Harryxun/stf_run huggingface dataset:
import math
import numpy as np
N,M=map(int,input().split())
A=list(map(int,input().split()))
c=1
test=A[0]
l=0

while test%2 == 0:
  test=test//2
  c*=2

def lcm_base(x, y):
    return (x * y) // math.gcd(x, y)
  
for i in np.arange(N-1):
  if A[i+1]%c!=0:
    print(0)
    l=1
    break
  elif A[i+1]%(c*2)==0:
    print(0)
    l=1
    break
  else:
    k=A[i+1]//c
    test=lcm_base(test, k)
if l==0:
  k=int(test*c/2+0.5)
  print(M//k//2 + M//k%2)

### FIXED CODE ###

import math
import numpy as np
N,M=map(int,input().split())
A=list(map(int,input().split()))
c=1
test=A[0]
l=0

while test%2 == 0:
  test=test//2
  c*=2

def lcm_base(x, y):
    return (x * y) // math.gcd(x, y)
  
for i in np.arange(N-1):
  if A[i+1]%c!=0:
    print(0)
    l=1
    break
  elif A[i+1]%(c*2)==0:
    print(0)
    l=1
    break
  else:
    k=A[i+1]//c
    test=lcm_base(test, k)
if l==0:
  k=test*c//2
  print(M//k//2 + M//k%2)
N = 10**6

N1 = [i for i in range(N+40)]
N2 = [i for i in range(N+40)]

N1[0] = 0
N2[0] = 0

p = [n*(n+1)*(n+2)//6 for n in range(1,200) if n *(n+1)*(n+2)//6< N+1]
p2 = [n*(n+1)*(n+2)//6 for n in range(1,200) if n *(n+1)*(n+2)//6< N+1 and n *(n+1)*(n+2)//6 % 2 ==1 ]
#print(p2)
for p_ in p:
    if p_ > len(N1) :
        continue
    for j in range(p_,len(N1)):
#        print(j)
        N1[j] = min(N1[j],N1[j-p_]+1)

for p_ in p2:
    if p_ > len(N2) :
        continue
    for j in range(p_,len(N2)):
        N2[j] = min(N2[j],N2[j-p_]+1)
#print('a')
while True:
    n = int(input())
    if n == 0:
        break
    print(N1[n],N2[n])



### FIXED CODE ###

import copy

item = [i *(i +1) * (i+2) //6 for i in range(1,181)]
q = []
while True:
    in_ = int(input())
    if in_ == 0:
        break
    q.append(in_)

INIT = 1000
MAX = max(q) +10
ans = [INIT] *MAX
ans[0] = 0
odd_item = [i for i in item if i % 2 ==0 ]
even_item = [i for i in item if not(i % 2 == 0)]

for i in even_item:
    for j in range(0,MAX-i):
        if ans[j+i] > ans[j] + 1:
            ans[j+i] = ans[j] + 1

ans_ = copy.deepcopy(ans)

for i in odd_item:
    for j in range(0,MAX-i):
        if ans[j+i] > ans[j] + 1:
            ans[j+i] = ans[j]+1
for i in q:
    print(ans[i],ans_[i])
a,b = input().split()
if int(a) < int(b):
  print(0)
else
  print(int(a)-int(b))

### FIXED CODE ###

a,b = input().split()
if int(a) < int(b):
  print(0)
else:
  print(int(a)-int(b))
S = {'MON':6, 'TUE':5, 'WED':4, 'THU':3, 'FRI':2, 'STA':1, 'SUN':7}

s = str(input())
print = S[s]

### FIXED CODE ###

S = {'MON':6, 'TUE':5, 'WED':4, 'THU':3, 'FRI':2, 'SAT':1, 'SUN':7}

s = input()
print(S[s])
# https://atcoder.jp/contests/abc064/tasks/abc064_a

a = int(input().join())
if a % 4 == 0:
    print("YES")
else:
    print("NO")


### FIXED CODE ###

# https://atcoder.jp/contests/abc064/tasks/abc064_a
a = int(input().replace(' ', ''))
if a % 4 == 0:
    print("YES")
else:
    print("NO")
while True:
  a,op,c = map(str, input().split())
  a = int(a)
  c = int()
  if op == '?': 
    break
  if op == '+':
    print(a+b)
  if op == '-':
    print(a-b)
  if op == '*':
    print(a*b)
  if op == '/':
    print(a//b)


