#include "stdio.h"

int main()
{
    int n;
    scanf("%d", &n);

    for(int i=0; i!=n; ++i){
        int a, b;
        scanf("%d %d", &a, &b);

        int x = a - b;
        char c;
        if(!x)
            c = '=';
        else if(x & 0x80000000)
            c = 60;
        else
            c = 62;
        printf("%c\n", c);
    }

    return 0;
}