1 #include<stdio.h>
2 char s[65550];
3 int cus(int x,int y)
4 {
5 if(y)
6 cus(y,x%y);
7 else
8 return x;
9 }
10 int main()
11 {
12 int n;
13 scanf("%d",&n);
14 scanf("%s",s);
15 int i,u,d;
16 for(i=u=d=0; i<n; ++i)
17 {
18 if(s[i]=='S')
19 break;
20 else if(s[i]=='U')
21 ++u;
22 else if(s[i]=='D')
23 ++d;
24 }
25 double temp = 1.0*u/n;
26 int cnt=cus(u,n);
27 if(i<n)
28 puts("Bingo");
29 else if(temp >= 0.497 && temp <= 0.503)
30 printf("%d/%d\n",u/cnt,n/cnt);
31 else
32 puts("Fail");
33 return 0;
34 }
