201712-2 游戏

#include <iostream>
#include <algorithm>
#include <queue>
using namespace std;
int main()
{
    int n, k;
    cin >> n >> k;
    queue<int> q;
    for (int i = 1; i <= n; i ++ ) q.push(i);
    int j = 1;
    while (q.size() > 1)
    {
        int t = q.front();
        q.pop();
        if (j % k && j % 10 != k) q.push(t);
        j ++ ;
    }
    cout << q.front() << endl;
    return 0;
}