void assign_remainder(int& first, int& second) {
    if (first > second) {
        first %= second;
    }
    else {
        second %= first;
    }
}

void assign_remainder(int* first, int* second) {
    if (*first > *second) {
        *first = *first % *second;
    }
    else {
        *second = *second % *first;
    }
}

void round_1(float& ch) {
    if (int(ch * 10) % 10 >= 5) {
        ch = int(ch) + 1;
    }
    else {
        ch = int(ch);
    }
}

void round_1(float* ch) {
    if (int(*ch * 10) % 10 >= 5) {
        *ch = int(*ch) + 1;
    }
    else {
        *ch = int(*ch);
    }
}