#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

int main(int argc, char **argv) {
	int T;
	scanf("%d", &T);
	while (T-- != 0) {
		int a, b, c, d;
		scanf("%d%d%d%d", &a, &b, &c, &d);
		int s1 = a + c;
		int s2 = b + d;
		if (s1 > s2 || (s1 == s2 && c > b))
			puts("1");
		else if (s2 > s1 || (s2 == s1 && b > c))
			puts("2");
		else
			puts("-1");
	}
	return 0;
}