문제
풀이
#include <iostream>
using namespace std;
void solve(void) {
int n, k; cin >> n >> k;
int ans = 1-n;
while (ans < 0) ans += k-1;
cout << ans << "\n";
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int z; cin >> z;
while (z--) solve();
return 0;
}