1 #include<stdio.h>
 2 #include<string.h>
 3 #include<algorithm>
 4 using namespace std;
 5 #define inf 1044266558
 6 typedef struct Point
 7 {
 8     int x, y;
 9     Point operator - ( const Point &b ) const
10     {
11         Point c;
12         c.x = x-b.x; c.y = y-b.y;
13         return c;
14     }
15     double operator * ( const Point &b ) const
16     {
17         return x*b.y-y*b.x;
18     }
19 }Point;
20 Point h[505], s[505];
21 int n, m, ans, road[505][505];
22 bool Jud(Point x, Point y, Point z)
23 {
24     if((x.x<z.x && y.x<z.x) || (x.y<z.y && y.y<z.y) || (x.x>z.x && y.x>z.x) || (x.y>z.y && y.y>z.y))
25         return 1;
26     return 0;
27 }
28 int main(void)
29 {
30     int i, j, k, flag;
31     while(scanf("%d", &n)!=EOF)
32     {
33         memset(road, 62, sizeof(road));
34         for(i=1;i<=n;i++)
35             scanf("%d%d", &h[i].x, &h[i].y);
36         scanf("%d", &m);
37         for(i=1;i<=m;i++)
38             scanf("%d%d", &s[i].x, &s[i].y);
39         for(i=1;i<=m;i++)
40         {
41             for(j=1;j<=m;j++)
42             {
43                 flag = 1;
44                 for(k=1;k<=n;k++)
45                 {
46                     if((s[i]-s[j])*(s[i]-h[k])<0 || (s[i]-s[j])*(s[i]-h[k])==0 && Jud(s[i], s[j], h[k]))
47                     {
48                         flag = 0;
49                         break;
50                     }
51                 }
52                 if(flag)
53                     road[i][j] = 1;
54             }
55         }
56         ans = inf;
57         for(k=1;k<=m;k++)
58         {
59             for(i=1;i<=m;i++)
60             {
61                 if(road[i][k]==inf)
62                     continue;
63                 for(j=1;j<=m;j++)
64                     road[i][j] = min(road[i][j], road[i][k]+road[k][j]);
65             }
66         }
67         for(i=1;i<=m;i++)
68             ans = min(ans, road[i][i]);
69         if(ans>m)
70             printf("ToT\n");
71         else
72             printf("%d\n", m-ans);
73     }
74     return 0;    
75 }

  1 #include <bits/stdc++.h>
  2 using namespace std;
  3 typedef long long ll;
  4 #define max(a,b) (a)>(b)?(a):(b);
  5 #define min(a,b) (a)>(b)?(b):(a);
  6 inline ll read()//读入优化
  7 {
  8     ll x=0,f=1;//f表示符号,x表示首位数字0
  9     char ch=getchar();
 10     while(ch<'0'||ch>'9')//如果ch不是数字
 11     {
 12         if(ch=='-')//如果是符号就改变符号
 13             f=-1;
 14         ch=getchar();
 15     }
 16     while(ch>='0'&&ch<='9')//如果ch是数字,接下来的每位数字
 17     {
 18         x=x*10+ch-'0';//将数字添加进x内
 19         ch=getchar();
 20     }
 21     return x*f;//返回数值
 22 }
 23 inline void write(ll x)//输出优化
 24 {
 25     if(x<0)//判断小于0的情况
 26     {
 27         putchar('-');
 28         x=-x;
 29     }
 30     if(x>9)//保存每一位
 31     {
 32         write(x/10);
 33     }
 34     putchar(x%10+'0');//输出
 35 }
 36 inline ll gcd(ll a,ll b)
 37 {
 38     return b==0?a:gcd(b,a%b);
 39 }
 40 const ll INF=1ll<<60;
 41 const ll inf=-1ll<<60;
 42 const ll N=4444;
 43 ll pre[N];
 44 bool t[N];//t 用于标记独立块的根结点
 45 inline ll find(ll x)//查找根节点
 46 {
 47     ll r=x;
 48     while(pre[r]!=r)
 49         r=pre[r];//返回根节点 r
 50         int i=x,j;
 51         while(pre[i]!=r)//路径压缩
 52         {
 53             j=pre[i]; // 在改变上级之前用临时变量  j 记录下他的值
 54             pre[i]=r;//把上级改为根节点
 55             i=j;
 56         }
 57     return r;
 58 }
 59 inline void join(ll x,ll y)//判断x y是否连通，
 60 {
 61     ll fx=find(x),fy=find(y);
 62     if(fx!=fy)
 63         pre[fy]=fx;//如果已经连通，就不用管了 //如果不连通，就把它们所在的连通分支合并起来
 64 }
 65 ll n,m;
 66 ll num[N];
 67 int main()
 68 {
 69     while(scanf("%lld%lld",&n,&m)!=EOF)
 70     {
 71         /*
 72         for(i=1;i<=N;i++)
 73             pre[i]=i;//初始化
 74         for(i=1;i<=M;i++)
 75         {
 76             scanf("%d%d",&a,&b);
