Hypyt

input/code.cpp: In function 'int main()':
input/code.cpp:13:41: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   13 |                 while(xa < xb || xa==xb && ya<yb) {
      |                                  ~~~~~~~^~~~~~~~

#include <iostream>
using namespace std;
int main() {
	int t;cin>>t;
	while(t--){
		int h,w;cin>>h>>w;
		bool sw=0;
		if (w<h) sw=1,swap(w,h);
		auto out = [sw](int a, int b){if(sw)swap(a,b);cout<<a<<' '<<b<<'\n';};
		int xa=0, xb=w-1;
		int ya=0, yb=h-1;
		bool right=1;
		while(xa < xb || xa==xb && ya<yb) {
			if (right) {
				out(yb-ya, xb-xa);
				if (++ya>=h) {
					++xa;
					ya = 0;
				}
			} else {
				out(ya-yb, xa-xb);
				if (--yb<0) {
					--xb;
					yb = h-1;
				}
			}
			right = !right;
		}
	}
}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 2

Verdict: ACCEPTED

Test 4

Group: 2

Verdict: ACCEPTED

Test 5

Group: 2

Verdict: ACCEPTED