#8592: (C語言) 打法參考


ssssxxxx994422 (LoS-Light)


#include <stdio.h>
int main(){
int s,a,b,c;
scanf("%d%d%d", &a,&b,&c);
s=(a+b+c)/2;
printf("%d\n", (s*(s-a)*(s-b)*(s-c)));
return 0;
}