 77             join(a,b);//判断x y是否连通
 78         }
 79         memset(t,0,sizeof(t));
 80         for(i=1;i<=N;i++)
 81             t[find(i)]=1;//标记根结点
 82         for(ans=0,i=1;i<=N;i++)
 83             if(t[i])
 84             ans++;
 85         printf("%d\n",ans-1);
 86         */
 87         for(ll i=1;i<=n;++i)
 88         {
 89             pre[i]=i;
 90         }
 91         memset(num,false,sizeof(num));
 92         ll cnt=0;
 93         for(ll i=0;i<m;++i)
 94         {
 95             ll x,y,z;
 96             x=read();
 97             y=read();
 98             z=read();
 99             if(x==y)
100                 continue;
101             num[y]+=z;
102             num[x]+=z;
103             if(find(x)!=find(y))
104             {
105                 pre[find(x)]=find(y);
106                 ++cnt;
107             }
108         }
109         if(cnt!=n-1)
110         {
111             printf("0\n");
112             continue;
113         }
114         ll ans=num[1];
115         for(ll i=2;i<=n;i++)
116             ans=min(ans,num[i]);
117         write(ans);
118         printf("\n");
119     }
120     return 0;
121 }

 1 #include <bits/stdc++.h>
 2 #include <stdio.h>
 3 using namespace std;
 4 typedef __int64 ll;
 5 #define max(a,b) (a)>(b)?(a):(b);
 6 #define min(a,b) (a)>(b)?(b):(a);
 7 inline ll read()//读入优化
 8 {
 9     ll x=0,f=1;//f表示符号,x表示首位数字0
10     char ch=getchar();
11     while(ch<'0'||ch>'9')//如果ch不是数字
12     {
13         if(ch=='-')//如果是符号就改变符号
14             f=-1;
15         ch=getchar();
16     }
17     while(ch>='0'&&ch<='9')//如果ch是数字,接下来的每位数字
18     {
19         x=x*10+ch-'0';//将数字添加进x内
20         ch=getchar();
21     }
22     return x*f;//返回数值
23 }
24 inline void write(ll x)//输出优化
25 {
26     if(x<0)//判断小于0的情况
27     {
28         putchar('-');
29         x=-x;
30     }
31     if(x>9)//保存每一位
32     {
33         write(x/10);
34     }
35     putchar(x%10+'0');//输出
36 }
37 inline ll gcd(ll a,ll b)
38 {
39     return b==0?a:gcd(b,a%b);
40 }
41 const int N=100010;
42 const ll INF=1ll<<60;
43 const ll inf=-1ll<<60;
44 ll w[N],v[N];
45 ll x[N],y[N];
46 ll dp[20][N];
47 ll n,m;
48 int main()
49 {
50     while(scanf("%I64d%I64d",&n,&m)!=EOF)
51     {
52         for(ll i=1;i<=n;i++)
53             w[i]=read(),v[i]=read();
54         for(ll i=1;i<=m;i++)
55             x[i]=read(),y[i]=read();
56         for(ll i=0;i<=15;i++)
57         {
58             dp[i][0]=0;
59             for(ll j=1;j<=1010;j++)
60                 dp[i][j]=INF;
61             for(ll j=1;j<=m;j++)
62             {
63                 if(y[j]<=i)
64                     continue;
65                 for(ll k=1;k<=1010;k++)
66                 {
67                     ll q=max(k-y[j]+i,0);
68                     dp[i][k]=min(dp[i][k],dp[i][q]+x[j]);
69                 }
70             }
71         }
72         ll ans=0;
73         for(ll i=1;i<=n;i++)
74         {
75             if(dp[v[i]][w[i]]==INF)
76             {
77                 ans=-1;
78                 break;
79             }
80             ans+=dp[v[i]][w[i]];
81         }
82         write(ans);
83         printf("\n");
84         //cout<<ans<<endl;
85         //printf("%I64d\n",ans);
86     }
87     return 0;
88 }

  1 #include <stdio.h>
  2 #include <string.h>
  3 #include <bits/stdc++.h>
  4 using namespace std;
  5 typedef long long ll;
  6 #define max(a,b) (a)>(b)?(a):(b);
  7 #define min(a,b) (a)>(b)?(b):(a);
  8 inline ll read()//读入优化
  9 {
 10     ll x=0,f=1;//f表示符号,x表示首位数字0
 11     char ch=getchar();
 12     while(ch<'0'||ch>'9')//如果ch不是数字
 13     {
 14         if(ch=='-')//如果是符号就改变符号
 15             f=-1;
 16         ch=getchar();
 17     }
 18     while(ch>='0'&&ch<='9')//如果ch是数字,接下来的每位数字
 19     {
 20         x=x*10+ch-'0';//将数字添加进x内
 21         ch=getchar();
 22     }
 23     return x*f;//返回数值
 24 }
