#include <bits/stdc++.h>

using namespace std;

int main() {
    int ts, h, m, s;
    cout << "請輸入秒數: ";
    cin >> ts;
    h = ts / 60 / 60;
    m = ts / 60 % 60;
    s = ts % 60;
    cout << h << ":" << m << ":" << s << endl;
    printf("%d:%d:%d\n", h, m, s);
    printf("%2d:%2d:%2d\n", h, m, s);
    printf("%02d:%02d:%02d\n", h, m, s);
}