1514：Fake Tickets

又找了一道很水的题a了下，纯属无聊，还是把地址和代码贴上来吧：

http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=514

#define _CRT_SECURE_NO_WARNINGS 1
#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;

int main(){
	int m, n,x, sum,i,ticket[10009];
	while (scanf("%d%d", &n, &m) && (m != 0 && n != 0)){
		sum = 0;
		for (i = 1; i <= n; i++)
			ticket[i] = 0;
		for (i = 1; i <= m; i++){
			scanf("%d", &x);
			ticket[x]++;
		}
		for (i = 1; i <= n; i++){
			if (ticket[i]>1)
				sum ++;
		}
		printf("%d\n", sum);
	}
	return 0;
}