 25 inline void write(ll x)//输出优化
 26 {
 27     if(x<0)//判断小于0的情况
 28     {
 29         putchar('-');
 30         x=-x;
 31     }
 32     if(x>9)//保存每一位
 33     {
 34         write(x/10);
 35     }
 36     putchar(x%10+'0');//输出
 37 }
 38 inline ll gcd(ll a,ll b)
 39 {
 40     return b==0?a:gcd(b,a%b);
 41 }
 42 const ll INF=1ll<<60;
 43 const ll inf=-1ll<<60;
 44 const ll N=1510;
 45 ll w[N],v[N];
 46 ll u[N];
 47 ll dp[N][N];
 48 bool vis[N][N];
 49 //-------------------------------------------
 50 inline ll solve(ll x,ll y)
 51 {
 52     ll pp=dp[x][0];
 53     ll qq=dp[y][0];
 54     for(ll p=1,q=1;p<=pp&&q<=qq;++p,++q)
 55     {
 56         if(dp[pp][p]!=dp[qq][q])
 57             return dp[pp][p]-dp[qq][q];
 58     }
 59     return 0;
 60 }
 61 //-------------------------------------------
 62 ll T,n,m;
 63 int main()
 64 {
 65     while(scanf("%lld",&T)!=EOF)
 66     {
 67     //T=read();
 68         for(ll i=1;i<=T;++i)
 69         {
 70             m=read();
 71             n=read();
 72             memset(u,false,sizeof(u));
 73             memset(vis,false,sizeof(vis));
 74             memset(dp,false,sizeof(dp));
 75             memset(v,false,sizeof(v));
 76             memset(w,false,sizeof(w));
 77             for(ll j=1;j<=n;++j)
 78             {
 79                 v[j]=read();
 80                 w[j]=read();
 81             }
 82             printf("Case #%lld:\n",i);
 83             for(ll j=1;j<=n;++j)
 84             {
 85                 for(ll k=m;k>=w[j];--k)
 86                 {
 87                     //ll a=u[k];
 88                     //u[k]=max(u[k],u[k-w[j]]+v[j]);
 89                     //if(a!=u[k])
 90                        //vis[j][k]=1;
 91                     if(u[k]<u[k-w[j]]+v[j])
 92                     {
 93                         u[k]=u[k-w[j]]+v[j];
 94                         vis[j][k]=true;
 95                     }
 96                 }
 97             }
 98             //
 99             ll maxn=0;
100             for(ll j=0;j<=m;++j)
101                 maxn=max(maxn,u[j]);
102             //
103             ll sum=INF;
104             ll x=0,num=0;
105             for(ll j=m;j>=0;--j)
106             {
107                 if(u[j]==maxn)
108                 {
109                     ll sumsum=0;
110                     ll pre=1;
111                     ll xx=n,yy=j;
112                     while(xx>=1&&yy>=0)
113                     {
114                         if(vis[xx][yy])
115                         {
116                             dp[x][pre++]=xx;
117                             //pre++;
118                             sumsum+=xx;
119                             yy-=w[xx];
120                         }
121                         xx--;
122                     }
123                     dp[x][0]=pre-1;
124                     sort(dp[x]+1,dp[x]+1+dp[x][0]);
125                     if(sum>sumsum)
126                     {
127                         sum=sumsum;
128                         num=x;
129                     }
130                     else if(sum==sumsum&&solve(x,num)<0)
131                     {
132                         sum=sumsum;
133                         num=x;
134                     }
135                     x++;
136                 }
137             }
138             ///
139             ll val=0,cost=0;
140             ll top=dp[num][0];
141             sort(dp[num]+1,dp[num]+1+dp[num][0]);
142             for(ll a=1;a<=top;++a)
143             {
144                 val+=v[dp[num][a]];
145                 cost+=w[dp[num][a]];
146             }
147             //printf("Case #%lld:\n",i);
148             printf("%lld %lld\n",val,cost);
149             for(ll a=1;a<top;++a)
150                 printf("%lld ",dp[num][a]);
151             if(top>=1)
