B.cpp

#pragma GCC optimize ("O3")

#include <bits/stdc++.h>
using namespace  std;
void debug_out() { cerr  << endl; }
#ifdef __APPLE__
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]: " << __VA_ARGS__, debug_out()
#else
#define debug(...) 42
#endif

#define sz(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
#define ins insert

const int maxn = 2e6 + 10;
const int md = 1e9 + 7;



int T;
string str;
int x, y, n, m;

void task() {
  for(int i=1;i<=n;++i){
                
  }             
  
  for (int i = 0; i < n;++i) {

  

                            
  
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  T = 1;
  while (T--){
    task();
    //cout <<"1" << endl;
  }

  return 0;
}