#include <bits/stdc++.h>

using namespace std;

// C++ program to check if a string is

// substring of other.

// Returns true if s1 is substring of s2

int isSubstring(string s1, string s2)

{

int M = s1.length();

int N = s2.length();

/* A loop to slide pat[] one by one */

for (int i = 0; i <= N - M; i++) {

int j;

/* For current index i, check for

pattern match */

for (j = 0; j < M; j++)

if (s2[i + j] != s1[j])

break;

if (j == M)

return i;

}

return -1;

}

int main()

{

string s,subs;

cin>>s>>subs;

int res = isSubstring(subs, s);

if (res == -1)

cout << "No";

else

cout << "present at index " << res;

return 0;

}