Harryxun/stf_run huggingface dataset:
n,k=map(int,input().split())
a = list(map(int, input().split()))

b = [(abs(i), 1 if i >= 0 else -1) for i in a]

b = sorted(b)
b = list(reversed(b))

p = 1
for i in range(k):
	p *= b[i][0] * b[i][1]

mod = int(1e9 + 7)

if p >= 0:
	print(p % mod)
else:
	# choice between replacing the last positive by the next negative
	# and replacing the last negative by the next positive
	lastP, nextP, lastN, nextN = -1, -1, -1, -1
	for i in range(k):
		if b[i][0] * b[i][1] >= 0:
			lastP = i
		if b[i][0] * b[i][1] <= 0:
			lastN = i
	for i in range(k, n):
		if b[i][0] * b[i][1] >= 0:
			nextP = i
		if b[i][0] * b[i][1] <= 0:
			nextN = i
	ans = -1e50
	if lastP != -1 and nextN != -1:
		ans = max(ans, -(p // b[lastP][0]) * b[nextN][0])
	if lastN != -1 and nextP != -1:
		ans = max(Ans, -(p // b[lastN][0]) * b[nextP][0])
	
	if ans >= 0:
		print(ans % mod)
	else:
		# tout le monde est negatif
		a = list(reversed(sorted(a)))
		p = 1
		for i in range(k):
			p *= a[i]
		print(p % mod)


### FIXED CODE ###

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

b = [(abs(i), 1 if i >= 0 else -1) for i in a]

b = sorted(b)
b = list(reversed(b))
mod = int(1e9 + 7)

def fp(x,y):
	res=1
	while y > 0:
		if y % 2 == 1:
			res *= x
		x *= x
		y //= 2
		x %= mod
		res %= mod
	return res

def inv(x):
	return fp(x,mod-2)

p = 1
signe = 1
for i in range(k):
	p *= b[i][0]
	p %= mod
	if b[i][0] == 0:
		signe = 0
	signe *= b[i][1]

if signe >= 0:
	print(p % mod)
else:
	# choice between replacing the last positive by the next negative
	# and replacing the last negative by the next positive
	lastP, nextP, lastN, nextN = -1, -1, -1, -1
	for i in range(k):
		if b[i][0] * b[i][1] >= 0:
			lastP = i
		if b[i][0] * b[i][1] <= 0:
			lastN = i
	for i in range(k, n):
		if b[i][0] * b[i][1] >= 0 and nextP==-1:
			nextP = i
		if b[i][0] * b[i][1] <= 0 and nextN==-1:
			nextN = i
	if (lastP!=-1 and nextN !=-1) and (lastN!=-1 and nextP!=-1):
		if b[nextN][0] * b[lastN][0] >= b[nextP][0] * b[lastP][0]:
			ans = p * inv(b[lastP][0]) * b[nextN][0]
			ans %= mod
			print(ans)
		else:
			ans = p * inv(b[lastN][0]) * b[nextP][0]
			ans %= mod
			print(ans)
	elif lastP!=-1 and nextN!=-1:
		ans = p * inv(b[lastP][0]) * b[nextN][0]
		ans %= mod
		print(ans)
	elif lastN!=-1 and nextP!=-1:
		ans = p * inv(b[lastN][0]) * b[nextP][0]
		ans %= mod
		print(ans)
	else:
		# tout le monde est negatif
		a = list(reversed(sorted(a)))
		p = 1
		for i in range(k):
			p *= a[i]
			p %= mod
		print(p)
a,b = map(int,input().split())
    if a != 1 and b != 1:
        if a > b :
            print("Alice")
        elif a < b:
            print("Bob")
        else:
            print("Draw")
    elif a == 1 and b != 1:
        print("Alice")
    elif a != 1 and b == 1:
        print("Bob")
    else:
        print("Draw")

### FIXED CODE ###

a,b = map(int,input().split())
if a != 1 and b != 1:
  if a > b :
   	  print("Alice")
  elif a < b:
      print("Bob")
  else:
      print("Draw")
elif a == 1 and b != 1:
      print("Alice")
elif a != 1 and b == 1:
      print("Bob")
else:
      print("Draw")
nums =intpi().split()
a = int(nume[0)
b = int(nums[1])
if a < b:
 print(a)
elif a > b:
 print("a < b")
eles:
 print('a == b')

