Harryxun/sft_time huggingface dataset:
### BUGGY CODE ###

#! /usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fenc=utf-8
#

"""
AGC025 B
"""

import itertools
from functools import reduce

cut = 998244353


n, a, b, k = map(int, input().split())


def modInverse(a, b, divmod=divmod):
    r0, r1, s0, s1 = a, b, 1, 0
    while r1 != 0:
        q, rtmp = divmod(r0, r1)
        stmp = s0-q*s1
        r0, s0 = r1, s1
        r1, s1 = rtmp, stmp
    return s0 % b


def GCD(a, b):
    r0, r1 = a, b
    while r1 != 0:
        r0, r1 = r1, r0 % r1
    return r0


fact = [1]
tmp = 1
for i in range(1, n+1):
    tmp = tmp*i % cut
    fact.append(tmp)


def binom(nn, kk):
    return ((fact[nn]*modInverse(fact[kk], cut) % cut)*modInverse(fact[nn-kk], cut)) % cut


a, b = max(a, b), min(a, b)
gcdab = GCD(a, b)
ahat, bhat = a//gcdab, b//gcdab
flag = False
for i in range(0,bhat+1):
    if (k-i*a) % b == 0:
        iinit = i
        flag = True
        break

if not flag:
    print(0)
    exit()

ans = 0
for i in range(iinit, min(n+1, k//a+1), bhat):
    ib, bmod = divmod(k-i*a, b)
    if bmod == 0 and ib <= n:
        ans = (ans+binom(n, i)*binom(n, ib)) % cut

print(ans)



### FIXED CODE ###

#! /usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fenc=utf-8
#

"""
AGC025 B
"""

import itertools
from functools import reduce

cut = 998244353


n, a, b, k = map(int, input().split())


def modInverse(a, b, divmod=divmod):
    r0, r1, s0, s1 = a, b, 1, 0
    while r1 != 0:
        q, rtmp = divmod(r0, r1)
        s0, s1 = s1, s0-q*s1
        r0, r1 = r1, rtmp
    return s0 % b


# def modInverse2(a, b, divmod=divmod):
#     b2 = b-2
#     tmp0 = a
#     tmp1 = 1
#     while b2 != 0:
#         if b2 & 0b1:
#             tmp1 = tmp1*tmp0
#         tmp0 = tmp0*tmp0 % b
#         b2 = b2 >> 1
#     return(tmp1 % b)


def GCD(a, b):
    r0, r1 = a, b
    while r1 != 0:
        r0, r1 = r1, r0 % r1
    return r0


binom = [1, n]
tmp = n
for i in range(1, n):
    tmp = (tmp*(n-i) % cut)*modInverse(i+1, cut) % cut
    binom.append(tmp)


a, b = max(a, b), min(a, b)
gcdab = GCD(a, b)
ahat, bhat = a//gcdab, b//gcdab
flag = False
for i in range(0, bhat+1):
    if (k-i*a) % b == 0:
        iinit = i
        flag = True
        break


if not flag:
    print(0)
    exit()

ans = 0
for i in range(iinit, min(n+1, k//a+1), bhat):
    ib, bmod = divmod(k-i*a, b)
    if bmod == 0 and ib <= n:
        ans = (ans+binom[i]*binom[ib]) % cut

print(ans)
### BUGGY CODE ###

def get_input():
    N = int(input())
    numbers = []
    for str in input().split():
        numbers.append(int(str))
    return N, numbers

def DPsolve(N, numbers):
    count = 0
    dp = [[10**10 for i in range(len(numbers))] for j in range(len(numbers))]
    for i in range(N):
        for j in range(N-i):
            if j == 0:
                dp[i][j] = numbers[i]
            else:
                dp[i][j] = dp[i][j-1] + numbers[i+j]
            if dp[i][j] == 0:
                count += 1
    return dp, count


if __name__ == '__main__':
    N, numbers = get_input()
    dp, count = DPsolve(N, numbers)
    print(count)

