Posted on 2009-02-28 18:55
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代碼如詩－－ACM
1 //2575 Accepted 220K 0MS C++ 756B PKU
2
3 #include <iostream>
4
5 using namespace std ;
6
7 const int size = 3100 ;
8
9 int data[size] ;
10 int used[size] ;
11
12 int inn ;
13
14 int main()
15 {
16 while( scanf( "%d", &inn ) != EOF )
17 {
18 memset( used, 0, sizeof(used) ) ;
19 bool OK = true ;
20
21 for( int i=1; i<=inn; i++ )
22 {
23 scanf( "%d", &data[i] ) ;
24 }
25
26 if( 1 == inn )
27 {
28 printf( "Jolly\n" ) ; continue ;
29 }
30
31 for( int i=2; i<=inn; i++ )
32 {
33 if( abs(data[i]-data[i-1]) < inn )
34 {
35 used[abs(data[i]-data[i-1])] = 1 ;
36 }
37 else
38 {
39 OK = false ; break ;
40 }
41 }
42
43 for( int i=1; i<inn; i++ )
44 {
45 if( 0 == used[i] )
46 {
47 OK = false ; break ;
48 }
49 }
50
51 if( OK ) printf( "Jolly\n" ) ;
52 else printf( "Not jolly\n" ) ;
53
54 }
55 return 0 ;
56 }