### FIXED CODE ###

nums = input().split()
a = int(nums[0])
b = int(nums[1])
if a < b:
     print('a < b')
elif a > b:
     print('a > b')
else:
     print('a == b')
# A - Addition
N = int(input())
A = list(map(int, input().split()))
for i in range(N):
    k = (A[i] + k) % 2
k *= int(N!=1)
ans = ['YES', 'NO']
print(ans[k])

### FIXED CODE ###

# A - Addition

N = int(input())
A = list(map(int, input().split()))
k = 0
for i in range(N):
    k = (A[i] + k) % 2
k *= int(N!=1)
ans = ['YES', 'NO']
print(ans[k])
n, m = map(int, input().split())
lrd = []

MAX = 999999

p = [[] for _ in range(n)]
for i in range(m):
    l, r, d = map(int, input().split())
    lrd.append([l-1, r-1, d, 0])
    p[l-1].append(i)
    p[r-1].append(i)

if m <= 1:
    print('Yes')
    exit()

a = [MAX for _ in range(n)]

a[lrd[0][0]] = 0
temp = [lrd[0][0]]
next = []
t = 0
s = 0
max_a = 0
min_a = 0
while 1:
    next = []
    for x in temp:
        for y in p[x]:
            if lrd[y][0] == x:
                t = lrd[y][1]
                s = a[x] + lrd[y][2]
            else:
                t = lrd[y][0]
                s = a[x] - lrd[y][2]

            lrd[y][3] = 1
            if a[t] == MAX:
                a[t] = s
                next.append(t)
            elif a[t] != s:
                print('No')
                exit()

    if len(next) == 0:
        target = 0
        i = 0
        check = 0
        for i in range(m):
            if lrd[i][3] == 0:
                target = lrd[i][0]
                check = 1
        if check == 0:
            break
        a[target] = 0
        next = [target]

    temp = [] + list(set(next))

print('Yes')


### FIXED CODE ###

x = int(input())
a = int(input())
b = int(input())

x -= a

print(x % b)
n, k = map(int, input().split())
a = [0] + list(map(int, input().split()))

n += 1
ans = 0
m = dict()
for x in a:
    m[x] = 0
temp = 0
b = []
for i in range(min(n, k)):
    temp = (temp + a[i]) % k
    c = (temp - (i % k) + k) % k
    b.append(c)
    m[c] += 1

for i in range(k, n):
    x = i % k
    m[b[x]] -= 1
    temp = (temp + a[i]) % k
    c = (temp - (i % k) + k) % k
    b[x] = c
    m[c] += 1

print(ans)

### FIXED CODE ###

n, k = map(int, input().split())
a = [0] + list(map(int, input().split()))

n += 1
ans = 0
m = dict()
temp = 0
b = []
for i in range(min(n, k)):
    temp = (temp + a[i]) % k
    c = (temp - (i % k) + k) % k
    b.append(c)
    if c in m.keys():
        ans += m[c]
        m[c] += 1
    else:
        m[c] = 1

for i in range(k, n):
    x = i % k
    m[b[x]] -= 1
    temp = (temp + a[i]) % k
    c = (temp - (i % k) + k) % k
    b[x] = c
    if c in m.keys():
        ans += m[c]
        m[c] += 1
    else:
        m[c] = 1

print(ans)
inputarray = input().split(' ')
N = int(inputarray[0])
A = int(inputarray[1])
B = int(inputarray[2])
blue = 'b'
red = 'r'
ballcolumn = ''
for i in range(10):
    ballcolumn+=blue*A
    ballcolumn+=red*B
targetstring = ballcolumn[:N]
print(targetstring.count('b'))

### FIXED CODE ###

inputarray = input().split(' ')
N = int(inputarray[0])
A = int(inputarray[1])
B = int(inputarray[2])
blue = 'b'
red = 'r'
amari = N % (A+B)
if A >= amari: 
    countnum = N // (A+B) * A +amari
else:
    countnum = N // (A+B) * A +A
print(countnum)
n, x, m = map(int, input().split())

a = x
li = [a]
exists = dict()
for i in range(2, n + 1):
    a = a * a % m
    if a in exists:
        break
    li.append(a)
    exists[a] = i

ans = sum(li)
if i != n:
    loop, left = divmod(n - i + 1, i - exists[a])
    ans += loop * sum(li[exists[a]-1:]) + sum(li[exists[a]-1:exists[a]-1+left])
print(ans)


