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全部文章（共158篇）

题解 | 神秘石像的镜像序列

print(' '.join(input().split()[:-1][::-1]))

2025-08-28

0 9

题解 | 二维斐波那契数列

n, m = map(int,input().split()) dp = [[0]*(m+1) for _ in range(n+1)] if m==1 or n==1: print(1) else: for i in range(1,n+1): for j in r...

2025-08-28

0 8

题解 | 牛牛学数列6

n = int(input()) if n==1: print(0) elif n==2 or n==3: print(1) else: dp = [0]*(n+1) dp[1], dp[2], dp[3] = 0, 1, 1 for i in range(4...

2025-08-28

0 10

题解 | 牛牛数数

n = int(input()) for i in range(1,n+1): if i%4==0 or '4' in str(i): continue else: print(i)

2025-08-28

0 10

题解 | 牛牛学数列5

n = int(input()) if n==1 or n==2: print(1) else: dp = [0]*(n+1) dp[1], dp[2] = 1, 1 for i in range(3,n+1): dp[i] = dp[i-1]+dp[...

2025-08-28

0 8

题解 | 牛牛学数列4

n = int(input()) ans = 0 for i in range(1,n+1): ans += sum(range(1,i+1)) print(ans)

2025-08-28

0 11

题解 | 牛牛学数列2

n = int(input()) ans = 0 for i in range(1,n+1): ans += 1/i print(f'{ans:.6f}')

2025-08-28

0 8

题解 | 牛牛学数列

n = int(input()) ans = 0 for i in range(1,n+1): ans += i*(-1)**(i-1) print(ans)

2025-08-28

0 9

题解 | 素数判断

def check(n):#判断是否为素数 if n == 1: return False for i in range(2, n): if n % i == 0: return False return True ...

2025-08-28

0 10

题解 | 四季

m = int(input()[-2:]) if 3<=m<=5: print('spring') elif 6<=m<=8: print('summer') elif 9<=m<=11: print('autumn') else: ...

2025-08-28

0 9