### FIXED CODE ###

while True:
  a,op,b = map(str, input().split())
  a = int(a)
  b = int(b)
  if op == '?': 
    break
  if op == '+':
    print(a+b)
  if op == '-':
    print(a-b)
  if op == '*':
    print(a*b)
  if op == '/':
    print(a//b)
a = input()
print("Yes" if a[1]==a[2]==a[3] or a[4]==a[2]==a[3], else "No")

### FIXED CODE ###

a = input()
print("Yes" if a[0]==a[1]==a[2] or a[1]==a[2]==a[3] else "No")
def fun(li):
  for i in li:
    if i%2 == 0:
      if i%3 == 0 or i%5 ==0:
        continue;
      else:
        return "DENIED"
return "APPROVED"      
n = int(input())
li = [int(num) for num in input().split(" ")]
print(fun(li))


### FIXED CODE ###

def fun(li):
  for i in li:
    if i%2 == 0:
      if i%3 == 0 or i%5 ==0:
        continue;
      else:
        return "DENIED"
  return "APPROVED"
n = int(input())
li = [int(num) for num in input().split(" ")]
print(fun(li))
N = int(input())
H = list(map(int,input().split()))
count = 1
for i in range(1,N):
  judge = 0
  for j in range(i):
    if(H[j]>H[I]):
      judge = judge +1
      break
  if(judge==0):
    count=count+1
print(count)
  
  
  
  

### FIXED CODE ###

N = int(input())
H = list(map(int,input().split()))
count = 1
for i in range(1,N):
  judge = 0
  for j in range(i):
    if(H[j]>H[i]):
      judge = judge +1
      break
  if(judge==0):
    count=count+1
print(count)
A,B=input().split()
max(A*B,A+B,A-B)


### FIXED CODE ###

A,B=map(int,input().split())
m=max(A+B,A-B,A*B)
print(m)
N,K=map(int,input().split())
A=list(map(int,input().split()))
from fractions import gcd
g=A[0]
for a in A[1:]:
    g=gcd(g,a)
print(['IMPOSSIBLE','POSSIBLE'][(g==1 or K%g==0) and max(A)>=K]

### FIXED CODE ###

N,K=map(int,input().split())
A=list(map(int,input().split()))
from fractions import gcd
g=A[0]
for a in A[1:]:
    g=gcd(g,a)
print(['IMPOSSIBLE','POSSIBLE'][(g==1 or K%g==0) and max(A)>=K])
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(10 ** 7)

h, w = map(int, readline().split())
a = [input() for i in range(h)]
q = []
dist = [[False] * h for _ in range(w)]
for i in range(h):
    for j in range(w):
        if a[i][j] == '#':
            q.append((i, j))
            dist[i][j] = True
test = [(0, 1), (0, -1), (1, 0), (-1, 0)]
cnt = -1
while q:
    cnt += 1
    qq = []
    for y, x in q:
        for dy, dx in test:
            yy, xx = y + dy, x + dx
            if xx < 0 or yy < 0 or xx > h - 1 or yy > w - 1 or dist[yy][xx]:
                continue
            else:
                dist[yy][xx] = True
                qq.append((yy, xx))
    q = qq
print(cnt)


### FIXED CODE ###

import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(10 ** 7)

h, w = map(int, readline().split())
a = [input() for i in range(h)]
q = []
dist = [[False] * w for _ in range(h)]
for i in range(h):
    for j in range(w):
        if a[i][j] == '#':
            q.append((i, j))
            dist[i][j] = True
test = [(0, 1), (0, -1), (1, 0), (-1, 0)]
cnt = -1
while q:
    cnt += 1
    qq = []
    for y, x in q:
        for dy, dx in test:
            yy, xx = y + dy, x + dx
            if xx < 0 or yy < 0 or xx > w - 1 or yy > h - 1 or dist[yy][xx]:
                continue
            else:
                dist[yy][xx] = True
                qq.append((yy, xx))
    q = qq
print(cnt)
#1:初期化
N = int(input())
a = []
r_append = a.append()
for i in range(N):
    r_append(list(map(int,input().split())))
dp = [[0]*3 for _ in range (N+1)]
#print(dp, sep="\n")
#print(a, sep="\n")