### FIXED CODE ###

n, x, m = map(int, input().split())

a = x
li = [a]
exists = dict()
i = 1
for i in range(2, n + 1):
    a = a * a % m
    if a in exists:
        break
    li.append(a)
    exists[a] = i

ans = sum(li)
if i != n:
    loop, left = divmod(n - i + 1, i - exists[a])
    ans += loop * sum(li[exists[a]-1:]) + sum(li[exists[a]-1:exists[a]-1+left])
print(ans)
n = int(input())

a_list = list(map(int, input().split()))
a_list.sort()
a_counter = {}
for a in a_list:
    if a in a_counter.keys():
        a_counter[a] += 1
    else:
        a_counter[a] = 1

data_error = False

if n % 2 == 0:
   for i in range(1, n, 2):
       if a_counter[i] != 2:
           data_error = True
else:
    for i in range(0, n, 2):
        if a_counter[i] != 2:
            if i == 0 and a_counter[0] == 1:
                continue
            data_error = True

if data_error:
    print(0)
else:
    print(2**(int(n/2)))


### FIXED CODE ###

n = int(input())

a_list = list(map(int, input().split()))
a_list.sort()
a_counter = {}
MOD = 10**9 + 7
for a in a_list:
    if a in a_counter.keys():
        a_counter[a] += 1
    else:
        a_counter[a] = 1

data_error = False

if n % 2 == 0:
    for i in range(1, n, 2):
        if i not in a_counter.keys():
            data_error = True
            break
        if a_counter[i] != 2:
            data_error = True
            break
else:
    for i in range(0, n, 2):
        if i not in a_counter.keys():
            data_error = True
        if a_counter[i] != 2:
            if i == 0 and a_counter[0] == 1:
                continue
            data_error = True
            break

if data_error:
    print(0)
else:
    ans = 2 ** (int(n / 2))
    ans %= MOD
    print(ans)
num_i, num_j = input().split()
num_i = int(num_i)
num_j = int(num_j)
inputs = [input() for i in range(num_i)]
x = []
for _ in inputs:
    for value in _:
        x.append(value)
x = np.array(x)
x = x.reshape(num_i, num_j)

count = 0
boolean = True
while (boolean):
    count += 1
    i_arr = []
    j_arr = []
    for i in range(num_i):
        for j in range(num_j):
            if (x[i][j] == "#"):
                i_arr.append(i)
                j_arr.append(j)
    for i, j in zip(i_arr, j_arr):
        if (i == 0) & (j == 0):
            x[1][0] = "#"
            x[0][1] = "#"
        elif (i == num_i - 1) & (j == num_j - 1):
            x[i - 1][j] = "#"
            x[i][j - 1] = "#"
        elif (i == num_i - 1) & (j == 0):
            x[i - 1][0] = "#"
            x[i][1] = "#"
        elif (i == 0) & (j == num_j - 1):
            x[1][j] = "#"
            x[0][j - 1] = "#"
        elif (i == 0):
            x[1][j] = "#"
            x[0][j - 1] = "#"
            x[0][j + 1] = "#"
        elif (j == 0):
            x[i - 1][0] = "#"
            x[i + 1][0] = "#"
            x[i][1] = "#"
        elif (i == num_i - 1):
            x[i - 1][j] = "#"
            x[i][j + 1] = "#"
            x[i][j - 1] = "#"
        elif (j == num_j - 1):
            x[i - 1][j] = "#"
            x[i + 1][j] = "#"
            x[i][j - 1] = "#"
        else:
            x[i - 1][j] = "#"
            x[i + 1][j] = "#"
            x[i][j - 1] = "#"
            x[i][j + 1] = "#"
    if len(set(list(x.flatten()))) == 1:
        print(count)
        boolean = False
    else:
        boolean = True

### FIXED CODE ###

from collections import deque

H, W = map(int, input().split())

# input black cells
black_cells = []

for h in range(H):
    line = list(input())
    for w in range(W):
        if line[w] == "#":
            black_cells.append(h * W + w)


