#include <stdio.h> #include<string.h> #include<math.h> int main(int argc, char *argv[]) { int a ,b, c; double p,s; while(scanf("%d %d %d",&a,&b,&c)!=EOF){ p=(double)(a+b+c)/2; s=sqrt(p*(p-a)*(p-b)*(p-c)); printf("%.2lf",s); } return 0; } |
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