题解

#include <iostream>
#include <algorithm>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    
    int t;
    cin >> t;
    
    while (t--) {
        int x, y;
        cin >> x >> y;
        if (x > y) swap(x, y);
        
        bool possible = false;
        if ((x * y) % 2 != 0) {
            possible = false;
        }
        else if (x == 1) {
            possible = (y % 4 == 0);
        }
        else if (x == 2) {
            possible = (y >= 3) && ((y % 4 == 0) || (y % 3 == 0) || (y % 4 == 3));
        }
        else if (x == 3) {
            possible = (y % 2 == 0) && (y >= 2);
        }
        else if (x == 4) {
            possible = true;
        }
        else {
            possible = true;
        }
        
        cout << (possible ? "Yes" : "No") << '\n';
    }
    
    return 0;
}