#include <string.h>
#include <stdio.h>
#include <stdlib.h>

int cmp(const void* a, const void* b){
    const char** f = (const char**)a;
    const char** g = (const char**)b;
    return strcmp(*f, *g);
}

int cmp1 (const void* key, const void* val){
    const char* k = (const char*)key;
    const char** v = (const char**)val;
    return strcmp(k, *v);
}

int main() {
    char arr [1002];
    char* pointer [502];
    char str [32];
    fgets(arr, 1002, stdin);
    fgets(str, 32, stdin);
    str[strcspn(str, "\n")] = '\0';
    arr[strcspn(arr, "\n")] = '\0';
    char* pch = strtok(arr," .");
    int m = 0;
    while (pch != NULL){
        pointer[m] = pch;
        m++;
        pch = strtok(NULL, " .");
    }
    int len_str = (int) strlen(str);
//    str[len_str - 1] = '\0';
    int len = m;
    qsort(pointer, len, sizeof(char*), cmp);
    char** result = (char**) bsearch(str, pointer, len, sizeof(char*), cmp1);
    if (result)
        printf("exists");
    else
        printf("doesn't exist");
    return 0;
}