My Cpp template for olympiads

main.cpp

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

typedef long long ll;
typedef unsigned long long ull;

using namespace std;

constexpr int MAXN = 1000;
constexpr int INF = 2*1000*1000*1000;
int n, m, k;

int main(int argc, char[] *argv)
{
	//ios::sync_with_stdio(false);
	//cin.tie(0);
	//freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
  return 0;
}