#include#include int main(void) { int a,b,c; float d; double e,S; scanf("%d %d %d",&a,&b,&c); d = (a + b + c) * 0.5; e = d*(d-a)*(d-b)*(d-c); S = sqrt(e); printf("%.3fn",S); return 0; }
#include#include int main(void) { int a,b,c; float d; double e,S; scanf("%d %d %d",&a,&b,&c); d = (a + b + c) * 0.5; e = d*(d-a)*(d-b)*(d-c); S = sqrt(e); printf("%.3fn",S); return 0; }
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