#2:初期値(元からゼロなので記述無し)

#3:dp実行部(貰うDP)
for i in range(1,N+1):
    for j in range(3):
        for k in range(3):
            if(j == k):
                continue
            dp[i][j] = max(dp[i][j], dp[i-1][k]+a[i-1][j]) #dpは[1]からだが，aは[0]からに注意

#4:出力
dpmax = 0
for i in range(3):
    dpmax= max(dp[N][i], dpmax)
#print(*dp, sep="\n")
print(dpmax)


### FIXED CODE ###

#1:初期化
N = int(input())
a = []
for i in range(N):
    a.append(list(map(int,input().split())))
dp = [[0]*3 for _ in range (N+1)]
#print(dp, sep="\n")
#print(a, sep="\n")

#2:初期値(元からゼロなので記述無し)

#3:dp実行部(貰うDP)
for i in range(1,N+1):
    for j in range(3):
        for k in range(3):
            if(j == k):
                continue
            dp[i][j] = max(dp[i][j], dp[i-1][k]+a[i-1][j]) #dpは[1]からだが，aは[0]からに注意

#4:出力
dpmax = 0
for i in range(3):
    dpmax= max(dp[N][i], dpmax)
#print(*dp, sep="\n")
print(dpmax)
n = int(input())
items = []
for i in range(n):
  items.append(int(input()))
result = sum(items)-max(items)/2
print(result[:len(result)-2])


### FIXED CODE ###

n = int(input())
items = []
for i in range(n):
  items.append(int(input()))
result = str(sum(items)-max(items)/2)
print(result[:len(result)-2])
N = int(input())
X = input()

def popcount(x):
    '''xの立っているビット数をカウントする関数
    (xは64bit整数)'''

    # 2bitごとの組に分け、立っているビット数を2bitで表現する
    x = x - ((x >> 1) & 0x5555555555555555)

    # 4bit整数に 上位2bit + 下位2bit を計算した値を入れる
    x = (x & 0x3333333333333333) + ((x >> 2) & 0x3333333333333333)

    x = (x + (x >> 4)) & 0x0f0f0f0f0f0f0f0f # 8bitごと
    x = x + (x >> 8) # 16bitごと
    x = x + (x >> 16) # 32bitごと
    x = x + (x >> 32) # 64bitごと = 全部の合計
    return x & 0x0000007f

for i in range(N):
  
  X_list = list(X)
  if X_list[i] == '0':
    X_list[i] = '1'
  else:
    X_list[i] = '0'
  
  X_str = ''.join(X_list)
  n = int(X_str, 2)
  fn = 0
  while n != 0:
    n = n % popcount(n)
    fn += 1
  
  print(fn)
  

### FIXED CODE ###

N = int(input())
X = input()

X_int = int(X, 2)
cnt1 = bin(X_int).count('1')
pcXi01 = cnt1 + 1
pcXi10 = cnt1 - 1
zero_idx = N + 5
if cnt1 == 1:
  for i in range(N):
    if X[i] == '1':
      zero_idx = i

if pcXi10 < 1:
  pcXi10 = 1
Xmod01 = X_int % pcXi01
Xmod10 = X_int % pcXi10

tmp01 = [1]
tmp10 = [-1]
for i in range(N - 1):
  tmp01.append(tmp01[i]*2 % pcXi01)
  tmp10.append(tmp10[i]*2 % pcXi10)

init_n = [0] * N
next_n = [0] * N
for i in range(N):
  if X[i] == '0':
    next_n[i] = (Xmod01 + tmp01[N - 1 - i]) % pcXi01
  else:
    next_n[i] = (Xmod10 + tmp10[N - 1 - i]) % pcXi10

for i in range(N):
  fn = 0
  if i == zero_idx:
    print(0)
    continue

  n = next_n[i]
  fn += 1
  while n != 0:
    n = n % bin(n).count('1')
    fn += 1
  
  print(fn)
import sys
import math
from copy import deepcopy
from collections import deque, defaultdict
from operator import mul
from functools import reduce
sys.setrecursionlimit(20000000)

# input = sys.stdin.readline


def main():
    N = int(input())
    Ps = list(map(int, input().split()))

    count = 0

    ans = []

    for i in range(len(Ps) - 1):
        if Ps[i] >= Ps[i+1]:
            count += 1
        else:
            ans.append(count)
            count = 0

        if i == len(Ps) - 2:
            ans.append(count)

    print(max(ans))


if __name__ == '__main__':
    main()


