题解 | N阶楼梯上楼问题
N阶楼梯上楼问题
https://www.nowcoder.com/practice/c978e3375b404d598f1808e4f89ac551
def lamp(n):
dp = [0] * (n+1)
dp[0] = 1
dp[1] = 1
# dp[2] = 2
for i in range(2, n+1):
dp[i] = dp[i-1] + dp[i-2]
return dp[n]
n = int(input())
res = lamp(n)
print(res)
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