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

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

        char c = 61;
        int x = b - a;
        if (x) {
            c = 60;
            if (x & 0x80000000) c = 62;
        }
        printf("%c\n", c);
    }

    return 0;
}