Ответ:
#include <bits/stdc++.h>
using namespace std;
int main() {
float a, b, c, r;
cin >> a >> b >> c;
cout << (a*b)/(a+b+c) << "\n";
}
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Answers & Comments
Ответ:
#include <bits/stdc++.h>
using namespace std;
int main() {
float a, b, c, r;
cin >> a >> b >> c;
cout << (a*b)/(a+b+c) << "\n";
}