shiracamus

import java.util.*;
import java.util.stream.*;
import java.awt.*;
import java.awt.Point;
import java.awt.event.*;
import javax.swing.*;

interface Disk {
	public void paint(Graphics g, Point p, int size);
	public String toString();

shiracamus

class Zodiac:

    def __init__(self, name, last_day, best_partner):
        self.name = name
        self.last_day = last_day
        self.best_partner = best_partner

    def __str__(self):
        return self.name

shiracamus

import os
import sys
import subprocess
import tempfile


def autopep8(code):
    with tempfile.NamedTemporaryFile('w', delete=False) as f:
        f.write(code)
        code_file_name = f.name

shiracamus

class Formula:

    def __init__(self, text):
        self.text = text.replace(" ", "")
        self.pos = 0

    def __bool__(self):
        return self.pos < len(self.text)

    def fetch(self):

shiracamus

from queue import Queue

def solve():
    width, height = map(int, input().split())
    world = [[*map(int, input().split()), 0] for _ in range(height)] + [[0] * width]
    iland = 0
    q = Queue()
    for y in range(height):
        for x in range(width):
            if world[y][x]:

shiracamus

def n_queen(n):
    count = 0
    for board in put_queens(board=[None]*n):
        for queen in board:
            print(''.join('.Q'[x == queen] for x in range(n)))
        print()
        count += 1
    print(count, 'ways')

shiracamus

class Bottle:

    def __init__(self, capacity, water):
        self.capacity = capacity
        self.water = water

    def __repr__(self):
        return repr(self.water)

    def __eq__(self, water):

shiracamus

N, M = map(int, input().split())
a = {int(input()) for i in range(M)}
n, m = 1, 0
for i in range(1, N + 1):
    n, m = (i not in a) * (n + m) % 1000000007, n
print(n)

shiracamus

class Board:

    def __init__(self, size, space=None):
        self.cells = [[space] * size for i in range(size)]
        self.space = space

    def __iter__(self):
        return (tuple(row) for row in self.cells)

    def __getitem__(self, pos):

shiracamus

import tkinter as tk
import math


class Board:

    def __init__(self, divide, top=90):
        self.divide = divide
        self.top = top
        self.offset = top - 360 // divide // 2