Codeforces 1256A - Payment Without Change Solution

 Solution in C++:

 ///La ilaha illellahu muhammadur rasulullah

///******Bismillahir-Rahmanir-Rahim******///

///AH Tonmoy

///Department of CSE,23rd batch

///Islamic University,Bangladesh

1. #include <bits/stdc++.h>
2. using namespace std;
3. int main()
4. {
5. long long n,a,b,s,t;
6. cin>>t;
7. while(t--)
8. {
9. cin>>a>>b>>n>>s;
10. if((((a*n)+b)>=s)&&(s%n<=b))
11. cout<<"YES"<<endl;
12. else
13. cout<<"NO"<<endl;
14. }
15.  
16. }