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30009번: 포지션 제로 ↗

Solutions

Python 3
198 B | 198 chars
N = int(input())
X, Y, R = map(int, input().split())

a = b = 0

for i in range(N):
  K = int(input())
  
  if X - R == K or X + R == K:
    b += 1
  elif X - R < K < X + R:
    a += 1
print(a, b)