### FIXED CODE ###

def get_input():
    N = int(input())
    numbers = [int(i) for i in input().split()]
    return N, numbers

def DPsolve(N, numbers):
    count = 0
    dp = [[1 for i in range(len(numbers))] for j in range(len(numbers))]
    for i in range(N):
        for j in range(N-i):
            if j == 0:
                dp[i][j] = numbers[i]
            else:
                dp[i][j] = dp[i][j-1] + numbers[i+j]
            if dp[i][j] == 0:
                count += 1
    return dp, count

if __name__ == '__main__':
    N, numbers = get_input()
    s = [0]
    for i in range(N):
        s.append(s[-1] + numbers[i])
    s.sort()
    count = 1
    result = 0
    for i in range(N):
        if(s[i] == s[i+1]):
            count += 1
        else:
            result += count * (count -1 ) // 2
            count = 1
    result += count * (count -1 ) // 2
    print(result)
### BUGGY CODE ###

count = 0
K, S = map(int, input().split())
for x in range(K+1):
    for y in range(K+1):
        for z in range(K+1):
            if x + y + z == S:
                count += 1
print(count)

### FIXED CODE ###

count = 0
K, S = map(int, input().split())
for x in range(K+1):
    for y in range(K+1):
        if 0 <= S-x-y <= K:
            count += 1

print(count)
### BUGGY CODE ###

from collections import deque

S = input().rstrip('\r\n')
S_list = deque(S)
Q = int(input())
for _ in range(Q):
    query = input().rstrip('\r\n')
    t, f, c = '', '', ''
    if len(query) == 1:
        t = query
    else:
        t, f, c = query.split(' ')
    if t == '1':
        S_list.reverse()
    else:
        if f == '1':
            S_list.appendleft(c)
        else:
            S_list.append(c)
print(''.join(S_list))

### FIXED CODE ###

from collections import deque

S = input().rstrip('\r\n')
S_list = deque(S)
is_reverse = False

Q = int(input())
for _ in range(Q):
    query = input().rstrip('\r\n')
    t, f, c = '', '', ''
    if len(query) == 1:
        t = query
    else:
        t, f, c = query.split(' ')
    if t == '1':
        is_reverse = not is_reverse
    else:
        if f == '1':
            if is_reverse:
                S_list.append(c)
            else:
                S_list.appendleft(c)
        else:
            if is_reverse:
                S_list.appendleft(c)
            else:
                S_list.append(c)
if is_reverse:
    S_list.reverse()
print(''.join(S_list))
### BUGGY CODE ###

from collections import deque

n = int(input())
ops = [tuple(input().split()) for i in range(n)]

ary = deque([])


def insert(ary, x):
    ary.appendleft(x)


def delete(ary, x):
    try:
        ary.remove(x)
    except ValueError:
        pass


def delete_first(ary):
    ary.popleft()


def delete_last(ary):
    ary.pop()


def operate(ary, op):
    cmd = op[0]

    if cmd == 'insert':
        x = int(op[1])
        insert(ary, x)
    elif cmd == 'delete':
        x = int(op[1])
        delete(ary, x)
    elif cmd == 'deleteFirst':
        delete_first(ary)
    elif cmd == 'deleteLast':
        delete_last(ary)


[operate(ary, op) for op in ops]
print(' '.join([str(_) for _ in ary]))



### FIXED CODE ###

import sys
from collections import deque

n = int(input())
ary = deque([])

for line in sys.stdin:
    op = line.strip().split()
    cmd = op[0]

    if cmd == 'insert':
        x = op[1]
        ary.appendleft(x)

    elif cmd == 'delete':
        x = op[1]
        if x in ary:
            ary.remove(x)

    elif cmd == 'deleteLast':
        ary.pop()

    else:
        ary.popleft()

print(*ary)
### BUGGY CODE ###

n = int(input())
mod = pow(10, 9) + 7
import functools
import operator
prod = functools.partial(functools.reduce, operator.mul)
l = [i for i in range(1, n+1)]
print(prod(l)%mod)

