五子棋

AC代码

#include<iostream>
#include<algorithm>
using namespace std;
int main()
{
	int f=0;
	string s;
	while(cin>>s)
	{
		if(s!="END")
			f++;
		else if(f%2==0)
		{
			cout<<"W"<<" "<<f<<endl;
			f=0;
		}
		else
		{
			cout<<"B"<<" "<<f<<endl;
			f=0;			
		}
	}
	return 0;
}