include[HTML_REMOVED]

int main()
{
int N,a=0,b=0,x,y=0;
scanf(“%d”,&N);
x=N;
if(N>=3600)
{
a=N/3600;
x=N%3600;
}
if(x>=60)
{
b=x/60;
y=x%60;
}
printf(“%d:%d:%d\n”,a,b,y);
return 0;
}