1️⃣ 블랙잭

• 2798번
• 문제분석

N, M = map(int, input().split())
num = list(map(int, input().split()))
result = []

for a in range(N-2):
  for b in range(a+1, N-1):
    for c in range(b+1, N):
      temp = num[a] + num[b] + num[c]
      if temp <= M:
        result.append(temp)

result.sort()
print(result[-1])

2️⃣ 분해합

• 2231번
• 문제분석

N = int(input())

for num in range(N):
  placeValueSum = sum( map(int, str(num)) )
  if num + placeValueSum == N:
    print(num)
    break
  if num == N-1:
    print(0)
    break

3️⃣ 덩치

• 7568번
• 문제분석

N = int(input()); guys = []
for i in range(N):
  person = list(map(int, input().split()))
  guys.append(person)

for x,y in guys:
  up = 0
  for p,q in guys:
    if x < p and y < q:
      up += 1
  print(up+1)

4️⃣ 체스판 다시 칠하기

• 1018번
• 문제분석

# 시작점 = start_y(세로), start_x(가로)
# 8*8체스판에서 가장 상단의 맨왼쪽 색상 = first(리스트)
def chess(start_y, start_x, first, second):   # (2)
  count = 0

  # 홀수번, (2)-1
  for y in range(start_y, start_y+8, 2):  
    index = 0
    for x in range(start_x, start_x+8):
      if board[y][x] != first[index]:
        count += 1
      index += 1

  # 짝수번, (2)-2
  for y in range(start_y+1, start_y+8, 2):
    index = 0
    for x in range(start_x, start_x+8):
      if board[y][x] != second[index]:
        count += 1
      index += 1

  return count

N, M = map(int, input().split())
B = "BWBWBWBW"
W = "WBWBWBWB"
board = []
for i in range(N):
  board.append( input() )

B_first = []; W_first = []
for i in range(0, N-8+1):   # (1)
  for j in range(0, M-8+1):
    B_first.append( chess(i,j,B,W) )  # (2)
    W_first.append( chess(i,j,W,B) )  # (2)

result = B_first + W_first   # (3)
print( min(result) )

5️⃣ 영화감독 숌

• 1436번
• 첫번째 시도