hdu 4541 Ten Googol

http://acm.hdu.edu.cn/showproblem.php?pid=4541

打表找规律

 1 #include <cstdio>
 2 #include <cstring>
 3 #include <algorithm>
 4 using namespace std;
 5
 6 int t;
 7 int n,m;
 8 int a[25][25]={{4, 1, 2, 6, 10},{4, 0, 4, 5, 9},{6, 3, 7, 8, 40, 50, 60},{6, 11, 12, 20, 30, 80, 90},{3, 15, 16, 70}, {13,13, 14 ,18, 19 ,41 ,42 ,46 ,51 ,52 ,56 ,61 ,62 ,66}, {26,17 ,21 ,22 ,26 ,31 ,32 ,36 ,44 ,45 ,49 ,54 ,55 ,59 ,64 ,65 ,69 ,81 ,82 ,86 ,91 ,92 ,96, 101}};
 9
10
11 int main()
12 {
13     scanf("%d",&t);
14     int cas=1;
15     while(t--)
16     {
17         scanf("%d%d",&n,&m);
18         printf("Case #%d: ",cas++);
19         if(m>a[n-3][0])
20         {
21             printf("-1\n");
22         }
23         else if(n==9&&m==23)
24         {
25             printf("10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000\n");
26         }
27         else if(n==9&&m==24)
28         {
29              printf("20000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000\n");
30         }
31         else if(n==9&&m==25)
32         {
33              printf("60000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000\n");
34         }
35         else if(n==9&&m==26)
36         {
37             printf("100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000\n");
38         }
39         else
40         {
41             printf("%d\n",a[n-3][m]);
42         }
43     }
44     return 0;
45 }