Codeforces Round 858 (Div. 2) 1806A - Walking Master Solution

 

Problem Link : https://codeforces.com/contest/1806/problem/A

Solution in C++:

1. /// La ilaha illellahu muhammadur rasulullah
2. ///******Bismillahir-Rahmanir-Rahim******///
3. /// Abul Hasnat Tonmoy
4. /// Department of CSE,23rd batch
5. /// Islamic University,Bangladesh
6. ///**********ALLAH IS ALMIGHTY************///
7. #include <bits/stdc++.h>
8. using namespace std ;
9. int32_t main() {
10. ios_base::sync_with_stdio(0);
11. cin.tie(0);
12. int test ;
13. cin >> test ;
14. while ( test-- ){
15. int a , b , c , d ;
16. cin >> a >> b >> c >> d ;
17. int v ;
18. v = a + d - b ;
19. if ( v < c ) {
20. cout <<"-1"<<endl;
21. continue ;
22. }
23. if ( d < b ) {
24. cout <<"-1"<<endl;
25. continue ;
26. }
28. cout << (d-b) + abs(v -c ) <<endl;
29. }
30. return 0 ;
31. }