deepSum.cpp

#include <iostream>

using namespace std;

int deepSumCol(int data[3][3], int n, int m){
    if (n == 1)
        return data[m][0];
    else
        return deepSumCol(data, n-1, m) + data[m][n - 1];
}

int deepSum(int data[3][3], int n, int m){
    if(n == 1)
        return deepSumCol(data, m, 0);
    else
        return deepSum(data, n -1, m) + deepSumCol(data, m, n - 1);
}

int main(){
    int a[3][3] = {
        {1, 2, 3},
        {1, 2, 3},
        {1, 2, 3}
    };

    cout << deepSum(a, 3, 3) << endl;


    return 0;
}