www.jungol.co.kr/bbs/board.php?bo_table=pbank&wr_id=1174&sca=2040

import math
def is_prime_number(x):
  for i in range(2, int(math.sqrt(x))+1):
    if x%i == 0:
      return False
  return True

m = int(input())

for _ in range(0,m):
  i = int(input())
  u = i+1
  d = i-1
  while True:
    flag = False
    p = ""
    if is_prime_number(d):
      flag = True
      p += str(d) + " "
      #print(d)

    if is_prime_number(u):
      flag = True
      p += str(u) + " "
      #print(u)
    

    if flag == True:
      print(p)
      break
    
    u+=1
    d-=1
  

555 : 배열1 - 자가진단1

li = list(input().split())
print(li)
for i in li:
  print(i, end="")

556 : 배열1 - 자가진단2

li = []
for i in range(1, 11):
  li.append(i)

for i in li:
  print(i,end=" ")

557 : 배열1 - 자가진단3

li = input().split()

for i,a in enumerate(li):
  if i == 0 or i == 3 or i == 6:
    print(a, end=" ")

li = input().split()

for i in range(0, len(li)):
  if i == 0 or i == 3 or i == 6:
    print(li[i], end=" ")

558 : 배열1 - 자가진단4

li = list(map(int, input().split()))

for a in range(len(li)-2, -1, -1):
  print(li[a], end=" ")

li = list(map(int, input().split()))
li = li[:-1]
li.reverse()
print(li)

634 : 반복제어문3 - 자가진단2

a = int(input())

for i in range(1,a+1):
  for _ in range(0, i):
    print("*", end="")
  print()

547 : 반복제어문2 - 자가진단7

for i in range(2,7):
  for j in range(0,5):
    print(i + j, end = " ")
  print()

548 : 반복제어문2 - 자가진단8

for i in range(2,5):
  for j in range(1,6):
    print("%-2d * %2d = %3d  " %(i, j, i*j), end = " ")
  print()

133 : 반복제어문2 - 형성평가4

n = int(input())
cnt = 0
sum = 0
for _ in range(0,n):
  a = int(input())
  sum += a
  cnt += 1

print("%.2f" %(sum/cnt))

n = int(input())
li = list(map(int, input().split()))
cnt = 0
sum = 0
for a in li:
  sum += a
  cnt += 1

print("%.2f" %(sum/cnt))

137 : 반복제어문2 - 형성평가8

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

for i in range(1, a+1):
  for j in range(1, b+1):
    print("%d" %(i*j), end = " ")
  print(" ");

138 : 반복제어문2 - 형성평가9

a = int(input())

for i in range(1, a + 1):
  for j in range(1, a + 1):
    print("(%d, %d)" %(i,j), end = " ")
  print()

139 : 반복제어문2 - 형성평가A

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

for i in range(1, 10):
  for j in range(a, b-1, -1):
    print("%-2d * %2d = %2d" %(j, i, j*i), end = " ")
  print()