Leet Code Daily 2024-07-20 - Find Valid Matrix Given Row and Column Sums

class Solution {
public:
    vector<vector<int>> restoreMatrix(vector<int>& rowSum,
                                      vector<int>& colSum) {
        const int n = rowSum.size(), m = colSum.size();
        auto ret = vector<vector<int>>(n, vector<int>(m, 0));
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                ret[i][j] = min(rowSum[i], colSum[j]);
                rowSum[i] -= ret[i][j];
                colSum[j] -= ret[i][j];
            }
        }
        return ret;
    }
};