# Graph
def r(p):
    q_list = []
    h = p // W
    w = p % W
    if h != 0:
        q_list.append(p - W)
    if h != H-1:
        q_list.append(p + W)
    if w != 0:
        q_list.append(p - 1)
    if w != W-1:
        q_list.append(p + 1)
    return q_list


queue = deque(black_cells)
d = [10000] * (H * W)
for i in black_cells:
    d[i] = 0

# dijkstra
while len(queue) > 0:
    p = queue.popleft()
    for q in r(p):
        if d[q] > d[p] + 1:
            d[q] = d[p] + 1
            queue.append(q)

print(max(d))
n,*a=map(int,open(0).read().split())
a,b=a[:n],a[n:]
for a,b in zip(a,b):
    if a==b:continue
    if b>a:
        print(-1)
        exit()
    if a-b<b:
        print(-1)
        exit()
1/0

### FIXED CODE ###

from scipy.sparse.csgraph import floyd_warshall
n,*a=map(int,open(0).read().split())
a,b=a[:n],a[n:]
for x,y in zip(a,b):
    if x==y:continue
    if y>x:
        print(-1)
        exit()
    if x-y<=y:
        print(-1)
        exit()
M=max(a)
d=[]
for k in range(M-1,-1,-1):
    s=set(a)
    e=[[0]*(M+1)for _ in range(M+1)]
    for i in range(M+1):e[i][i]=1
    for i in d+list(range(k,0,-1)):
        t=s.copy()
        for x in s:
            e[x][x%i]=1
            t|={x%i}
        s=t
    c=floyd_warshall(e)
    for x,y in zip(a,b):
        if c[x,y]==float('inf'):
            d+=k+1,
            break
print(sum(2**k for k in d))
listVowels=["a","e","i","o","u"]
isVowel=input() in vowelslist
if isVowel:
    print("vowel")
else:
    print("consonant")

### FIXED CODE ###

c=input()
listVowels=["a","e","i","o","u"]
isVowel=c in listVowels
if isVowel:
    print("vowel")
else:
    print("consonant")
S = input()
X = S[0]
ans = 0
while 1:    
    for i in range(S):
        if S[i] != X:
            ans += 1
            X =S[i]
            S = S[i:]
            break
    else:
        break
print(ans)
    


### FIXED CODE ###

S = input()
X = S[0]
ans = 0
while 1:    
    for i in range(len(S)):
        if S[i] != X:
            ans += 1
            X =S[i]
            S = S[i:]
            break
    else:
        break
print(ans)
a, b, c = map(int,input().split())
if a == 7:
 if b == c ==5:
  print("Yes")
 else:
  print("No")
elif a == 5:
 if b ==7 and c == 5:
  print("Yes")
 ellif b == 5 and c ==7:
  print("Yes")
 else:
  print("No")
else:
 print("No")

### FIXED CODE ###

ABC = list(map(int,input().split()))
ABC.sort()
if ABC[0] == 5 and ABC[1] == 5 and ABC[2] == 7:
 print("YES")
else:
 print("NO")
int i = 1
while true:
 x = int(input())
 if(x == 0):
  break
 print('case {0}: {1}'.format(i,x))
 i++


### FIXED CODE ###

i = 1
while True:
 x = int(input())
 if x == 0:
  break
 print('Case %d: %d' % (i,x))
 i +=1
N = int(input())

def sum_digits(n, m):
    r = 0
    while n:
        r = r + n % m
        m = n // m
    return r

ans = float("inf")
for i in range(N+1):
    ans = min(ans, sum_digits(i, 6) + sum_digits(N-i, 9))

### FIXED CODE ###

N = int(input())

if N >= 1000:
    print("ABD")
else:
    print("ABC")
a, b, c, k = map(int, input().split())
li_card = []
for i in range(a):
  li_card.append(1)
for i in range(b):
  li_card.append(0)
for i in range(c):
  li_card.append(-1)

li_select = li_card[0:k]

print(sum(li_select))

### FIXED CODE ###

s = input()
t = input()
len_t = len(t)
if t[0:len_t-1] == s:
  print("Yes")
else:
  print("No")
a = int(input())
b = int(input())
ls = [1,2,3]
del ls[a-1]
del ls[b-1]
print(max(ls))

### FIXED CODE ###

a =sorted( [int(input()) for i in range(2)])
print("1" if a == [2,3] else "2" if a == [1,3] else "3")
a, b = [temp for temp in input().split()]
print(a * b, (a + b) * 2)

