#include"bits/stdc++.h"
using namespace std;
using ll=long long;
ll n;
ll two[34];
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    scanf("%lld",&n);
    ll t=33;
    two[0]=1;
    for(;t--;)two[33-t]=two[33-t-1]*2;
    for(;n--;)
    {
        ll a,b;
        scanf("%lld %lld",&a,&b);
        char ans='=';
        t=33;
        do
        {
            if((((a&two[t])!=0)^((b&two[t])!=0)))
            {
                if((a&two[t])!=0)ans++;
                if((b&two[t])!=0)ans--;
                break;
            }
            t--;
        }
        while(t!=0);
        printf("%c\n",ans);
    }
}