题解 | 约瑟夫环

#include <cmath>
#include <iomanip>
#include <iostream>
#include <vector>
using namespace std;

int main()
{
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);

    int n, k, m;
    cin >> n >> k >> m;

    int ans = 0;
    for (int i = 2;i <= n;i++)
    {
        ans = (ans + m) % i;
    }

    ans = (ans + k) % n;

    if (ans == 0) ans = n;
    cout << ans << '\n';
}