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17 changes: 17 additions & 0 deletions 이티지윤/11050_이항 계수 1.py
Original file line number Diff line number Diff line change
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import sys
input = sys.stdin.readline

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

array = [[0 for _ in range(n+1)] for _ in range(n+1)]

for i in range(n+1):
array[i][i] = 1
array[i][0] = 1

for i in range(2,n+1):
for j in range(1,n+1):
if array[i][j] != 1:
array[i][j] = array[i-1][j-1] + array[i-1][j]

print(array[n][k])
18 changes: 18 additions & 0 deletions 이티지윤/2579_계단 오르기.py
Original file line number Diff line number Diff line change
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import sys
input = sys.stdin.readline

n = int(input()) # 계단 개수
s = [int(input()) for _ in range(n)] # 계단 리스트
dp = [0]*(n) # dp 리스트

if len(s)<=2: # 계단 2개 이하
print(sum(s))

else: # 계단이 3개 이상일 때
dp[0] = s[0] # 첫번째 계단
dp[1] = s[0] + s[1] # 두번째 계단

for i in range(2,n): # 세번째 계단부터 dp점화식
dp[i] = max(dp[i-3]+s[i-1]+s[i], dp[i-2]+s[i])

print(dp[-1])