class LRUCache:

    def __init__(self, capacity: int):
        self.capacity = capacity
        self.slots = []

    def get(self, key: int) -> int:
        if key <= len(self.slots) -1:
            return self.slots[key]
        return -1

    def put(self, key: int, value: int) -> None:
        if self.capacity > len(self.slots):
            self.slots.append(value)
        else:
            self.slots[len(self.slots) - 1] = value

def main():
    cache = LRUCache(2)
    print(cache.get(1))
    print(cache.get(0))

    cache.put(0,1)
    print(cache.get(0))

if __name__ == "__main__":
    main()