### FIXED CODE ###

a, b = [int(temp) for temp in input().split()]
print(a * b, (a + b) * 2)
S = input().split()
T = input().split()
print(S + T)

### FIXED CODE ###

import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
 
S,T = read().decode('utf-8').split()
 
answer = T + S
print(answer)
#C
N,M=map(int,input().split())
re=[0 for i in range(N+1)]
P=[0 for i in range(N+1)]
x=0
y=0
for i in range(M):
    p,S=input().split()
    p=int(p)
    if re[p]=="AC":
        continue
    elif S=="WA":
        P[p]+=1
    elif S=="AC":
        re[p]="AC"
        y+=1
for i in range(1,N+1):
    if re[p]=="AC":
        x+=P[p]
print(y,x)

### FIXED CODE ###

#C
N,M=map(int,input().split())
re=[0 for i in range(N+1)]
P=[0 for i in range(N+1)]
x=0
y=0
for i in range(M):
    p,S=input().split()
    p=int(p)
    if re[p]=="AC":
        continue
    elif S=="WA":
        P[p]+=1
    elif S=="AC":
        re[p]="AC"
        y+=1
for i in range(1,N+1):
    if re[i]=="AC":
        x+=P[i]
print(y,x)
while True:
????????(m, f, r) = [int(i) for i in input().split()]
??????????if m == f == r == -1:
????????????????break
????????total = m + f
????????if m == -1 or f == -1 or total < 30:
??????????????print('F')
????????elif total < 50 and r < 50:
??????????????print('D')
????????elif total < 65:
??????????????print('C')
????????elif total < 80:
??????????????print('B')
????????else:
????????????????print('A')
????????????????????

### FIXED CODE ###

while True:
    (m, f, r) = [int(i) for i in input().split()]
    if m == f == r == -1:
        break
 
    s = m + f
 
    if m == -1 or f == -1 or s < 30:
        print('F')
    elif s < 50 and r < 50:
        print('D')
    elif s < 65:
        print('C')
    elif s < 80:
        print('B')
    else:
        print('A')
a,b,c = map(int, input().split())
a == 1 or a == 0
b == 1 or b == 0
c == 1 or c == 0

print('a + b + c')

### FIXED CODE ###

a,b,c = map(int, input().strip())
0 <= a <= 1
0 <= b <= 1
0 <= c <= 1

print(a + b + c)
a, b, c, d = map(int, input.split())
print(max(a*b, c*d))

### FIXED CODE ###

a, b, c, d = map(int, input().split())
print(max(a*b, c*d))
p = int(input())
a = list(map(int, input().split()))

list_size = p-1

f_list = [1] * list_size
f_r_list = [1] * list_size

for i in range(list_size - 1):
	f_list[i + 1] = int((f_list[i] * (i + 2)) % p)

f_r_list[-1] = pow(f_list[-1], p - 2, p)

for i in range(2, list_size + 1):
	f_r_list[-i] = int((f_r_list[-i + 1] * (list_size + 2 - i)) % p)

def comb(n, r):
	if n < r:
		return 0
	elif n == 0 or r == 0 or n == r:
		return 1
	else:
		return (((f_list[n - 1] * f_r_list[n - r - 1]) % p) * f_r_list[r - 1]) % p 

pows = [[1] for x in range(p)]
for i in range(p):
	for _ in range(p-1):
		pows[i].append((pows[i][-1] * i) % p)

ans = [0 for _ in range(p)]
for i, x in enumerate(a):
	if x == 0:
		continue
	ans[0] += 1
	ans[0] %= p
	for j in range(p):
		ans[j] -= pows[p-i][p-1-j] * comb(p-1, j)
		ans[j] %= p

print(*ans)

