Buggy python submission (verdict: Runtime Error):
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**9)

if m == 0:
    print(countWays_memo(n))
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    def countWays_memo(n):
        memo = [-1]*(n+1)
        def _countWays(n):
            if n < 0:
                return 0
            elif n == 0:
                return 1
            else:
                if memo[n] > -1:
                    return memo[n]
                else:
                    memo[n] = _countWays(n-1) + _countWays(n-2) 
                    return memo[n]
        return _countWays(n)

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Fixed submission:
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**9)

def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)
    
if m == 0:
    print(countWays_memo(n)% 1000000007)
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Buggy python submission (verdict: Runtime Error):
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**20)

if m == 0:
    print(countWays_memo(n))
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    def countWays_memo(n):
        memo = [-1]*(n+1)
        def _countWays(n):
            if n < 0:
                return 0
            elif n == 0:
                return 1
            else:
                if memo[n] > -1:
                    return memo[n]
                else:
                    memo[n] = _countWays(n-1) + _countWays(n-2) 
                    return memo[n]
        return _countWays(n)

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Fixed submission:
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**9)

def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)
    
if m == 0:
    print(countWays_memo(n)% 1000000007)
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Buggy python submission (verdict: Runtime Error):
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**5)

if m == 0:
    print(countWays_memo(n))
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    def countWays_memo(n):
        memo = [-1]*(n+1)
        def _countWays(n):
            if n < 0:
                return 0
            elif n == 0:
                return 1
            else:
                if memo[n] > -1:
                    return memo[n]
                else:
                    memo[n] = _countWays(n-1) + _countWays(n-2) 
                    return memo[n]
        return _countWays(n)

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Fixed submission:
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**9)

def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)
    
if m == 0:
    print(countWays_memo(n)% 1000000007)
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Buggy python submission (verdict: Runtime Error):
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(n)

list_a = []
for i in range(m):
    list_a.append(int(input()))
    
def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)

steps = []
now_step = -1
for i in range(len(list_a)):
    steps.append(list_a[i]-now_step-2)
    now_step = list_a[i]
steps.append(n-now_step-1)

if steps[0] == 0:
    steps[0] = 1

dict_steps = {}
for s in set(steps):
    if s == 0:
        print(0)
    else:
        dict_steps[s] = steps.count(s)

ans = 1
for k,v in dict_steps.items():
    ans *= countWays_memo(k)**v
    
if steps.count(0) == 0:
    print(ans% 1000000007)

Fixed submission:
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**9)

def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)
    
if m == 0:
    print(countWays_memo(n)% 1000000007)
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Buggy python submission (verdict: Runtime Error):
n,m=map(int, input().split())  #複数数値入力

if m == 0:
    print(countWays_memo(n))
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    def countWays_memo(n):
        memo = [-1]*(n+1)
        def _countWays(n):
            if n < 0:
                return 0
            elif n == 0:
                return 1
            else:
                if memo[n] > -1:
                    return memo[n]
                else:
                    memo[n] = _countWays(n-1) + _countWays(n-2) 
                    return memo[n]
        return _countWays(n)

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Fixed submission:
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**9)

def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)
    
if m == 0:
    print(countWays_memo(n)% 1000000007)
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Buggy python submission (verdict: Runtime Error):
n,m=map(int, input().split())  #複数数値入力

list_a = []
for i in range(m):
    list_a.append(int(input()))
    
def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)

steps = [list_a[0]]
now_step=list_a[0]+1
for i in range(len(list_a)-1):
    steps.append(list_a[i+1]-now_step)
    now_step = list_a[i+1]+1
steps.append(n-now_step+1)


dict_steps = {}
for s in set(steps):
    dict_steps[s] = steps.count(s)

ans = 1
for k,v in dict_steps.items():
    ans *= countWays_memo(k-1)**v
    
print(ans% 1000000007)

Fixed submission:
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**9)

def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)
    
if m == 0:
    print(countWays_memo(n)% 1000000007)
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Buggy python submission (verdict: Runtime Error):
n,m=map(int, input().split())  #複数数値入力

list_a = []
for i in range(m):
    list_a.append(int(input()))
    
def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)

steps = [list_a[0]]
now_step=list_a[0]+1
for i in range(len(list_a)-1):
    steps.append(list_a[i+1]-now_step)
    now_step = list_a[i+1]+1
steps.append(n-now_step+1)


dict_steps = {}
for s in set(steps):
    if s == 0:
        print(0)
    else:
        dict_steps[s] = steps.count(s)

ans = 1
for k,v in dict_steps.items():
    ans *= countWays_memo(k-1)**v
    
if steps.count(0) == 0:
    print(ans% 1000000007)

Fixed submission:
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**9)

def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)
    
if m == 0:
    print(countWays_memo(n)% 1000000007)
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)

Buggy python submission (verdict: Runtime Error):
n,m=map(int, input().split())  #複数数値入力

list_a = []
for i in range(m):
    list_a.append(int(input()))
    
def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)

steps = []
now_step = -1
for i in range(len(list_a)):
    steps.append(list_a[i]-now_step-2)
    now_step = list_a[i]
steps.append(n-now_step-1)

if steps[0] == 0:
    steps[0] = 1

dict_steps = {}
for s in set(steps):
    if s == 0:
        print(0)
    else:
        dict_steps[s] = steps.count(s)

ans = 1
for k,v in dict_steps.items():
    ans *= countWays_memo(k)**v
    
if steps.count(0) == 0:
    print(ans% 1000000007)

Fixed submission:
n,m=map(int, input().split())  #複数数値入力

import sys

sys.setrecursionlimit(10**9)

def countWays_memo(n):
    memo = [-1]*(n+1)
    def _countWays(n):
        if n < 0:
            return 0
        elif n == 0:
            return 1
        else:
            if memo[n] > -1:
                return memo[n]
            else:
                memo[n] = _countWays(n-1) + _countWays(n-2) 
                return memo[n]
    return _countWays(n)
    
if m == 0:
    print(countWays_memo(n)% 1000000007)
else:
    list_a = []
    for i in range(m):
        list_a.append(int(input()))

    steps = [list_a[0]]
    now_step=list_a[0]+1
    for i in range(len(list_a)-1):
        steps.append(list_a[i+1]-now_step)
        now_step = list_a[i+1]+1
    steps.append(n-now_step+1)


    dict_steps = {}
    for s in set(steps):
        dict_steps[s] = steps.count(s)

    ans = 1
    for k,v in dict_steps.items():
        ans *= countWays_memo(k-1)**v

    print(ans% 1000000007)