杭电1059 

 1 //简单的背包应用，奈何我摔了好几次
 2 #include<stdio.h>
 3 #include<string.h>
 4 #define maxn 120000
 5 int n[6];
 6 int a[maxn];
 7 int Room;
 8 void zero_one_bag(int);
 9 void complete_bag(int);
10 void multiple_bag(int,int);
11 int main()
12 {
13     int ant=0;
14     while(~scanf("%d%d%d%d%d%d",&n[0],&n[1],&n[2],&n[3],&n[4],&n[5]) && n[0]+n[1]+n[2]+n[3]+n[4]+n[5])
15     {
16         printf("Collection #%d:\n",++ant);
17         Room=n[0]*1+n[1]*2+n[2]*3+n[3]*4+n[4]*5+n[5]*6;
18         if(Room%2)
19             puts("Can't be divided.\n");
20         else
21         {
22             memset(a,0,sizeof a);
23             a[0]=1;
24             Room/=2;
25             for(int i=0; i<6; ++i)
26                 if(n[i])
27                     multiple_bag(i+1,n[i]);
28             if(a[Room])
29                 puts("Can be divided.\n");
30             else
31                 puts("Can't be divided.\n");
32         }
33     }
34 }
35 
36 void zero_one_bag(int room)
37 {
38     for(int i=Room; i>=room; --i)
39     {
40         if(a[i-room])
41             a[i]=1;
42     }
43 }
44 
45 void complete_bag(int room)
46 {
47     for(int i=room; i<=Room; ++i)
48     {
49         if(a[i-room])
50             a[i]=1;
51     }
52 }
53 
54 void multiple_bag(int room,int num)
55 {
56     if(room * num >= Room)
57     {
58         complete_bag(room);
59         return ;
60     }
61 
62     for(int k=1; k<num; k*=2)
63     {
64         zero_one_bag(room*k);
65         num-=k;
66     }
67     zero_one_bag(room*num);
68 }

 

posted @ 2017-02-17 22:01  Posase  阅读(183)  评论(0)    收藏  举报