Untitled

#include <iostream>
#include <string>
#include <math.h>
#include <fstream>
using namespace std;
float aaaa(int a, int b, int c) {
    return ((a * b) * c) / 3.0;
};
int main()
{
    int a, b, c;
    float V;
    ifstream jija("input.txt");
    jija >> a >> b >> c;
    V = aaaa(a, b, c);
    cout << V;
    

}