### FIXED CODE ###

p = int(input())
a = list(map(int, input().split()))

list_size = p-1

f_list = [1] * list_size
f_r_list = [1] * list_size

for i in range(list_size - 1):
	f_list[i + 1] = int((f_list[i] * (i + 2)) % p)

f_r_list[-1] = pow(f_list[-1], p - 2, p)

for i in range(2, list_size + 1):
	f_r_list[-i] = int((f_r_list[-i + 1] * (list_size + 2 - i)) % p)

def comb(n, r):
	if n < r:
		return 0
	elif n == 0 or r == 0 or n == r:
		return 1
	else:
		return (((f_list[n - 1] * f_r_list[n - r - 1]) % p) * f_r_list[r - 1]) % p 

pows = [[1] for x in range(p)]
for i in range(p):
	for _ in range(p-1):
		pows[i].append((pows[i][-1] * i) % p)

ans = [0 for _ in range(p)]
for i, x in enumerate(a):
	if x == 0:
		continue
	ans[0] += 1
	ans[0] %= p
	for j in range(p):
		ans[j] -= pows[(p-i)%p][p-1-j] * comb(p-1, j)
		ans[j] %= p

print(*ans)
def main():
  N, Q = map(lambda i: int(i), input().split(' '))
  vertices = [[] for i in range(N)]
  points = [0] * N
  for n in range(N - 1):
    a, b = map(lambda i: int(i), input().split(' '))
    vertices[a - 1].append(b - 1)
  # print(vertices)
  for q in range(Q):
    p, x = map(lambda i: int(i), input().split(' '))
    add(points, vertices, p - 1, x)
  print(' '.join(list(map(lambda p: str(p), points))))

def add(points, vertices, i, x):
  points[i] += x
  if len(vertices[i]) > 0:
    for v in vertices[i]:
        add(points, vertices, v, x)

main()


### FIXED CODE ###

import sys

sys.setrecursionlimit(10 ** 9)

def main():
  input = sys.stdin.buffer.readline
  read = sys.stdin.buffer.read
  # Nがノードの数, Qが操作回数
  N, Q = map(int, input().split())
  ABPX = list(map(int, read().split()))
  AB = iter(ABPX[:N+N-2])
  PX = iter(ABPX[N+N-2:])

  parents = [None] * N
  childrens = [set() for _ in range(N)]
  relations = [[] for _ in range(N)]
  shown = set()

  for a, b in zip(AB, AB):
    a -= 1
    b -= 1
    relations[a].append(b)
    relations[b].append(a)

  points = [0] * N
  result = [0] * N

  for p, x in zip(PX, PX):
    p -= 1
    points[p] += x

  def solve(parent, relations, points, result):
    result[parent] += points[parent]
    shown.add(parent)
    for child in relations[parent]:
      if child not in shown:
        result[child] += result[parent]
        solve(child, relations, points, result)
      
  solve(0, relations, points, result)
  print(*result)

if __name__ == "__main__":
  main()
a,b=map(int,input().split())
if a!=3 and b!=3:
  c=3
elif a!=2 and b!=2:
  c=2
else:
  c=1
finally:
  print(c)

### FIXED CODE ###

a=int(input())
b=int(input())
if a!=3 and b!=3:
  print(3)
elif a!=2 and b!=2:
  print(2)
else:
  print(1)
N = int(sys.stdin.readline())
d = list(map(int, input().split()))

recover = []

c = 0
for i in d:
    c += 1
    recover.append(i * sum(d[c:N]))

print(sum(recover))


### FIXED CODE ###

import sys
N = int(sys.stdin.readline())
d = list(map(int, input().split()))

recover = []

c = 0
for i in d:
    c += 1
    recover.append(i * sum(d[c:N]))

print(sum(recover))
dp=[0]+[1<<20]*10000
n=int(input())
for i in range(1,n+1):
    try:a=int(input())
    except:break
    for j in range(i//2+1):
        dp[j],dp[i-j]=map(min,[(dp[j],dp[i-j]+a),(dp[i-j],dp[j]+a)])
print(dp[n//2])

### FIXED CODE ###

dp=[0]+[1<<20]*10000
n=int(input())
for i in range(1,n):
    a=int(input())
    for j in range(i//2+1):
        if dp[j]>dp[i-j]+a:dp[j]=dp[i-j]+a
        if dp[i-j]>dp[j]+a:dp[i-j]=dp[j]+a
print(dp[n//2])
c = []
for i in range(3):
    c.append(list(int(x) for x in input().split()))
c[1][0] -= c[0][0]
c[2][0] -= c[0][0]
if c[1][1] == c[0][1] + c[1][0] and c[1][2] == c[0][2] + c[1][0] and c[2][1] == c[0][1] + c[2][0] and c[2][2] == c[0][2] + c[2][0]:
    print(‘Yes’)
else:
    print(‘No’)

