蓝桥杯，卡片

题目链接：https://www.lanqiao.cn/problems/1443/learning/

#include <cstdio>
#include <iostream>
#include <vector>

using namespace std;

int main() {
	
	int array[10];
	
	for (int i = 0; i < 10; i++) {
		array[i] = 2021;
	}
	
	bool is_can = true;
	int j = 0;
	while (is_can) {
		
		j++;
		int num = j;
		while (num > 0) {
			int in = num % 10;
			if (array[in] > 0) {
				array[in]--;
			} else {
				is_can = false;
				break;
			}
			num /= 10;
		}
	}
	
	cout << j - 1;
	
	return 0;
}