#include <bits/stdc++.h>

using namespace std;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, m; cin >> n >> m;
    string s; cin >> s;
    assert(3 <= n && n <= 100000);
    assert(0 <= m && m <= n);
    
    assert((int) s.size() == n);
}