My Cpp template for competitive programing.

main.cpp

#include <bits/stdc++.h>

#define REP(i, x) REPI(i, 0, x)
#define REPI(i,a,b) for(int i=int(a);i<int(b);++i)
#define ALL(x) (x).begin(), (x).end()

typedef long long ll;
using namespace std;

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

  return 0;
}