五、完善程序-2

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#include <iostream>
#include <string>
#include <vector>
using namespace std;
int min(int x, int y, int z) {
    return min(min(x, y), z);
}
int edit_dist_dp(string str1, string str2) {
    int m = str1.length();
    int n = str2.length();
    vector<vector<int>> dp(m + 1, vector<int>(n + 1));
    for (int i = 0; i <= m; i++) {
        for (int j = 0; j <= n; j++) {
            if (i == 0)
                dp[i][j] = ①;
            else if (j == 0)
                dp[i][j] = ②;
            else if (③)
                dp[i][j] = ④;
            else
                dp[i][j] = 1 + min(dp[i][j - 1], dp[i - 1][j], ⑤);
        }
    }
    return dp[m][n];
}
int main() {
    string str1, str2;
    cin >> str1 >> str2;
    cout << "Mininum number of operation:" << edit_dist_dp(str1, str2) << endl;
    return 0;
}