#include <iostream> using namespace std; int main( ){ int a,h,m,s; cin>>a; h=a/3600; m=(a-h3600)/60; s=(a-h3600)%60; printf("%02d:%02d:%02d",h,m,s); }

#include<iostream> using namespace std; int main(){ int t,h,m,s; cin>>t; h=t/3600; m=(t-h*3600)/60; s=t%60; printf("%02d:%02d:%02d",h,m,s); return 0; }

#include <iostream> using namespace std; int main( ){ int a,h,m,s; cin>>a; h=a/3600; m=(a-h3600)/60; s=(a-h3600)%60; printf("%02d:%02d:%02d",h,m,s); }

#include <iostream> using namespace std; int main( ){ int a,h,m,s; cin>>a; h=a/3600; m=(a-h3600)/60; s=(a-h3600)%60; printf("%02d:%02d:%02d",h,m,s); }

#include <iostream> using namespace std; int main(){ int hh,mm,ss,t; cin>>t; ss=t%60; mm=t/60%60; hh=t/60/60%24; printf("%02d:%02d:%02d",hh,mm,ss); return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int t; cin>>t; int h=t/3600; int m=t%3600/60; int s=t%3600%60; printf("%02d:%02d:%02d",h,m,s); return 0; }