#include <iostream> using namespace std; int main(){ int T; cin >> T; while (T--){ int n,m; cin >> n >> m; int cnt = 0; for (int z = 0;z <= n && z*5<=m;++z){ int y = (m - n) - 4 * z; int x = n - y = z; if (x >= 0 && y >= 0){ cnt++; } } cout << cnt << endl; } return 0; }