1 #include <cctype>
 2 #include <cstdio>
 3 
 4 const int mod=10007;
 5 const int MAXN=10000010;
 6 
 7 int n,ans,T;
 8 
 9 int next[MAXN],dp[MAXN];
10 
11 char s[MAXN];
12 
13 inline void read(int&x) {
14     int f=1;register char c=getchar();
15     for(x=0;!isdigit(c);c==‘-‘&&(f=-1),c=getchar());
16     for(;isdigit(c);x=x*10+c-48,c=getchar());
17     x=x*f;
18 }
19 
20 inline void KMP_next() {
21     for(int i=1;i<=n;++i) next[i]=0;
22     next[1]=0;  
23     int j=0;  
24     for(int i=2;i<=n;i++){  
25         while(j>0&&s[j+1]!=s[i]) j=next[j];  
26         if(s[j+1]==s[i]) j+=1;  
27         next[i]=j;  
28     }  
29 }
30 
31 int hh() {
32     freopen("ha.in","r",stdin);
33     freopen("ha.out","w",stdout);
34     read(T);
35     while(T--) {
36         read(n);
37         scanf("%s",s+1);
38         KMP_next();
39         ans=0;
40         for(int i=1;i<=n;++i) {
41             dp[i]=(dp[next[i]]+1)%mod;
42             ans=(ans+dp[i])%mod;
43         }
44         printf("%d\n",ans);
45     }
46     fclose(stdin);
47     fclose(stdout);
48     return 0;
49 }
50 
51 int sb=hh();
52 int main(int argc,char**argv) {;}