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OI-codes/Luogu/P1170/P1170.cpp

22 lines
365 B
C++

#include <bits/stdc++.h>
using namespace std;
int gcd(int a, int b) {
if (b == 0) {
return a;
}
return gcd(b, a % b);
}
int main() {
int t;
cin >> t;
while (t--) {
int ax, ay, bx, by;
cin >> ax >> ay >> bx >> by;
cout << (gcd(abs(ax - bx), abs(ay - by)) == 1 ? "no" : "yes") << endl;
}
return 0;
}