Surya was used to wear a smartwatch when he was in the Treadmill and during Cycling.

 Surya was used to wear a smartwatch when he was in the Treadmill and during Cycling. 

#include <stdio.h>

int main()

{int sec,h,m,s;

scanf("%d",&sec);

h=sec/3600;

sec=sec-(h*3600);

m=sec/60;

s=sec-(m*60);

printf("%dH:%dM:%dS",h,m,s);

return 0;}