> #include <stdio.h>
> #include <string.h>
> #include <math.h>
> char finish[9]="BULLSHIT";
> char str[500],word[5000][25],w[25];
> int i;
> int numword=0,numgame=0,pletter=0,pstr=0,pwordend=0,real,end;
> void main()
> {
> 	while(gets(str)!=0)
> 	{
> 		pstr=0;
> 		while(str[pstr]!='\0')
> 		{
> 			pletter=0;
> 			real=0;
> 			while((str[pstr]<='z'&&str[pstr]>='a')||(str[pstr]<='Z'&&str[pstr]>='A'))
> 			{
> 				if(real==0)real=1;
> 				w[pletter]=str[pstr];
> 				pletter++;
> 				pstr++;
> 			}
> 			w[pletter]='\0';
> 			if(real)
> 				if(strcmp(w,finish)!=0)
> 				{
> 					for(i=0;i<strlen(str);i++)
> 					{
> 						if(w[i]<='Z'&&w[i]>='A')w[i]=w[i]-'A'+'a';
> 					}
> 					real=1;
> 					for(i=pwordend;i<numword;i++)
> 					{
> 						if(strcmp(word[i],w)==0)
> 						{
> 							real=0;
> 							break;
> 						}
> 					}
> 					if(real)
> 					{
> 						strcpy(word[numword],w);
> 						numword++;
> 					}
> 				}
> 				else
> 				{
> 					numgame++;
> 					pwordend=numword;
> 				}
> 			else pstr++;
> 		}
> 	}
> 	numword=pwordend;
> 	end=numgame;
> 	for(i=2;i<=end;i++)
> 	{
> 		if(numgame%i==0&&numword%i==0)
> 		{
> 			numgame=numgame/i;
> 			numword=numword/i;
> 			i--;
> 		}
> 	}
> 	printf("%d / %d\n",numword,numgame);
> }