#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;
int book[610];
int main()
{
int n;
cin>>n;
memset(book, 0, sizeof(book));
for(int i = 1; i<=n; i++)
{
int k;
cin>>k;
book[k]++;
}
int cnt = 0;
for(int i = 1; i<=600; i++)
{
if(book[i]!=0)
cnt++;
}
cout<<cnt<<endl;
return 0;
}
Codeforces 937A
最新推荐文章于 2024-03-29 17:26:37 发布