#include<iostream>
#include<cstring>
using namespace std;

int main (){

  int n;
  cin>>n;
  int a ,b;
  char c;
  int initial, final,final2;
  string sent;
  for(int i = 0 ;i < n ;i++){

   cin>>a>>b>>c;



  }
  cin >> initial;
  cin>>


    return 0;}