#include <iostream>
#include <cstdio>
#define left llleft
#define index iiidex
using namespace std;
int getvalue1(char x) {
  if (x=='K' || x=='Q' || x=='J' || x=='T') return 10;
  if (x=='A') return 11;
  return x-'0';
}
int getvalue2(char x,char y) {
  if (x=='A' && y=='A') return 12;
  else return getvalue1(x)+getvalue1(y);
}
int left[100];
char output[100];

char list[100];  
int index[400];
int main() {
  char ch1,ch2,ch3;
  int i,n;
  list[0]='2';
  list[1]='3';
  list[2]='4';
  list[3]='5';
  list[4]='6';
  list[5]='7';
  list[6]='8';
  list[7]='9';
  list[8]='A';
  list[9]='K';
  list[10]='Q';
  list[11]='J';
  list[12]='T';
  
  
  for (i='2';i<='7';++i) {
    index[i]=i-'2';
  }
  index['A']=8;
  index['K']=9;
  index['Q']=10;
  index['J']=11;
  index['T']=12;
  double o;
  bool first=1;
  while (1) {

    scanf("%d",&n);
    if (n==0) break;

    if (first) {
      first=0;
    }
    else putchar('\n');
    for (i=0;i<=12;++i) left[i]=4*n;
    
    scanf(" %c %c %c",&ch1,&ch2,&ch3);
    left[index[ch1]]--;
    left[index[ch2]]--;
    left[index[ch3]]--;
    int my=getvalue2(ch2,ch3);
    o=0;
    for (i=0;i<=12;++i) {
      if (getvalue2(ch1,list[i])<my) {
	o+=(double)left[i]*100/(52*n-3);
      }
    }
    
    sprintf(output,"%.3lf",o);
    if (strcmp(output,"-0.000")==0) printf("0.000");
    else printf("%s",output);
    putchar('%');
    putchar('\n');
  }
  return 0;
}

	
      
    
    
    
    
    
    

• Re.......... (1717) unm 2007-10-13 06:42:09