use proconio::input;
fn main(){
    input!{
        mut a:usize,
    }
    let mut b=10;
    
    b+=a/100;
    a%=100;
    let mut c=60*a/100;
    if c<10{
        print!("{}:0{}",b,c);
    } else {
    	print!("{}:{}",b,c);
    }
    
}