#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);++i)
#define ALL(A) A.begin(), A.end()

using namespace std;

typedef long long ll;
int ab[100];

int main()
{
	memset(ab, 0, sizeof(ab));
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int N; scanf("%d", &N);
	vector<int> ab(N, 0);

	rep (i, N){
		int a, b; scanf("%d %d", &a, &b);
		ab[i] = a - b;

		if (ab[i] == 0){
			printf("=\n");
		}else
		if ((unsigned int)(ab[i] & 2147483648)){
			printf("%c\n",(char)(0x3c));
		}else{
			printf("%c\n",(char)(0x3e));
		} // end if
	} // end rep

	return 0;
}