### FIXED CODE ###

import sys
import math
from copy import deepcopy
from collections import deque, defaultdict
from operator import mul
from functools import reduce
sys.setrecursionlimit(20000000)

# input = sys.stdin.readline


def main():
    N = int(input())
    Ps = list(map(int, input().split()))

    count = 0

    ans = [0]

    for i in range(len(Ps) - 1):
        if Ps[i] >= Ps[i+1]:
            count += 1
        else:
            ans.append(count)
            count = 0

        if i == len(Ps) - 2:
            ans.append(count)

    print(max(ans))


if __name__ == '__main__':
    main()
#include <bits/stdc++.h>
using namespace std;
int H, W;

int main() {
    cin >> H >> W;
    vector<vector<int>> a(H + 1, vector<int>(W + 1));
    for(int i = 0; i < W + 1; i++){
        a.at(H).at(i) = 0;
    }
    for(int j = 0; j < H; j++){
        string str;
        cin >> str;
        a.at(j).at(W) = 0;
        for(int i = 0; i < W; i++){
            if(str.at(i) == '.')
                a.at(j).at(i) = 1;
            else
                a.at(j).at(i) = 0;
        }
    }

    //横方向
    for(int j = 0; j < H; j++){
        int prev = 0;
        int start = 0;
        for(int i = 0; i < W + 1; i++){
            if (a.at(j).at(i) > 0){
                if(prev == 0){
                    start = i;
                    prev = 1;
                }
            }else{
                if(prev == 1){
                    int num = i - start;
                    for(int k = start; k < i; k++){
                        a.at(j).at(k) = num;
                    }
                    prev = 0;
                }
            }
        }
    }

    //縦方向
    for(int i = 0; i < W; i++){
        int prev = 1;
        int start = 0;
        for(int j = 0; j < H + 1; j++){
            if (a.at(j).at(i) > 0){
                if(prev == 0){
                    start = j;
                    prev = 1;
                }
            }else{
                if(prev == 1){
                    int num = j - start;
                    for(int k = start; k < j; k++){
                        a.at(k).at(i) += num - 1;
                    }
                    prev = 0;
                }
            }
        }
    }

    int ans = 0;
    for(int j = 0; j < H; j++){
        int m1 = *max_element(a.at(j).begin(), a.at(j).end());
        ans = max(ans, m1);
    }
    cout << ans << endl;
}

### FIXED CODE ###

import numpy as np
import sys


def get_data(stream):
    buf = b''
    b = stream.buffer.read(1)
    while b != b'\n':
        buf += b
        b = stream.buffer.read(1)
    H, W = map(int, buf.split())
    c = stream.buffer.read(H * (W + 1))
    arr = np.array(c.split())
    arr = np.frombuffer(arr, dtype='S1').reshape((H, W))
    return H, W, arr


def main():
    H, W, arr = get_data(sys.stdin)
    a = arr == b'.'
    L = np.empty((H, W), dtype='i8')
    R = np.empty((H, W), dtype='i8')
    T = np.empty((H, W), dtype='i8')
    B = np.empty((H, W), dtype='i8')
    T[0] = a[0]
    for i in range(1, H):
        T[i] = (T[i - 1] + 1) * a[i]
    B[-1] = a[-1]
    for i in range(H - 2, -1, -1):
        B[i] = (B[i + 1] + 1) * a[i]
    L[:, 0] = a[:, 0]
    for i in range(1, W):
        L[:, i] = (L[:, i - 1] + 1) * a[:, i]
    R[:, -1] = a[:, -1]
    for i in range(W - 2, -1, -1):
        R[:, i] = (R[:, i + 1] + 1) * a[:, i]

    print((T + B + L + R - 3).max())


if __name__ == "__main__":
    main()
import sys
import heapq, math
from itertools import zip_longest, permutations, combinations, combinations_with_replacement
from itertools import accumulate, dropwhile, takewhile, groupby
from functools import lru_cache
from copy import deepcopy

