地址：http://acm.nyist.net/JudgeOnline/problem.php?pid=204
1 #include<stdio.h>
2 #include<stdlib.h>
3 #include<math.h>
4 int main()
5 {
6 int i,N,k,t,m,n,a,b;
7 char s[65536];
8 scanf("%d",&N);
9 getchar();
10 gets(s);
11 for(a=b=i=0;i<N;i++)
12 {
13 if(s[i]=='U')
14 a++;
15 if(s[i]=='D')
16 b++;
17 if(s[i]=='S')
18 break;
19 }
20 m=a;
21 n=b+a;
22 while(m!=0)
23 {
24 k=n%m;
25 n=m;
26 m=k;
27 }
28 if(i!=N)
29 printf("Bingo\n");
30 else if(fabs((float)a/(a+b)-0.5)>0.003)
31 printf("Fail\n");
32 else
33 printf("%d/%d\n",a/n,(a+b)/n);
34 system("pause");
35 return 0;
36 }
