int square(int x) {
    int res;
    res = x * x;
    return res;
}
int div(int a, int b) {
    int aa = -a;
    int bb = 1 * b;
    return aa / bb;
}
int main() {
    int x;
    x = square(9);// 81
    e:goto e;
    x = div(-150, 10);// 15
    ef:goto ef;
    return x;
}