152                 printf("%lld\n",dp[num][top]);
153         }
154     }
155     return 0;
156 }

  1 #include <bits/stdc++.h>
  2 using namespace std;
  3 typedef long long ll;
  4 const ll N=1000010;
  5 #define max(a,b) (a)>(b)?(a):(b);
  6 #define min(a,b) (a)>(b)?(b):(a);
  7 inline ll read()//读入优化
  8 {
  9     ll x=0,f=1;//f表示符号,x表示首位数字0
 10     char ch=getchar();
 11     while(ch<'0'||ch>'9')//如果ch不是数字
 12     {
 13         if(ch=='-')//如果是符号就改变符号
 14             f=-1;
 15         ch=getchar();
 16     }
 17     while(ch>='0'&&ch<='9')//如果ch是数字,接下来的每位数字
 18     {
 19         x=x*10+ch-'0';//将数字添加进x内
 20         ch=getchar();
 21     }
 22     return x*f;//返回数值
 23 }
 24 inline void write(ll x)//输出优化
 25 {
 26     if(x<0)//判断小于0的情况
 27     {
 28         putchar('-');
 29         x=-x;
 30     }
 31     if(x>9)//保存每一位
 32     {
 33         write(x/10);
 34     }
 35     putchar(x%10+'0');//输出
 36 }
 37 ll pre[N];
 38 bool t[N];//t 用于标记独立块的根结点
 39 inline ll find(ll x)//查找根节点
 40 {
 41     ll r=x;
 42     while(pre[r]!=r)
 43         r=pre[r];//返回根节点 r
 44         int i=x,j;
 45         while(pre[i]!=r)//路径压缩
 46         {
 47             j=pre[i]; // 在改变上级之前用临时变量  j 记录下他的值
 48             pre[i]=r;//把上级改为根节点
 49             i=j;
 50         }
 51     return r;
 52 }
 53 inline void join(ll x,ll y)//判断x y是否连通，
 54 {
 55     ll fx=find(x),fy=find(y);
 56     if(fx!=fy)
 57         pre[fy]=fx;//如果已经连通，就不用管了 //如果不连通，就把它们所在的连通分支合并起来
 58 }
 59 const ll mod=1000000007;
 60 inline ll gcd(ll a,ll b)
 61 {
 62     return b==0?a:gcd(b,a%b);
 63 }
 64 inline ll qpow(ll x,ll p)
 65 {
 66     ll ret=1;
 67     for(;p;p>>=1,x=x*x%mod)
 68     {
 69         if(p&1)
 70         ret=ret*x%mod;
 71     }
 72     return ret;
 73 }
 74 const ll INF=1ll<<60;
 75 const ll inf=-1ll<<60;
 76 char str[N];
 77 ll s[N]=
 78 {
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 83     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 84     613098019,82701766,247051132,940988662,699855854,653160599,253589170,454574426,648632475,561229480,439013878,780463812,751080642,475363127,872955171,221419431,660718935,616253276,620991239,322955474,95900697,736953117,435364733,400032675,143150458,892976596,778936048,870114869,693427846,916920202,531290913,159313409,854027823,956895320,431001333,958032952,435621676,147281691,782644049,363417645,788629073,318986652,45280716,627497306,862125833,55176692,769605990,50913091,759547794,415399356,91873313,435971457,972361711,886131838,698360174,778537252,867612407,363143588,210628827,227452019,167347791,136481555,794414626,886837851,833212071,867100102,962413595,506550918,150461107,97396199,322574611,286566460,418048639,126619502,49890932,424873463,577636888,598651314,214771282,633007716,67600639,872694032,899190404,807799524,536389663,783650145,198103723,406176925,596091368,865801146,255660985,950263612,204698161,570789483,35674858,355559169,627978911,108585701,612463851,227550456,44549978,430769857,197325621,365494994,215296621,794175066,165486775,239680547,990696203,54536891,267132823,879937767,468746039,925979058,896931201,784849771,365504305,221529004,715124186,598394296,273404498,942530408,892470275,339529469,637182412,714030555,4591038,747727171,993858038,98351859,587568276,635308938,66381702,523069101,611647432,93089964,621299142,87170109,91184576,582205309,384761096,623784317,274148172,565367846,707139350,413965784,111585803,462251445,228866268,199084146,547319848,912054783,776081313,50512733,398666776,860515976,132645483,784732014,283636962,567053755,762371460,902545259,6795752,933181225,79095380,382697365,79944172,18195218,904541583,983398375,352534501,206544638,590062152,870793758,26235371,885333891,755593357,797697319,233605783,916638079,592465092,389607454,700420311,196459900,86420454,160839557,696575,569324134,807071644,759233878,743