def rank_str(rank: int) -> str:
    match rank % 10:
        case 1:
            return f"{rank}st"
        case 2:
            return f"{rank}nd"
        case 3:
            return f"{rank}rd"
        case _:
            return f"{rank}th"


def main():
    H, N = map(int, input().split())
    other_height = [int(input()) for _ in range(N-1)]
    other_height.sort(reverse=True)
    for idx, height in enumerate(other_height):
        if H > height:
            print(rank_str(idx+1))
            break
    else:
        print(rank_str(idx+2))


if __name__ == "__main__":
    main()