#include <stdio.h>
struct jikan {
	int ji;
	int fun;
	int byou;
};

int main(void)
{
         struct jikan a,b,c;
	 int hour, min, sec;
         a.ji=14;a.fun=45;a.byou=30;
         b.ji=16;b.fun=15;b.byou=00;
         hour=b.ji-a.ji;min=b.fun-a.fun;sec=b.byou-a.byou;

         if(sec<0) sec+=60; min-=1;
         if(min<0) min+=60; hour-=1;
         c.ji=hour;c.fun=min;c.byou=sec;
	 printf("Elapsed time %d h. %d min. %d sec.\n", c.ji, c.fun, c.byou);
return 0;
}