#pragma comment(linker, "/STACK:1024000000,1024000000")
#include<cstdio>
#include<string>
#include<iostream>
#include<cstring>
#include<cmath>
#include<stack>
#include<queue>
#include<vector>
#include<map>
#include<stdlib.h>
#include<algorithm>
#define LL __int64
#define FIN freopen("in.txt","r",stdin)
using namespace std;
const int MAXN=50000+5;
char str[MAXN*2],b[MAXN];
int nex[MAXN*2];
int n;

void getnext()
{
    int j=0,k=-1;
    nex[0]=-1;
    while(j<n)
    {
        if(k==-1 || str[j]==str[k])
            nex[++j]=++k;
        else
            k=nex[k];
    }
}

int main()
{
    //FIN;
    while(scanf("%s %s",str,b)!=EOF)
    {
        int len1=strlen(str),len2=strlen(b);

        strcat(str,b);
        n=strlen(str);
        getnext();
        while(nex[k]>len1 || nex[k]>len2)
            k=nex[k];

        if(nex[n]==0) printf("0\n");
        else
        {
            for(int i=0;i<len;i++)
                printf("%c",str[i]);
            printf(" %d\n",len);
        }
    }
    return 0;
}