Open Judge 2750 鸡兔同笼

 1 #include <bits/stdc++.h>
 2 using namespace std;
 3 int main()
 4 {
 5     int n;
 6     int m;
 7     int a,b;
 8     while(scanf("%d",&m)!=EOF)
 9     {
10             if(m%2!=0)
11             {
12                 a=0;
13                 b=0;
14             }
15             else
16             {
17                 a=m/4;
18                 a=(m-a*4)/2+a;
19                 b=m/2;
20             }
21             printf("%d %d\n",a,b);
22     }
23     return 0;
24 }