int solve(int a, int b){
    char sa[100]={'\0'}, sb[100]={'\0'};
    sprintf(sa, "%d", a);
    sprintf(sb, "%d", b);
    int na=strlen(sa), nb=strlen(sb);
    if(na==nb){
        return strcmp(sa, sb);
    }else{
        return solve(na, nb);
    }
}
int main()
{
    char c1='0'+12, c2='0'+14;
    int n; scanf("%d", &n);
    while(n){
        n--;
        int a, b; scanf("%d %d", &a, &b);
        int cmp=solve(a, b);
        if(cmp==0){
            printf("=\n");
            continue;
        }
        char s[100]={'\0'};
        sprintf(s, "%d", cmp);
        if(s[0]=='-') printf("%c\n", c1);
        else printf("%c\n", c2);
    }
    return 0;
}