题解 | 小乐乐改数字

using System;
public class Program {
    public static void Main() {
        string str = Console.ReadLine();
        int m = str.Length;
        int[] n = new int[m];
        for (int i = 0; i < m; i++){
            int num = str[i] - '0';
            n[i] = num % 2 == 0 ? 0 : 1;
            }
        bool b = true;
        for (int i = 0; i < m; i++){
            if (b && n[i] == 0){
                continue;
            }
            b = false;
            Console.Write(n[i]);
        }
        if (b){
            Console.Write(0);
        }
    }
          
}