#include #define FOR(i,a,b) for(int i = (a); i < (b); ++i) #define REP(i,n) FOR(i,0,n) #define RREP(i,n) for(int i = (n) - 1; (i) >= 0; --i) #define SZ(n) (int)(n).size() #define ALL(n) (n).begin(), (n).end() #define MOD LL(1e9 + 7) #define INF 1000000 using namespace std; typedef long long LL; typedef vector VI; typedef pair PI; int main() { int a; cin >> a; int h = 10 + a / 100; string m = to_string((h % 100) * 60 / 100); if (m.size() == 1) { m.insert(0, "0"); } cout << h << ":" << m << endl; return 0; }