### FIXED CODE ###

n = int(input())
mod = pow(10, 9) + 7
ans = 1
for i in range(1, n+1):
    ans *= i
    ans %= mod

print(ans)
### BUGGY CODE ###

import numpy as np
S = input().replace('LR', 'L,R').replace('RL', 'R,L').split(',')
ans = []
for i in range(len(S)//2):
    
    r = len(S[2*i])
    l = len(S[2*i+1])
    
    if (r+l) % 2 == 0:
        nums = [(r+l)//2] * 2
    else:
        diff = r - l
        if diff > 0:
            if r % 2 == 0:
                nums = [(r+l-1)//2, (r+l-1)//2+1]
            else:
                nums = [(r+l-1)//2+1, (r+l-1)//2]
        else:
            if l % 2 == 0:
                nums = [(r+l-1)//2+1, (r+l-1)//2]
            else:
                nums = [(r+l-1)//2, (r+l-1)//2+1]
    ans.append([0]*(r-1))
    ans.append(nums)
    ans.append([0]*(l-1))
    
print(*sum(ans, []))

### FIXED CODE ###

import numpy as np
S = input()
n = len(S)
rl_li = []
for i in range(n-1):
    if S[i]+S[i+1]=='RL':
        rl_li.append(i) 

ans = [0] * n
rl_idx = 0
for i in range(n):
    rl = rl_li[rl_idx]
    distance = abs(i - rl)
    
    if distance % 2 == 0:
        ans[rl] += 1
    else:
        ans[rl+1] += 1
    
    if i == n-1:
        break
        
    if S[i] == 'L' and S[i+1] == 'R':
        rl_idx += 1

print(*ans)
### BUGGY CODE ###

S=(input())
Q=int(input())
cnt_re=0
for i in range(Q):
    q=list(input().split())
    if q[0]=='1':
        cnt_re+=1
    else:
        tmp=cnt_re%2
        tmpq=q[1]
        if ((tmpq=='1')&(tmp==0)) | ((tmpq=='2')&(tmp==1)):
            S=q[2]+S
        else:
            S=S+q[2]

if cnt_re%2==1:
    print(S[::-1])
else:
    print(S)

### FIXED CODE ###

S=(input())
Q=int(input())
cnt_re=0
s=''
for i in range(Q):
    q=list(input().split())
    if q[0]=='1':
        cnt_re+=1
    else:
        if (int(q[1])+cnt_re)%2==1:
            s=s+q[2]
        else:
            S=S+q[2]
if cnt_re%2==1:
    print(S[::-1]+s)
else:
    print(s[::-1]+S)
### BUGGY CODE ###

N = int(input())
A = []
r = 0
for i in range(N):
  As = list(map(int, input().split()))
  A.append(As)
  r += sum(As)
#print(r)
G = [[-1]*N for i in range(N)]
for i in range(N):
  for j in range(N):
    ok = False
    for k in range(N):
      if A[i][j] > A[i][k]+A[k][j]:
        print(-1)
        exit()
      if A[i][j] == A[i][k]+A[k][j] and k != i and k != j:
        ok = True
    if ok:
      r -= A[i][j]
r = r//2
print(r)


### FIXED CODE ###

N = int(input())
A = []
for i in range(N):
  As = list(map(int, input().split()))
  A.append(As)
r = 0
for i in range(N):
  for j in range(i+1, N):
    ok = False
    for k in range(N):
      if A[i][j] > A[i][k]+A[k][j]:
        print(-1)
        exit()
      if A[i][j] == A[i][k]+A[k][j] and k != i and k != j:
        ok = True
    if not(ok):
      r += A[i][j]
print(r)
### BUGGY CODE ###

N = 100000
g = [[] for i in range(N)] 
  
# To check if the vertex  
# has been visited or not 
vis = [False for i in range(N)] 
  
# To store if vertex is reachable 
# from source or not 
good = [False for i in range(N)] 
  
def ADD_EDGE(u, v): 
  
    g[u].append(v) 
  
