A. Polycarp and Coins

Submit code:

void solve() {
    int n;
    cin >> n;
    int a, b;
    if(n == 1) {
        a = 1;
        b = 0;
    }
    else if(n % 3 == 0) {
        b = n / 3;
        a = n - (2 * b);
    }
    else if(n % 3 == 1) {
        b = n / 3;
        a = n - (2 * b);
    }
    else {
        b = n / 3 + 1;
        a = n - (2 * b);
    }
    cout << a << ' ' << b << endl;
}

int main() {
    int n;
    cin >> n;
    while (n --) {
        solve();
    }
    return 0;
}

better answer:

void mainA() {
    int n;
    cin >> n;
    int t = n % 3;
    cout << n / 3 + (t == 1) << " " << n / 3 + (t == 2) << "\n";
}

int main() {
    int n;
    cin >> n;
    while(n --) mainA();
    return 0;
}

B1. Wonderful Coloring — 1