def toStrDig(n, dig) :
    s = str(n)
    if len(s) < dig   :
        s = ('0' * (dig - len(s))) + s
    return s 
a = int(input())
x = a//100
y = int((a%100)/100 * 60)
print(str(x+10)+":"+toStrDig(y, 2))