水题,,,
#include<iostream>
#include<string>
#include<cstdio>
using namespace std;
int main()
{ int n;
char a[10005];
while(cin>>n)
{ scanf("%s",a);
int i=0;
int sum=0;
while(i<n)
{
if(a[i]<='9') sum+=16;
if(a[i+1]<='9') sum+=8;
if(a[i+2]<='9') sum+=4;
if(a[i+3]<='9') sum+=2;
if(a[i+4]<='9') sum+=1;
printf("%c",sum+65);
i+=5;
sum=0;
}
cout<<endl;
}return 0;
}