# Function to find all good vertices 
def dfs1(v): 
  
    good[v] = True
    for to in g[v]: 
        if not good[to]: 
            dfs1(to) 
  
# Function to find cnt of 
# all unreachable vertices 
def dfs2(v): 
      
    global cnt 
    vis[v] = True
    cnt += 1
    for to in g[v]: 
        if not vis[to] and not good[to]: 
            dfs2(to) 
  
# Function to return   
# the minimum edges required 
def Minimum_Edges(): 
  
    global vis, cnt 
      
    # Find all vertices reachable 
    # from the source 
    dfs1(x) 
  
    # To store all vertices  
    # with their cnt value 
    val = [] 
  
    for i in range(0, n):  
  
        # If vertex is bad i.e. not reachable 
        if not good[i]: 
            cnt = 0
            vis = [False for i in range(N)] 
  
            # Find cnt of this vertex 
            dfs2(i) 
            val.append((cnt, i)) 
  
    # Sort all unreachable vertices  
    # in non-decreasing order of 
    # their cnt values 
    val.sort(reverse = True) 
  
    # Find the minimum number of edges 
    # needed to be added 
    ans = 0
    for it in val:  
        if not good[it[1]]:  
            ans += 1
            dfs1(it[1]) 
  
    return ans 
  
# Driver code 
if __name__ == "__main__": 
  
    # Number of nodes and source node 
    n, m = map(int, input().split())
    x = 0
  
    # Add edges to the graph
    for i in range(m):
        u, v = map(int, input().split())
        ADD_EDGE(u, v)
  
    print(Minimum_Edges())


### FIXED CODE ###

import sys
input = sys.stdin.readline
 
n,m=map(int,input().split())
d={i+1:[] for i in range(n)}
for i in range(m):
    x,y=map(int,input().split())
    d[x].append(y)
    d[y].append(x)
 
visit=set()
ans= 0 
for i in range(1,n+1):
    if i not in visit:
        ans+=1
        stack = [i]
        while stack:
            c=stack.pop()
            visit.add(c)
            for i in d[c]:
                if i not in visit:
                    stack.append(i)
print(ans-1)
### BUGGY CODE ###

n,m=map(int,input().split())
a=[]
for i in range(m):
  a.append(int(input()))
b=[0 for x in range(n+1)]
b[0]=1
for i in range(n-1):
  if i+1 not in a:
    b[i+1]+=b[i]%(10**9+7)
  if i+2 not in a:
    b[i+2]+=b[i]%(10**9+7)
 
if n not in a:
  b[n]+=b[n-1]%(10**9+7)
 
print(b[n]%(10**9+7))

### FIXED CODE ###

n,m=map(int,input().split())
a=[]
a = set(int(input()) for _ in range(m))
#for i in range(m):
#  a.append(int(input()))
b=[0 for x in range(n+1)]
b[0]=1
for i in range(1,n+1):
  if i in a:
    continue
  x=b[i-1]
  if i>1:x+=b[i-2]
  b[i]=x
print(b[n]%(10**9+7))
### BUGGY CODE ###

def main():
    import sys
    input = sys.stdin.readline
    H, W = [int(x) for x in input().strip().split()]
    Ch, Cw = [int(x)-1 for x in input().strip().split()]
    Dh, Dw = [int(x)-1 for x in input().strip().split()]
    M = [0 for _ in range(H)]
    for h in range(H):
        M[h] = list(input().strip())
        # print(M[h])
    ans = 0
    q = set([(Ch, Cw)])
    M[Ch][Cw] = '#'
    dhdw = [(1, 0), (0, 1), (-1, 0), (0, -1)]
    while True:
        newq = set()
        while q:
            q_ = set()
            for h, w in q:
                # print('({}, {}) = {}'.format(h, w, ans))
                if h == Dh and w == Dw:
                    print(ans)
                    return True
                newq.add((h, w))
                for dh, dw in dhdw:
                    if 0 <= h+dh < H and 0 <= w+dw < W:
                        if M[h+dh][w+dw] == '#':
                            continue
                        q_.add((h+dh, w+dw))
                        M[h+dh][w+dw] = '#'
            q = q_

