Chopsticks problem

1

#include
#include<bits/stdc++.h>
#include

using namespace std;

int choppair(vectorchopsticks,int n,int d)
{
int t= 0;
for(int i = 0;i<n;i++)
{
for(int j =0;j<n;j++)
{
if(abs(chopsticks[i]-chopsticks[j])<=2 && i !=j)
{

         t++;   
        }
    
    }

  return t ; 
}

}
int main()
{
int n,d,m;

cin>>n;
cin>>d;
vector<int>chop(n);
for(int i=0;i<n;i++)
{
    cin>>chop[i];
    
}
m = choppair(chop,n,d);
cout<<m;
return 0 ;

}

this is my code and i m getting a wrong anwer though even it was successfully executed for sample test case

2

first syntactical mistake, you wrote return statement in for loop.
second is logical mistake, you code will make pair of i and j wil also make a pair with j and i.

consider these three values to be in array 9 9 9 .
you code will pair each 9 to other 2 two nines and output would be 6. where it should have been 1.