<span style="font-size:18px;">
</span>

<span style="font-size:18px;">include<cstdio>
#include<cstring>
char str[3000000],s[3000000];
int p[3000000];
int min(int a,int b)
{
	if(a<b)
		return a;
	return b; 
} 
int max(int a,int b)
{
	if(a>b)
		return a;
	return b; 
} 
int main()
{
	int t;
	scanf("%d",&t);
	while(t--)
	{
		memset(p,0,sizeof(p));
		memset(s,'\0',sizeof(s)); 
		scanf("%s",str);
		int len=strlen(str),i;
		for(i=len;i>=1;--i)
		{
			s[i*2+1]='#';
			s[i*2]=str[i-1]; 
		} 
		s[0]='@';s[1]='#';
		int mx=0,mi=0,ans=0;
		len=strlen(s);
		p[0]=1; 
		for(i=1;i<len;++i)
		{
			if(i<mx)
				p[i]=min(p[2*mi-i],mx-i);
			else
				p[i]=1;
			while(s[i+p[i]]==s[i-p[i]])
				p[i]+=1;
			if(mx<p[i]+i)
			{
				mx=p[i]+i;
				mi=i;
			} 
			ans=max(ans,p[i]-1); 
		} 
		printf("%d\n",ans); 
	}
	return 0; 
}</span>