Posted on 2009-03-25 16:33
Hero 阅读(70)
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代码如诗－－ACM
1 //1125 Accepted 0 192 698 C++
2 #include <iostream>
3 #include <set>
4
5 using namespace std ;
6 set<int> myset ;
7
8 int tnum ;
9
10 int main()
11 {
12 while( cin >> tnum )
13 {
14 while( tnum -- )
15 {
16 myset.clear() ;
17 int ina, inb, num ;
18 cin >> ina >> inb ;
19
20 for( int i=1; i<=ina; i++ )
21 {
22 cin >> num ; myset.insert( num ) ;
23 }
24 for( int i=1; i<=inb; i++ )
25 {
26 cin >> num ; myset.erase( num ) ;
27 }
28
29 set<int>::iterator iter ;
30 if( myset.empty() )
31 {
32 cout << "NULL" ;
33 }
34 else
35 {
36 char *blank = "" ;
37 for( iter=myset.begin(); iter!=myset.end(); iter++ )
38 {
39 cout << blank << *iter ; blank = " " ;
40 }
41 }
42
43 cout << endl ;
44 }
45
46 }
47 return 0 ;
48 }