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baekjoon 20251209

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songyc macbook 2025-12-09 22:49:01 +09:00
parent 4aa7d1cdd3
commit 9a663e093f
1 changed files with 26 additions and 0 deletions
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code_study/Baekjoon/python/1562.py Normal file
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N = int(input())
MOD = 10**9
dp = [[[0]*1024 for _ in range(10)] for _ in range(N+1)]
for i in range(1,10) :
dp[1][i][1<<i] = 1
for length in range(1,N) :
for last_num in range(10) :
for bit_state in range(1024) :
if dp[length][last_num][bit_state] == 0 : continue
next_num = last_num - 1
if 0 <= next_num <= 9 :
next_bit_state = bit_state | (1<<next_num)
dp[length+1][next_num][next_bit_state] += dp[length][last_num][bit_state]
dp[length+1][next_num][next_bit_state] %= MOD
next_num = last_num + 1
if 0 <= next_num <= 9 :
next_bit_state = bit_state | (1<<next_num)
dp[length+1][next_num][next_bit_state] += dp[length][last_num][bit_state]
dp[length+1][next_num][next_bit_state] %= MOD
print(sum(dp[N][i][1023] for i in range(10))%MOD)