#include <iostream>
using namespace std;

int main() {
    float a, b, c;

    for (int i = 1; i < 30; ++i) {
        cout << "Digite as notas: " << endl;
        cin >> a >> b >> c;
       cout << "Media do aluno e de: "<< (a + b + c)/3 << endl;
    }

    return 0;
}