Showing wrong answer even if my output is same as in the problem

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my code- #include
#include
using namespace std;
int main()
{ int n;
cin>>n;
int p1[n],p2[n],l1[n],l2[n];
int a=0,b=0, sum1=0,sum2=0;
for(int i=0;i<n;i++){
cin>>p1[i]>>p2[i];
if(p1[i]>p2[i]){
l1[a]=p1[i]-p2[i];
a++;
}
else
l2[b]=p2[i]-p1[i];
b++;
}
sort(l1,l1+a);
sort(l2,l2+b-1);
if(l1[a-1]>l2[b-1]){
cout<<“1”;
cout<<" “<<l1[a-1];
}
else {
cout<<“2”;
cout<<” "<<l2[b-1];
}
return 0;
}

sort(l2,l2+b-1);
I think it should be changed to
sort(l2,l2+b);