OJ Board

#include<stdio.h>
#include<math.h>

void main(){
double a,b,c,r;
while(scanf("%lf %lf %lf",&a,&b,&c)){ r=(a+b+c)/2.0;
if(r)printf("The radius of the round table is: %.3lf\n",sqrt((r-a)*(r-b)*(r-c)/r));
else printf("The radius of the round table is: 0.000\n");}
}

#include<stdio.h>
int pr[26]={2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79, 83,89,97,101};
void factor(int c,int a[])
{ if(c==1)return ;
factor(c-1,a);
int i;
for( i=0;pr <=c;i++){
while(!(c%pr )){a ++;c=c/pr ;}}
}

void main()
{
int n,i ;
while(scanf("%d ",&n)&&n ...