20分求调

#include<iostream>
using namespace std;
int main()
{
	long long x;
	char a,b;
	cin>>x>>a>>b;
	if(a=='B'&&b!='C'||b=='B'&&a!='C')
	{
		cout<<x*0.8;
	} 
	else if(a=='C'&&b!='B'||b=='C'&&a!='B')
	{
		cout<<x*0.7; 
	} 
	else if(a=='B'&&b=='C'||a=='C'&&b=='B')
	{
		cout<<x*0.6;
	}
	else
	{
		cout<<x;
	}
	return 0;
}