        if newq:
            for h, w in newq:
                lh = - min(2, h)
                hh = min(3, H - h) 
                for dh in range(lh, hh):
                    lw = - min(2, w)
                    hw = min(3, W - w)
                    for dw in range(lw, hw):
                        if M[h+dh][w+dw] == '.':
                            q.add((h+dh, w+dw))
                            M[h+dh][w+dw] = '#'
        # for h in range(H):
        #     print(M[h])
        if len(q):
            ans += 1
        else:
            print(-1)
            return True

if __name__ == '__main__':
    main()

### FIXED CODE ###

def main():
    import sys
    input = sys.stdin.readline
    H, W = [int(x) for x in input().strip().split()]
    Ch, Cw = [int(x)-1 for x in input().strip().split()]
    Dh, Dw = [int(x)-1 for x in input().strip().split()]
    M = [W for _ in range(H)]
    for h in range(H):
        M[h] = list(input().strip())
        # print(M[h])
    ans = 0
    q = set([(Dh, Dw)])
    while True:
        nq = set()
        while q:
            q_ = set()
            for h, w in q:
                # print('({}, {}) = {}'.format(h, w, ans))
                if h == Ch and w == Cw:
                    print(ans)
                    return True
                M[h][w] = '#'
                nq.add((h, w))
                for dh, dw in [(1, 0), (0, 1), (-1, 0), (0, -1)]:
                    if 0 <= h+dh < H and 0 <= w+dw < W:
                        if M[h+dh][w+dw] == '.':
                            q_.add((h+dh, w+dw))
                            M[h+dh][w+dw] = '#'
            q = q_

        if nq:
            for h, w in nq:
                for dh in range(-2, 3):
                    for dw in range(-2, 3):
                        if 0 <= h+dh < H and 0 <= w+dw < W:
                            if M[h+dh][w+dw] == '.':
                                q.add((h+dh, w+dw))
        # for h in range(H):
        #     print(M[h])
        if len(q):
            ans += 1
        else:
            print(-1)
            return True

if __name__ == '__main__':
    main()
### BUGGY CODE ###

A, B, C, D = [int(s) for s in input().split()]
turn = 0
while True:
  if A <= 0 and C > 0:
    print("No")
  elif A > 0 and C <= 0:
  	print("Yes")
  
  if turn == 0:
    A -= D
    turn = 1
  else:
    C -= B
    turn = 0

### FIXED CODE ###

A, B, C, D = [int(s) for s in input().split()]
turn = 0
while A > 0 and C > 0:
  if turn == 0:
    C -= B
    turn = 1
  else:
    A -= D
    turn = 0
if A > 0:
  print("Yes")
else:
  print("No")
### BUGGY CODE ###

import sys

A, B, K = [int(num) for num in input().split()]

if A + B == K:
    print(0, 0)
    sys.exit(0)

if K > A:
    K = K - A
    A = 0

while K:
    if A > 0:
        A -= 1
        K -= 1
        continue
    if B > 0:
        B -= 1
        K -= 1
        continue
print(A, B)


### FIXED CODE ###

import sys

A, B, K = [int(num) for num in input().split()]

if A + B <= K:
    A = 0
    B = 0
    print(A, B)
    sys.exit(0)

if A > K:
    A = A - K
    print(A, B)
    sys.exit(0)
else:
    K = K - A
    A = 0

if B > K:
    B = B - K
    print(A, B)
    sys.exit(0)
else:
    B = 0
    print(A, B)
### BUGGY CODE ###

def solve():
    N, W = map(int, input().split())
    weight = [0 for i in range(N)]
    value = [0 for i in range(N)]
    for i in range(N):
        weight[i], value[i] = map(int, input().split())
    MAX_VALUE = sum(value)
    dp = [float('inf') for i in range(MAX_VALUE + 1)]
    dp[0] = 0

    for i in range(N):
        wi = weight[i]
        vi = value[i]
        for v in range(MAX_VALUE, -1, -1):
            _v = v + vi
            _w = dp[v] + wi
            if _v > MAX_VALUE: continue
            if _w > W: continue
            if dp[_v] <= _w: continue
            dp[_v] = _w
    for i in range(MAX_VALUE, -1, -1):
      if dp[i] <= W: return i
    return 0

print(solve())


