Treasure Finder

import itertools as it
keys = [int(x) for x in input().split()]


def extract_treasure(a: str, x: str):
    _result = ''
    idx = a.index(x) + 1
    while True:
        if a[idx] == '&':
            break
        _result += a[idx]
        idx += 1
    return _result


def extract_location(a: str, x: str):
    result_ = ''
    idx = a.index(x) + 1
    while a[idx] != '>':
        result_ += a[idx]
        idx += 1
    return result_


while True:
    text = input()
    if text == 'find':
        break
    new_text = ''
    for x, y in zip(text, it.cycle(keys)):
        new_chr = chr(ord(x) - y)
        new_text += new_chr
    i= 0
    treasure = ''
    location = ''
    while i < len(new_text):
        if new_text[i] == '&':
            treasure = extract_treasure(new_text, new_text[i])
            i += len(treasure) + 1
        elif new_text[i] == '<':
            location = extract_location(new_text, new_text[i])
            i += len(location)
        i += 1
    print(f'Found {treasure} at {location}')