dovelet - 블럭 색칠하기/paintblock

dovelet - 블럭 색칠하기/paintblock

문제

#include <iostream>
 
using namespace std;
 
int main()
{
    int x, y, z;
    cin >> x >> y >> z;
    cout << ((x - 2) * 4) + ((y - 2) * 4)  + ((z - 2) * 4) << endl;
 
    return 0;
}