cf template

main.cc

#include <cstdlib>
#include <cmath>
#include <ctime>
#include <algorithm>
#include <deque>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <string>
#include <set>
#include <unordered_map>
#include <unordered_set>
#include <vector>

using namespace std;

void solve(istream &in, ostream &out);

int main() {
    ios::sync_with_stdio(false);
    solve(cin, cout);
    return 0;
}

void solve(istream &in, ostream &out) {
}