#include <iostream>
using namespace std;
int main() {
    int array[3][3];
    for (int i = 0; i < 3; i++)
        for (int j = 0; j < 3; j++)
            array[i][j] = i * 10 + j;
    int sum;
    for (int i = 0; i < 3; i++)
        sum += array[i][i];
    cout << sum << endl;
    return 0;
}