资源限制

内存限制：256.0MB   C/C++时间限制：1.0s   Java时间限制：3.0s   Python时间限制：5.0s

---

#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N = 1e5+10;
int n,m,t,d;
int a[2][N],b[N];
//string s; 
signed main(){
	cin>>n;
	m = 365*24*60*60*1000;
	int h,m,s;
	h = n/(60*60*1000)%24;
	if(h<10)cout<<"0"<<h<<":";
	else cout<<h<<":";
	n=n%(60*60*1000);
	m = n/(60*1000);
	if(m<10)cout<<"0"<<m<<":";
	else cout<<m<<":";
	n=n%(60*1000);
	s = n/(1000);
	if(s<10)cout<<"0"<<s<<endl;
	else cout<<s<<endl;

	return 0;
}