#include <iostream>
#include <cstdio>
#include <bitset>
#include <queue>
#include <stack>
#include <vector>
#include <list>
#include <set>
#include <map>
#include <utility>
#include <string>
#include <algorithm>
#include <cmath>
#include <limits>

using namespace std;
using ll=long long;
using vint=vector<int>;
using pint=pair<int,int>;

const double EPS = 1e-9;
const int inf = numeric_limits<int>::max();

#define rep(i,n) for(int i=0;i<int(n);++i)
#define REP(i,a,b) for(int i=int(a);i<int(b);++i)
#define SHOW(a) cout << #a << " = " << a << endl
#define ARR(a,i,n) for(int i=0;i<int(n);++i) cout << #a << "[" << i << "]" << " = " << a[i] << endl

void solve(){
	int n, hh = 10, mm = 0;
	cin >> n;
	double t = n / 100.0;
	hh += floor(t);
	mm = round(60 * (t - floor(t)));
	printf("%02d:%02d\n", hh, mm);
}

int main(){
	solve();
	return 0;
}