### FIXED CODE ###

def solve():
    N, W = map(int, input().split())
    weight = [0 for i in range(N)]
    value = [0 for i in range(N)]
    for i in range(N):
        weight[i], value[i] = map(int, input().split())
    dp = [W + 1 for i in range(N * 1000 + 1)]
    dp[0] = 0
    V = 0

    for i in range(N):
        wi = weight[i]
        vi = value[i]
        for v in range(V, -1, -1):
            w = dp[v] + wi
            if dp[v + vi] <= w: continue
            dp[v + vi] = w
        V += vi

    for i in range(V, -1, -1):
      if dp[i] <= W: return i
    return 0

print(solve())
### BUGGY CODE ###

import itertools

n = int(input())
l = list(map(int,input().split()))


a = list(itertools.combinations(l, 3))
b = []

for i in a:
    b.append(tuple(sorted(i)))

c = list(set(b))

count = 0

for i in c:
    if i[0] < i[1] + i[2] and i[1] < i[0] + i[2] and i[2] < i[0] + i[1]:
        count += 1

print(count)        

### FIXED CODE ###

from bisect import bisect_left

N = int(input())
L = list(map(int, input().split()))

L.sort()
result = 0
for i in range(N - 2):
    for j in range(i + 1, N - 1):
        result += bisect_left(L, L[i] + L[j]) - j - 1
print(result)
### BUGGY CODE ###

import numpy as np
n = int(input())
a = [int(input()) for i in range(n)]
cnt = [0 for i in range(max(a))]

for ai in a:
  cnt[ai-1] += 1
  
print( (np.array(cnt) % 2).sum())

### FIXED CODE ###

from collections import Counter
n = int(input())
a = Counter([int(input()) for i in range(n)])

cnt = 0
for k, v in a.items():
  if v % 2 == 1:
    cnt += 1
print(cnt)
### BUGGY CODE ###

import sys
readline = sys.stdin.readline
write = sys.stdout.write
flush = sys.stdout.flush

# クエリ: "? x1 x2" を出力
def query(x1):
    print(x1)
    flush()
    # ジャッジから返される値を取得
    return readline().split()

n = int(input())
l = 0
r = n-1
mid = r // 2
re = [None] * n
re[0] = query(0)
if re[0] == "Vacant":
  exit()
re[mid] = query(mid)
while re[mid] != "Vacant":
  if re[l] == re[mid]:
    if (mid - l) % 2:
      r = mid
    else:
      l = mid
  else:
    if (mid - l) % 2:
      l = mid
    else:
      r = mid
  mid = (l + r) // 2
  re[mid] = query(mid)
exit()


### FIXED CODE ###

import sys

n = int(input())
l = 0
r = n-1
mid = r // 2
re = [None] * n
print(0, flush=True)
re[0] = input()
if re[0] == "Vacant":
  sys.exit()
print(n-1, flush=True)
re[n-1] = input()
if re[n-1] == "Vacant":
  sys.exit()
print(mid, flush=True)
re[mid] = input()
while re[mid] != "Vacant":
  if re[l] == re[mid]:
    if (mid - l) % 2:
      r = mid
    else:
      l = mid
  else:
    if (mid - l) % 2:
      l = mid
    else:
      r = mid
  mid = (l + r) // 2
  print(mid, flush=True)
  re[mid] = input()
else:
  sys.exit()
### BUGGY CODE ###

n = int(input())
a =[int(i)  for i in input().split()]
b = sum(a) // 2

ans = 10**20

for i in range(1,n):
    c = sum(a[:i])
    d = sum(a[i:])
    if abs(c-d) < ans:
        ans = abs(c-d)
    
print(ans)