N = int(input())

d = {}
zeros = 0

def gcd(a, b):
    while b != 0:
        a, b = b, a % b

    return a

MOD = int(1e9) + 7
p = [1] * (N + 1)
for i in range(N):
    p[i + 1] = p[i] * 2 % MOD
    if a == b == 0:
        zeros += 1
        continue
    a, b = map(int, input().split())
    a, b = a // gcd(a, b), b // gcd(a, b)

    if a == 0:
        f, s = d.get((a, abs(b)), (0, 0))
        d[(a, abs(b))] = (f + 1, s)

    if b == 0:
        f, s = d.get((b, abs(a)), (0, 0))
        d[(b, abs(a))] = (f, s + 1)

    if a < 0 or b < 0:
        if a < 0:
            a, b = -a, -b
        f, s = d.get((abs(b), a), (0, 0))
        d[(abs(b), a)] = (f, s + 1)
    else:
        f, s = d.get((abs(a), abs(b)), (0, 0))
        d[(abs(a), abs(b))] = (f + 1, s)

ans = 1
for _, (f, s) in d.items():
    cnt = p[f] - 1
    cnt += p[s] - 1
    cnt += 1
    cnt %= MOD
    ans *= cnt
    ans %= MOD

ans -= 1
ans += zeros
print(ans)


### FIXED CODE ###

import sys
import heapq, math
from itertools import zip_longest, permutations, combinations, combinations_with_replacement
from itertools import accumulate, dropwhile, takewhile, groupby
from functools import lru_cache
from copy import deepcopy

N = int(input())

d = {}
zeros = 0

def gcd(a, b):
    while b != 0:
        a, b = b, a % b

    return a

MOD = int(1e9) + 7
p = [1] * (N + 1)
for i in range(N):
    p[i + 1] = p[i] * 2 % MOD
    a, b = map(int, input().split())
    if a == b == 0:
        zeros += 1
        continue
    a, b = a // abs(gcd(a, b)), b // abs(gcd(a, b))

    if a == 0:
        f, s = d.get((a, abs(b)), (0, 0))
        d[(a, abs(b))] = (f + 1, s)

    elif b == 0:
        f, s = d.get((b, abs(a)), (0, 0))
        d[(b, abs(a))] = (f, s + 1)

    elif (a < 0) ^ (b < 0):
        if a < 0:
            a, b = -a, -b
        f, s = d.get((abs(b), a), (0, 0))
        d[(abs(b), a)] = (f, s + 1)
    else:
        f, s = d.get((abs(a), abs(b)), (0, 0))
        d[(abs(a), abs(b))] = (f + 1, s)

ans = 1
for _, (f, s) in d.items():
    cnt = p[f] - 1
    cnt += p[s] - 1
    cnt += 1
    cnt %= MOD
    ans *= cnt
    ans %= MOD

ans -= 1
ans += MOD
ans += zeros
ans %= MOD
print(ans)
N,K=map(int,input().split())
a=[]
while K>0:
  d=int(input())
  b=list(map(int,input().split())
  a.extend(b)
  K=K-1
collection.counter(a)
print(N-len(a))

### FIXED CODE ###

import collections
N,K=map(int,input().split())
a=[]
d=[]
while K>0:
  K=K-1
  d.append(int(input()))
  b=list(map(int,input().split()))
  a.extend(b)
e=collections.Counter(a)
print(N-len(e))
from collections import defaultdict

d=defaultdict(list)

N=int(input())
for _ in range(N-1):
    a,b,c=map(int,input().split())
    d[a].append((b,c))
    d[b].append((a,c))

Q,K=map(int,input().split())

# Kを中心とした距離を求める
dists=[None]*(N+1)
isused=[False]*(N+1)
dists[K]=0
isused[K]=True

def dfs(n):
    for i,j in d[n]:
        if isused[i]:continue
        isused[i]=True
        dists[i]=dists[n]+j
        dfs(i)

dfs(K)
for _ in range(Q):
    x,y=map(int,input().split())
    print(dists[x]+dists[y])


### FIXED CODE ###

from collections import deque
n=int(input())
l=[[] for _ in [0]*n]
for _ in [0]*(n-1):
  a,b,c=map(int,input().split())
  l[a-1].extend([(b-1,c)])
  l[b-1].extend([(a-1,c)])

q,k=map(int,input().split())
dst=[0 for _ in [0]*n]
que=deque([])
v,p,d=k-1,-1,0
que.append((v,p,d))
while que:
  v,p,d=que.pop()
  dst[v]=d
  for i,j in l[v]:
    if i==p:continue
    que.append((i,v,d+j))

for _ in [0]*q:
  x,y=map(int,input().split())
  print(dst[x-1]+dst[y-1])
N,K = map(int,input().split())

