#include <bits/stdc++.h>

using namespace std;

int main() {
  int t;
  cin >> t;
  while (t--) {
    int a, b, c;
    cin >> a >> b >> c;
    int ans = 0;
    for (int i = 1; i <= min(a, b); ++i) {
      int fixed = min(a, b) - i;
      int o = max(a, b) - i;
      if (a + b - fixed == c) {
        ans = fixed;
      }
    }
    cout << ans << '\n';
  }
	return 0;
}