Not getting right output

#1

not getting right output please tell me the flaw in my code

#include
#include
#include

using namespace std;

bool compare(pair<int,int>p1,pair<int,int>p2)
{
return p1.second<p2.second;
}

int main ()
{
int t;
cin>>t;
while(t–)
{
int n,start,end,i,j,count=1;
cin>>n;
vector<pair<int,int >>v(n);

    for(i=0;i<n;i++)
    {
        cin>>start>>end;
        v[i]=make_pair(start,end);
    }

    sort(v.begin(),v.end(),compare);

    for(i=0;i<n;i++)
    {
        for(j=i+1;j<n;j++)
        {
            if(v[i].second<=v[j].first)
            {
                count++;
                i=j;
                break;
            }
        }
    }
    cout<<count;

}
return 0;

}

#2

hello @shivamgoel150
add these two changes in ur code.
image

i=j-1.
becuase i++ will make it equal to j.