01. Sum Matrix Columns

#include <iostream>
#include <vector>

using namespace std;

int main() {
    int row, col, el;
    cin >> row >> col;

    vector<vector<int>> matrix;

    for (int i = 0; i < row; i++) {
        vector<int> currentRow;
        for (int j = 0; j < col; j++) {
            cin >> el;
            currentRow.push_back(el);
        }
        matrix.push_back(currentRow);
    }

    for (int i = 0; i < col; i++) {
        int sum = 0;
        for (int j = 0; j < row; j++) {
            sum += matrix[j][i];
        }
        cout << sum << endl;
    }

    return 0;
}