P1.12 P34279 Add one second

#include <iostream>
using namespace std;


int main() {
    int h,m,s;
    cin >> h >> m >> s;
    s=s+1;
    if (s>=60) {m=m+1;s=0;}
    if (m>=60) {h=h+1;m=0;}
    if (h>=24) {h=0;}
    if (h<10) {cout << "0" << h << ":";}
    else {cout << h << ":";}
    if (m<10) {cout << "0" << m << ":";}
    else {cout << m << ":";}
    if (s<10) {cout << "0" << s;}
    else {cout << s;}
    cout << endl;
}