### FIXED CODE ###

c = []
for i in range(3):
    c.append(list(int(x) for x in input().split()))
c[1][0] -= c[0][0]
c[2][0] -= c[0][0]
if c[1][1] == c[0][1] + c[1][0] and c[1][2] == c[0][2] + c[1][0] and c[2][1] == c[0][1] + c[2][0] and c[2][2] == c[0][2] + c[2][0]:
    print('Yes')
else:
    print('No')
n = int(input().rstrip())
a = [int(v) for v in input().rstrip().split()]

count = 0

for v in a:
    t = v
    while t % 2 == 0:
        t = t / 2
        count += 1

print(count)


### FIXED CODE ###

a, b = [int(v) for v in input().rstrip().split()]

if (a <= 8) and (b <= 8):
    print("Yay!")
else:
    print(":(")
import argparse

def make_parser():
    parser = argparse.ArgumentParser()

    parser.add_argument('A', type=int)
    parser.add_argument('B', type=int)
    parser.add_argument('K', type=int)

    args = parser.parse_args()

    return args

def main():
    args = make_parser()

    takahashi_cookie = args.A
    aoki_cookie = args.B
    iteration = args.K

    while(0 < iteration):
        if(1 <= takahashi_cookie):
            takahashi_cookie -= 1

        elif(1 <= aoki_cookie):
            aoki_cookie -= 1

        else:
            pass

        iteration -= 1

    print(str(takahashi_cookie) + ' ' + str(aoki_cookie))

if __name__ == "__main__":
    main()


### FIXED CODE ###

A,B,K = map(int, input().split())

takahashi_cookie = A
aoki_cookie = B
iteration = K

if 0 <= takahashi_cookie - iteration:
  takahashi_cookie -= iteration
 
elif 0 <= aoki_cookie + takahashi_cookie - iteration:
  aoki_cookie = aoki_cookie + takahashi_cookie - iteration
  takahashi_cookie = 0

else:
  takahashi_cookie = 0
  aoki_cookie = 0

print(str(takahashi_cookie) + ' ' + str(aoki_cookie))
h,w,m=map(int, input().split())
r = [0]*10
c = [0]*10

for i in range(m):
    x,y=map(int, input().split())
    r[x]+=1
    c[y]+=1

print(max(r)+max(c))

### FIXED CODE ###

h,w,m=map(int, input().split())
r = [0]*max(h,w)
c = [0]*max(h,w)
l=[]

for i in range(m):
    x,y=map(int, input().split())
    r[x-1]+=1
    c[y-1]+=1
    l.append([x,y])

cm = max(c)
rm = max(r)
ci = [i for i, x in enumerate(c) if x == cm]
ri = [i for i, x in enumerate(r) if x == rm]
ans = cm + rm

cnt = 0
#print(l,ci,ri)
for i in range(m):
    if r[l[i][0]-1] == rm and c[l[i][1]-1] ==cm:
        cnt += 1

if cnt == len(ci)*len(ri):
    print(int(ans)-1)
else:
    print(int(ans))
for testcase in range(int(input())):
	D,T,S=map(int,input().split())
	speed=D/T
	if speed>=S:
		print('Yes')
	else:
		print('No')	

### FIXED CODE ###

D,T,S=map(int,input().split())
t=D/S
if t<=T:
  print('Yes')
else:
  print('No')
A, B, C = map(int, input().split())
if A - B >= C:
　　print(0)
else:
　　print(C - A + B)

### FIXED CODE ###

A, B, C = map(int, input().split())
if A - B >= C:
    print(0)
else:
    print(C - A + B)
ais = [int(raw_input()) for oo in range(raw_input())]#n = raw_input()
seen = set([])
u = 0
while(u!= 1 or u not in seen):
	seen.add(u)
	u = ais[u] - 1

print len(seen) if u == 1 else -1


### FIXED CODE ###

ais = [int(raw_input()) for oo in range(int(raw_input()))]
seen = set([])
u = 0
while((u!= 1) and (u not in seen)):
	seen.add(u)
	u = ais[u] - 1

print len(seen) if u == 1 else -1
o=list(input())
e=list(input())

for i in range(len(o)):
  print(o[i],end="")
  print(e[i],end="")

### FIXED CODE ###

o=list(input())
e=list(input())+[""]
for x,y in zip(o,e):print(x+y,end="")