#include <stdlib.h>
#include <math.h>


int main(){
 double inf = (double) 1/(double) 0;
 printf("%lf\n%lf\n\n", inf/(double) 1, inf/(double)0);
 printf("%lf\n%lf\n\n",(double) 1/ inf, (double) 0/ inf);
 return 0;
}

inf
inf

0.000000
0.000000