587997,984681992,941063338,324982757,676014860,600520498,188292161,129801562,413126752,313832643,937070759,97526604,541466777,603982189,77969188,347408805,311339522,716968535,967397279,253173933,37355703,352327793,883519616,967973262,117140785,240224335,807324871,845415681,840729498,935684923,155577573,734434833,191517923,654123163,637896624,852058670,173168370,730184794,50915735,324841114,628137110,205149114,182695122,548334792,230832142,246897375,673812822,774458235,12653594,589139188,823592104,141584849,661263989,634220976,838048410,865644208,959538649,496526723,706515642,30364288,288996675,618298630,512675413,255909709,961226649,196140093,464842799,73771491,907822468,820941783,633421126,938423057,725611016,889132555,244245553,600535214,454683334,918501588,156397960,727549083,462344797,552581171,951585647,331017637,713844297,201014346,220893764,942832265,205089583,855055766,558242708,467800323,544040124,5018684,600324086,275710404,942082597,882387855,283394592,984698042,699687145,218659340,671476043,786242938,615660310,451633451,264041371,62057607,615318684,358229710,600528374,737949511,309417464,928413938,485704507,508289212,335423875,674380863,518017044,336119074,617416674,485819110,941096637,929311054,597002446,973475334,265580872,563517784,251569149,148530184,95396816,883600979,282561244,840871566,519908445,640741041,421822961,632376045,139437876,790411904,591820303,741935921,948651905,366299783,716525381,15431695,15465625,971346451,168728596,608506519,27394837,851151360,602776233,970664278,322046939,511916124,340275737,1956214,363111458,481072216,658163046,518552634,132664065,981823198,216243081,159795020,767941105,457986980,858463537,976190745,171187323,572871813,647899578,408338249,44147207,156374207,940179853,58043446,28385650,424517633,511617049,926045094,319879729,514748429,614317869,421026423,671332980,6835612,938930076,458303594,925057217,380172144,417162197,8078854,424003560,2008065,807569105,429700641,464740805,457368858,589073747,394260986,391506131,929826825,432872648,690774587,357406694,692130031,273616783,445027156,511488576,31976171,170358186,20482390,918198464,271438684,749710986,389073776,939445726,23455846,956187346,748137028,734748051,303817400,94204386,126522637,81942995,832809073,197225686,406203721,149560387,711052519,501674175,547993890,871374386,551852029,842913905,11301805,658024191,322045818,938590456,235068927,986201888,729075821,230293940,88489051,430417352,457640653,512463037,164939381,78855727,918299124,19019884,318003658,964003586,887976673,465062825,998287188,345218097,418436509,423868376,737852682,222443100,431664080,191790675,179137865,240191988,426955600,372855698,834981397,769820197,12457840,592849249,301573725,529831284,455945822,908361093,348036200,725019234,272002918,302014486,868309988,267131588,110362906,658933926,714755636,575129133,572255614,242451399,460854477,379734453,261883330,173252303,205271891,875823576,295295415,344691305,88281196,291229175,339458347,199662270,135955543,945346312,464533492,871840955,247580453,899980261,309580183,86978522,845735069,219736536,817617603,405963484,880265007,291366034,314006019,8675350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 85 };
 86 ll T,n;
 87 int main()
 88 {
 89     ios::sync_with_stdio(false);
 90     T=read();
 91     while(T--)
 92     {
 93         scanf("%d%s",&n,&str);
 94         ll len=strlen(str);
 95         if(len>n||n&1)
 96         {
 97             printf("0\n");
 98             continue;
 99         }
100         ll pp=(n-len)/2+1;
101         ll x=pp/100000;
102         ll ans=s[x];
103         for(ll i=x*100000+1;i<=pp;++i)
104             ans=(ans*2*(i*2-1)%mod*qpow(i+1,mod-2)%mod)%mod;
105         ans=(ans*(pp+1)%mod*qpow(2,mod-2)%mod)%mod;
106         write(ans);
107         printf("\n");
108     }
109     return 0;
110 }