import std.stdio;
import std.range;
import std.array;
import std.string;
import std.conv;
import std.typecons;
import std.algorithm;
import std.container;
import std.typecons;
import std.random;
import core.time;

void main()
{
	int a = readln.chomp.to!int;
	int dh = a / 100;
	int dm = (a % 100) * 60 / 100;
	writefln("%2d:%02d", 10 + dh, dm);
}