D = set(map(int,input().split()))
A = {1,2,3,4,5,6,7,8,9,0}
N_list = [int(c) for c in str(N)]

use = sorted(list(A - D))

ans = [max(use) for i in range(len(N_list))]
mapans = map(str,ans)
x = int(''.join(mapans))
if N == x:
    print(x)
elif N > x:
    if use[0]!= 0:
        ans = [use[0] for i in range(len(N_list)+1)]
    else:
        ans.append(use[1])
        ans = [use[0] for i in range(len(N_list))]
    mapans = map(str,ans)
    x = int(''.join(mapans))
    print(x)
else:
    if use[0]!= 0:
        ans = [use[0] for i in range(len(N_list))]
    else:
        ans.append(use[1])
        ans = [use[0] for i in range(len(N_list)-1)]

    mapans = map(str,ans)
    x = int(''.join(mapans))
    j = 0
    i = 0
    while x < N:
        if ans[j] > N_list[j]:
            for k in range(len(ans)-j-1):
                ans[k] = min(use)
        elif ans[j] == N_list[j]:
            i = 0
            j+=1
        else:
            ans[j] = use[i]
            i += 1
        mapans = map(str,ans)
        x = int(''.join(mapans))
    print(x)


### FIXED CODE ###

N,K = map(int,input().split())

D = set(map(int,input().split()))
A = {1,2,3,4,5,6,7,8,9,0}
N_list = [int(c) for c in str(N)]

use = sorted(list(A - D))

ans = [max(use) for i in range(len(N_list))]
mapans = map(str,ans)
x = int(''.join(mapans))
if N == x:
    print(x)
elif N > x:
    if use[0]!= 0:
        ans = [use[0] for i in range(len(N_list)+1)]
    else:
        ans = [use[0] for i in range(len(N_list)+1)]
        ans[0] = use[1]

    mapans = map(str,ans)
    x = int(''.join(mapans))
    print(x)
else:
    if use[0]!= 0:
        ans = [use[0] for i in range(len(N_list))]
    else:
        ans = [use[0] for i in range(len(N_list))]
        ans[0] = use[1]

    mapans = map(str,ans)
    x = int(''.join(mapans))
    j = 0
    i = 0
    while x < N:
        if ans[j] > N_list[j]:
            for k in range(len(ans)-j-1):
                ans[k] = min(use)
        elif ans[j] == N_list[j]:
            i = 0
            j+=1
        else:
            i += 1
            ans[j] = use[i]
        mapans = map(str,ans)
        x = int(''.join(mapans))

    print(x)
H,W,M=map(int,input().split())
row_boms=[0 for i in range(H)]
col_boms=[0 for i in range(W)]

boms=[[0 for j in range(W)] for i in range(H)]
for i in range(M):
  h,w=map(int,input().split())
  boms[h-1][w-1]=1
  row_boms[h-1]+=1
  col_boms[w-1]+=1

row_max=max(row_boms)
col_max=max(col_boms)

rowmax_h=[]
colmax_w=[]
for i in range(H):
  if row_boms[i]==row_max:
    rowmax_h+=[i]
for i in range(W):
  if col_boms[i]==col_max:
    colmax_w+=[i]
rows=len(rowmax_h)
cols=len(colmax_w)
tf=0
for i in rowmax_h:
  for j in colmax_w:
    if boms[i][j]==0:
      tf=1
      break

if tf==1:
  print(row_max+col_max)
else:
  print(row_max+col_max-1)

### FIXED CODE ###

import math
N,X,T=map(int,input().split())
n=math.ceil(N/X)
print(n*T)
n,m=map(int,input().split())
l=0
r=n+1
for i in range(m):
    a,b=map(int,input().split())
    l=max(l,a)
    r=min(r,b)
    if l>r:
        print(0)
        sys.exit()
print(r-l+1)

### FIXED CODE ###

import sys

n,m=map(int,input().split())
l=0
r=n+1
for i in range(m):
    a,b=map(int,input().split())
    l=max(l,a)
    r=min(r,b)
    if l>r:
        print(0)
        sys.exit()
print(r-l+1)
n = int(input())
ss = []
cnt = 0

