> #include <iostream>
> #include <map>
> using namespace std;
> 
> int P;
> int count = 0;
> 
> int main(int argc, char* argv[])
> {
> 	map<int, int> book;
> 	cin>>P;
> 	int index = 0;
> 	while(index < P)
> 	{
> 		int a;
> 		cin>>a;
> 		if(book.find(a) == book.end())
> 		{
> 			book[a] = a;
> 			count++;
> 		}
> 		index++;
> 	}
> 
> 	cout<<count<<endl;
> 	return 0;
> }

• Re:这样写行不行？不过wa (9) goodpeter 2007-08-24 17:52:53