Help me in solving COLGLF2 problem

help
,
1

My issue

I am subtracting the intro length from ep2 to last ep and adding the duration . Still can’t figure out what’s wrong

My code

#include <bits/stdc++.h>
using namespace std;

int main() {
	// your code goes here
	
	int t;
	cin>>t;
	
	while(t--){
	  int s;
	  cin>>s;
	  int dur=0;
	  
	  vector<int> intro(s);
	  for(int i=0 ; i<s ;i++){
	    cin>>intro[i];
	  }
	  
	 
	  for(int i=0 ;i<s ; i++){
	    
	    int a;
	    cin>>a;
	    
	    for(int j=0;j<a;j++){
	      int p;
	      cin>>p;
	      if(j==0){
	        dur+=p;
	      }
	      else{
	        dur+= p - intro[i];

	      }
	    
	   }
	 }
	  
	  cout<<dur<<endl;
	}
	return 0;
}

Learning course: Level up from 1* to 2*
Problem Link: CodeChef: Practical coding for everyone

2

@yashjoshi6787
Use long long int instead of int .

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