Problem Link : CodeChef: Practical coding for everyone
Here is the code:
#include <bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD 1000000007
int main()
{
ll test;
cin >> test;
while (test--)
{
ll a, b, c;
cin >> a >> b >> c;
ll k = (c - b) / a;
cout << a * k + b << endl;
}
return 0;
}