# for _ in range(n):
#     ss.append(input())

# for i, s1 in enumerate(ss[0:n-2+1]):
#     for s2 in ss[i + 1:n-1+1]:
#         # print(s1, s2)
#         if sorted(s1) == sorted(s2):
#             cnt += 1

for _ in range(n):
    ss.append(input())

map = {}
for s in ss:
    sorted_s = ''.join(sorted(s))
    if sorted_s in map.keys():
        map[sorted_s] += 1
    else:
        map[sorted_s] = 1

# print(map)

def factorial(n):
    x = 1
    if n > 0:
        x = n * factorial(n-1)
    return x

# あとはxC2の組み合わせの総数を求めれば良い

for n in map.values():
    if n == 1:
        continue
    cnt += factorial(n) // 2 * factorial(n-2)

print(cnt)

### FIXED CODE ###

n = int(input())
ss = []
cnt = 0

# for _ in range(n):
#     ss.append(input())

# for i, s1 in enumerate(ss[0:n-2+1]):
#     for s2 in ss[i + 1:n-1+1]:
#         # print(s1, s2)
#         if sorted(s1) == sorted(s2):
#             cnt += 1

for _ in range(n):
    ss.append(input())

map = {}
for s in ss:
    sorted_s = ''.join(sorted(s))
    if sorted_s in map.keys():
        map[sorted_s] += 1
    else:
        map[sorted_s] = 1


# map = {'a': 1, 'b': 2, 'c': 3, 'd': 4}
# map = {'a': 10 ** 5}  # maxテスト
# print(map)

# あとはxC2の組み合わせの総数を求めれば良い


for n in map.values():
    if n > 1:
        # cnt += factorial(n) // (2 * factorial(n-2))
        cnt += (n * (n - 1)) // 2
    # print(n)
    # print(cnt)

print(cnt)
import math

k, s = map(int, imput().split())

res = 0

for x in range(k+1):
    for y in range(k+1):
        if x+y < s:
            z = s - x - y
            res += 1

print(res)

### FIXED CODE ###

import math

k, s = map(int, input().split())

res = 0

for x in range(k+1):
    for y in range(k+1):
        z = s - x - y
        if 0 <= z <= k:
            res += 1

print(res)
inputs = input().split("\n")
N = int(inputs[0])
V = list(map(int, inputs[1].split(" ")))
C = list(map(int, inputs[2].split(" ")))
Z = 0
for v, c in zip(V, C):
    if v-c>0: Z += v-c
print(Z)

### FIXED CODE ###

N = int(input())
V = list(map(int, input().split(" ")))
C = list(map(int, input().split(" ")))
Z = 0
for v, c in zip(V, C):
    if v-c>0: Z += v-c
print(Z)
A, B, T = input()
ans = ((T + 0.5) // A) * B
print(ans)

### FIXED CODE ###

A, B, T  =  (int(_) for _ in input().split())
ans = (T + 0.5) // A
ans = int(ans * B )
print(ans)
import math
import numpy as np

n = int(input())
n_2 = int(math.sqrt(n + 1))   
div = x[n % x == 0]
ans = 10 ** 12
for i in div:
    j = (n // i) + i - 2
    ans = min(ans, j)
print(ans)

### FIXED CODE ###

import math
import numpy as np

n = int(input())
n_2 = int(math.sqrt(n) + 1)
x = np.arange(1, n_2)
div = x[n % x == 0]
ans = 10 ** 12
for i in div:
    j = (n // i) + i - 2
    ans = min(ans, j)
print(ans)
W,H,N=map(int,input().split(' '))
info = [[],[],[],[]] #min_x,max_x,min_y,max_y
for i in range(N):
  x,y,a=map(int,input().split(' '))
  info[a-1].append((x,y)[(a-1)//2])
print(max(min(info[1])-max(info[0]),0)*max(min(info[3])-max(info[2]),0))

### FIXED CODE ###

W,H,N=map(int,input().split(' '))
info = [[0],[W],[0],[H]] #min_x,max_x,min_y,max_y
for i in range(N):
  x,y,a=map(int,input().split(' '))
  info[a-1].append([x,y][(a-1)//2])
print(max(min(info[1])-max(info[0]),0)*max(min(info[3])-max(info[2]),0))