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

void initMatrix(char *matrix)
{
    int index = 0;

    for (int i = 48; i <= 57; i++) {
        matrix[index] = i;
        index++;
    }

    for (int i = 65; i <= 90; i++) {
        matrix[index] = i;
        index++;
    }

    for (int i = 97; i <= 122; i++) {
        matrix[index] = i;
        index++;
    }

    matrix[62] = ' ';
    matrix[63] = ',';
}

void mapMatrix(char *input, char *matrix, char *cypher) {
    int index = 0;

    char * ptr;
    ptr = strtok (input," ");

    while (ptr != NULL) {
        int n = atoi(ptr);
        cypher[index] = matrix[n];
        ptr = strtok (NULL, " ");
        index++;
    }
}

void decrypt(char *hash, char *input, char *cypher) {

}

void encrypt(char *hash, char *input, char *cypher) {
    int offset = 0;

    for (int i = 0; i < 256; i++) {
        if (input[i] == '\0')
            return;

        for (int j = 0; j < 64; j++)
            if (hash[i % (strlen(hash) - 1)] == cypher[j]) {
                offset = j;
                break;
            }

        for (int j = 0; j < 64; j++)
            if (input[i] == cypher[j]) {
                printf("%c", cypher[(j + offset) % (strlen(cypher) - 1)]);
            }
    }
}

int main() {
    char matrix[64];
    char cypher[64];

    char input[256];
    char hash[256];
    char operation[9];

    initMatrix(matrix);
    fgets(operation, sizeof(operation), stdin);

    fgets(input, sizeof(input), stdin);

    mapMatrix(input, matrix, cypher);

    fgets(hash, sizeof(hash), stdin);
    fgets(input, sizeof(input), stdin);

    if (!(strcmp(operation, "encrypt\n")))
        encrypt(hash, input, cypher);

    else if (!(strcmp(operation, "decrypt\n")))
        decrypt(hash, input, cypher);

    return 0;
}