my code is getting wa in last 3 test case,
can u please help me out
exactly what I m doing wrong
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n,m,x,y;
cin>>n>>m>>x>>y;
int i=0,j=n,ans;
while(i<=j)
{
int mid=(i+j)/2;
int totalcoupons=m+(n-mid)*y;
int totalcouponsrequire=mid*x;
int flag=0;
if(totalcoupons>=totalcouponsrequire)
flag++;
if(flag)
{
//can be possible aage bhi check kr skte hai
i=mid+1;
ans=mid;
}
else
{
//more coupon need less student get scholarship
j=mid-1;
}
}
cout<<ans<<endl;
}