#include <iostream>
#include <iomanip>
using namespace std;
int main() {
float A, B, C, MEDIA;
cin >> A >> B >> C;
MEDIA = ((A * 2) + (B * 3) + (C * 5)) / (2 + 3 + 5);
cout << fixed << setprecision(1);
cout << "MEDIA = " << MEDIA << endl;
return 0;
}
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