73.cpp

class Solution {
public:
    void setZeroes(vector<vector<int>>& matrix) {
        int m = matrix.size();
        int n = matrix[0].size();
        vector<bool> rows(m, false);
        vector<bool> cols(n, false);
        for (int i = 0; i < m; ++i) {
            for (int j = 0; j < n; ++j) {
                if (!matrix[i][j]) {
                    rows[i] = true;
                    cols[j] = true;
                }
            }
        }
        for (int i = 0; i < m; ++i) {
            if (rows[i]) {
                for (int j = 0; j < n; ++j) {
                    matrix[i][j] = 0;
                }
            }
        }
        for (int j = 0; j < n; ++j) {
            if (cols[j]) {
                for (int i = 0; i < m; ++i) {
                    matrix[i][j] = 0;
                }
            }
        }
    }
};