#include <bits/stdc++.h>   using namespace std;   void solve() {     int x, y, n;     cin >> x >> y >> n;     int max = (n / x) * x;     if (max + y > n) {       max = max - x + y;     } else {       max += y;     }     cout << max <<   n ;   }   int main() {     int t;     cin >> t;     while (t--) solve();     return 0;   }   