逗比做题

 1 #include<stdio.h>
 2 #include<string.h>
 3 
 4 int N;
 5 int a[100][2];
 6 
 7 int solve(int i, int tem)
 8 {
 9     if(i==N)
10     {
11         if(tem==0)
12             return 2;
13         else
14             return 1;
15     }
16     if(a[i][tem]>=0)
17         return a[i][tem];
18     if(tem==0)
19         return a[i][tem]=solve(i+1,0)+solve(i+1,1);
20     else
21         return a[i][tem]=solve(i+1,0);
22 }
23 
24 int main()
25 {
26     int T;
27     scanf("%d",&T);
28     while(T--)
29     {
30         memset(a,-1,sizeof(a));
31         scanf("%d",&N);
32         printf("%d\n",solve(1,0));
33     }
34     return 0;
35 }