#include <cstdio>
#include <cstring>

using namespace std;

char s[1000], a[10000];

int foo(char c)
{
  if (c >= 'A' && c <= 'Z')
    return (c - 'A' + 'a');
  else
    return c;
}
int main()
{
  int i, y, w, l1, l, z, k;
  freopen("search.in", "r", stdin);
  freopen("search.out", "w", stdout);
  gets(s);
  l = strlen(s);

  z = fread(a, 1, 2000, stdin);
  a[z] = 0;
  //printf("%d", z);
  for ( i = 0; i < z; i++)
  {
    if (foo(a[i]) != foo(s[0]))
      printf("%c", a[i]);
    else
    {
      l1 = 0;
      w = i;
      for (y = 0; y < l; y++)
      {
        k = 0;
        if (s[y] == ' ')
        {
          while (a[w + y] == ' ' || a[y + w] == 9 || a[w + y] == '\n')
          {
           //printf("%d %d ", a[w + y], w);
            w++;
          }
          //y++;
          w--;
        }
        if (foo(a[y + w]) == foo(s[y]))
        {
          l1++;
        }
        else
        {
         // printf("[%c %c]", a[y + w] , s[y]);
        }
      }
      //printf("%d", l1);
      if (l1 == l)
      {
        printf("@");
      }
      printf("%c", a[i]);
    }
  }
return 0;

}