#include<iostream>
#include<string>
#include<time.h>
using namespace std;

int test(char* s1, char* s2, int length1, int length2)
{
  int temp = 0;
  int count = 0;

  for (int i = 0; i < length1; i++)
  {
    count = 0;
    if (s1[i] == s2[0])
    {
      temp = i;
      for (int j = i, k = 0; j < length1, k < length2; j++, k++)
      {
        if (s1[j] == s2[k])
        {
          count++;
        }
        else
        {
          break;
        }
      }
      if (length2 == count)
      {
        return temp;
      }
    }
  }
  return -1;
}


int main(void)
{

  char s1[20];
  char s2[20];
  cin >> s1;
  cin >> s2;

  int ret = test(s1, s2, strlen(s1), strlen(s2));
  if (ret < 0)
  {
    cout << "没找到" << endl;
  }
  else
  {
    cout << "s2的第一个字符在s1的下标是" << ret;
  }




  return 0;
}