1 #include<vector>
2 #include<iostream>
3 #include<cstdio>
4 #include<string.h>
5 using namespace std;
6
7 const int N=3000010;
8 int n, p[N];
9 char s[N], str[N];
10
11 #define _min(x, y) ((x)<(y)?(x):(y))
12
13 void kp()
14 {
15 int i;
16 int mx = 0;
17 int id;
18 for(i=n; str[i]!=0; i++)
19 str[i] = 0;
20 for(i=1; i<n; i++)
21 {
22 if( mx > i )
23 p[i] = _min( p[2*id-i], p[id]+id-i );
24 else
25 p[i] = 1;
26 for(; str[i+p[i]] == str[i-p[i]]; p[i]++)
27 ;
28 if( p[i] + i > mx )
29 {
30 mx = p[i] + i;
31 id = i;
32 }
33 }
34 }
35
36 void init()
37 {
38 int i, j, k;
39 str[0] = '$';
40 str[1] = '#';
41 for(i=0; i<n; i++)
42 {
43 str[i*2+2] = s[i];
44 str[i*2+3] = '#';
45 }
46 n = n*2+2;
47 s[n] = 0;
48 }
49
50 int main()
51 {
52 int i, ans;
53 int t;
54 cin >> t;
55 while(t--)
56 {
57 cin >>s;
58 n = strlen(s);
59 init();
60 kp();
61 ans = 0;
62 for(i=0; i<n; i++)
63 if(p[i]>ans)
64 ans = p[i];
65 printf("%d\n", ans-1);
66 }
67 return 0;
68 }
