LOJ 1396

#include<bits/stdc++.h>
using namespace std;

typedef unsigned long long int  ull;
typedef long long int      ll;
typedef vector<int>        vi;
typedef vector<ll>         vll;
typedef vector<vi>         vvi;
typedef pair<int,int >     pii;
typedef vector< pii >      vpii;
typedef set<int>           sti;

#define sc                 scanf
#define pf                 printf
#define sci(n)             scanf("%d",&n)
#define scii(n,m)          scanf("%d %d",&n,&m)
#define scl(n)             scanf("%lld",&n)
#define scd(n)             scanf("%lf",&n)
#define scs(s)             scanf("%s",s)
#define pfi(n)             printf("%d",n)
#define pfl(n)             printf("%lld",n)
#define pff(n)             cout<<n
#define line               printf("\n")
#define spc                printf(" ")
#define clr(a,x)           memset(a,x,sizeof(a))
#define loop(i,x,y)        for(int i=int(x); i<=int(y); i++)
#define rloop(i,y,x)       for(int i=int(y); i>=int(x); i--)
#define cspf(i)            printf("Case %d: ", i)
#define vout(v)            for(int w=0;w<v.size();w++){if(w) cout<<' '; cout<<v[w];}
#define pb                 push_back
#define mp                 make_pair
#define ff                 first
#define ss                 second
#define all(v)             v.begin(),v.end()
#define rall(v)            v.rbegin(),v.rend()
#define read()             freopen("input.txt", "r", stdin)
#define write()            freopen("output.txt", "w", stdout)
#define fastIO()           ios_base::sync_with_stdio(false); cin.tie(NULL);
/// Constants
#define eps                1e-9
#define PI                 acos(-1.0)  // 3.1415926535897932
#define MAX                1e9
#define MOD                1000007

ll GCD(ll a, ll b) { return b == 0 ? a : GCD(b , a % b); }
ll LCM(ll a, ll b) { return a * (b/GCD(a, b)); }

char s[1000005];

int main()
{
	int t;
	sci(t);
	loop(ca,1,t){
		scanf("%s",s);
		cspf(ca);
		bool f=false;
		int a,b;
		int ln=strlen(s);
		int k=(ln-1)/2;
		if(ln%2) a=k-1;
		else a=k;
		b=k+1;
		for(int i=a,j=b;i>=0;i--,j++){
			if(s[i]<s[j]) break;
			else if(s[i]>s[j]){
				f=true;
				break;
			}
		}
		if(f){
			for(int i=0,j=ln-1;i<j;i++,j--) s[j]=s[i];
			printf("%s\n", s);
		}
		else{
			f=false;
			int x=0;
			for(int i=k;i>=0;i--){
				if(s[i]=='9') continue;
				s[i]=s[i]+1;
				x=i;
				f=true;
				break;
			}
			if(f){
				for(int i=x+1;i<=k;i++) s[i]='0';
				for(int i=0,j=ln-1;i<j;i++,j--) s[j]=s[i];
				printf("%s\n", s);
			}
			else{
				pf("1");
				for(int i=1;i<ln;i++) pf("0");
				pf("1\n");
			}

		}
	}
	return 0;
}