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