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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     ios::sync_with_stdio(false);
  6.     cin.tie(nullptr);
  7.  
  8.     int t;
  9.     cin >> t;
  10.     while (t--) {
  11.         long long s, k, m;
  12.         cin >> s >> k >> m;
  13.  
  14.         long long n = m / k;
  15.         long long r = m % k;
  16.  
  17.         long long A;
  18.         if (s <= k) {
  19.             A = s;
  20.         } else {
  21.             if (n % 2== 0) {
  22.               A = s;
  23.             } else {
  24.               A = k;
  25.             }
  26.         }
  27.  
  28.         long long ans = A - r;
  29.         if (ans < 0) ans = 0;
  30.         cout << ans << endl;
  31.     }
  32. }
Success #stdin #stdout 0.06s 5300KB
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https://ideone.com/9f55BX
language:
C++ (gcc 8.3)
created:
11 hours ago
visibility:
public

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