### FIXED CODE ###

n = int(input())
a =[int(i)  for i in input().split()]
z = sum(a)
ans = 10**20
c = 0

for i in range(n-1):
    c += a[i]
    z -= a[i]
    if abs(c-z) < ans:
        ans = abs(c-z)
    
print(ans)
### BUGGY CODE ###

import math
n,m=map(int,input().split())
a=list(map(int,input().split()))

for i in range(m):
  a[a.index(max(a))]=math.floor(max(a)/2)
     
print(sum(a))


### FIXED CODE ###

import heapq as hq
n,m=map(int,input().split())
a=[-int(x) for x in input().split()]
hq.heapify(a)
for i in range(m):
    x=hq.heappop(a)
    x=-x//2
    hq.heappush(a,-x)
 
print(sum(a)*-1)
### BUGGY CODE ###

N, K=map(int, input().split())
A=list(map(int, input().split()))
for i in range(K,N):
    if i==K:
        a=1
        b=1
        for j in range(K):
            a*=A[j]
            b*=A[j+1]
    else:
        a=b
        b=b/A[i-K]*A[i]
    if a<b: print('Yes')
    else: print('No')

### FIXED CODE ###

N, K=map(int, input().split())
A=list(map(int, input().split()))
for i in range(K,N):
    if A[i-K]<A[i]: print('Yes')
    else: print('No')
### BUGGY CODE ###

N,K =  map(int,input().split())
if K == 1 or N%K == 0:
    print(0)
    exit()
S = set()
S.add(N)
for x in range(N):
    c = abs(N-K)
    if N == c:
        break
    N = abs(N-K)
    S.add(N)
print(min(S))

### FIXED CODE ###

N,K =  map(int,input().split())
T = N%K
L = [T,abs(T-K)]
print(min(L))
### BUGGY CODE ###

N, M = map(int, input().split())
L, R = map(int, input().split())
l1 = list(range(L, R+1))

if M > 1:
    for i in range(1, M):
        L, R = map(int, input().split())
        l2 = list(range(L, R+1))
        l1 = list(set(l1)&set(l2))
print(len(l1))

### FIXED CODE ###

N, M = map(int, input().split())
start = []
end = []
for i in range(M):
    L, R = map(int, input().split())
    start.append(L)
    end.append(R)
start_max = max(start)
end_min = min(end)
print(max(0, end_min - start_max + 1))
### BUGGY CODE ###

N,A,B= map(int,input().split())
ans = 0
count = 0
while count<=N:
    for i in range(A-1):
        ans += 1
        count += 1
        for j in range(B-1):
            count += 1

print(ans)

### FIXED CODE ###

n,a,b=map(int,input().split())
k=n//(a+b)
mod=n%(a+b)
ans=a*k
if mod >=a:
    ans +=a
else:
    ans +=mod
print(ans)
### BUGGY CODE ###

mod = 10**9 + 7

def comb(n, k):
    x, y = 1, 1
    k = min(k, n-k)
    for i in range(k):
        x *= n - i
        y *= i + 1
    return x*pow(y, mod-2, mod) % mod

N, M, K = map(int, input().split())
print((sum(i*(N-i)*M**2 for i in range(N))+sum(i*(M-i)*N**2 for i in range(M)))*comb(N*M-2, K-2) % mod)

### FIXED CODE ###

mod = 10**9 + 7

def comb(n, k):
    x, y = 1, 1
    k = min(k, n-k)
    for i in range(k):
        x *= n - i
        x %= mod
        y *= i + 1
        y %= mod
    return x*pow(y, mod-2, mod) % mod

N, M, K = map(int, input().split())
print((sum(i*(N-i)*M**2 for i in range(N))+sum(i*(M-i)*N**2 for i in range(M)))*comb(N*M-2, K-2) % mod)