#include <stdio.h>

enum
{
    SMALL_START = 11,
    BIG_START = 37,
    THIRD_BIT = 3,
    SECOND_BIT = 2,
    MAX_CODE = 63
};

int
main(void)
{
    char curr = getchar();
    int diff;

    while (curr != EOF) {
        _Bool skip = 0;

        if ('0' <= curr && curr <= '9')
            diff = '0' - 1;
        else if ('a' <= curr && curr <= 'z')
            diff = 'a' - SMALL_START;
        else if ('A' <= curr && curr <= 'Z')
            diff = 'A' - BIG_START;
        else
            skip = 1;

        if (!skip) {
            curr -= diff;
            curr &= ~(1 << SECOND_BIT);
            curr ^= (1 << THIRD_BIT);

            if (curr == 0)
                printf("@");
            else if (curr == MAX_CODE)
                printf("#");
            else
                printf("%c", curr + diff);
        }
        curr = getchar();
    }
    return 0;
}