#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;
typedef pair<int, int> P;

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int N; cin >> N;
	vector<int> ab(N, 0);

	rep (i, N){
		int a, b; cin >> a >> b;
		ab[i] = a - b;

		if (ab[i] == 0){
			cout << '=' << endl;
		}else
		if ((unsigned int)(ab[i] & (1<<31))){
			cout << (char)(0x3c) << endl;
		}else{
			cout << (char)(0x3e) << endl;
		} // end if
	} // end rep

	return 0;
}