#include <string>
#include <deque>
#include <cstdint>
#include <vector>
#include <list>
#include <cmath>
#include <algorithm>
#include <map>
#include <set>
#include <iostream>
#include <cstdio>
#include <cstdlib>
using namespace std;

int main(int argc, char **argv) 
{
  string pattern, file, s;
  size_t i;

  if (argc != 2) {
    fprintf(stderr, "usage: pattern < file\n");
    exit(1);
  }

  while (getline(cin, s)) {
    if (file.size() != 0) file += " ";
    file += s;
  }

  pattern = argv[1];

  i = file.find(pattern);
  if (i == string::npos) {
    printf("Not found.\n");
  } else {
    printf("%lu\n", i);
  }
  return 0;
}