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全部文章（共16篇）

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: a = [0]*n a[0] = 0 a[1] = 1 a[2] = 1 for i in ran...

2025-08-02

0 23

题解 | 牛牛数数

n = int(input()) for i in range(1,n+1): if i%4 != 0 and '4' not in str(i): print(i)

2025-08-02

0 22

题解 | 数位之和

n=abs(int(input())) r = 0 while n !=0: r += n%10 n = n//10 print(r)

2025-08-02

0 18

题解 | 牛牛学数列5

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

2025-08-02

0 26

题解 | 牛牛学数列4

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

2025-08-02

0 23

题解 | 最大的差

import sys l1 = input() l2 = list(map(int,input().split())) print(max(l2)-min(l2))

2025-08-02

3 31

题解 | 牛牛学数列2

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

2025-08-02

0 22

题解 | 牛牛学数列

import sys import math i = int(input()) def func(i): r = 0 for j in range(1,i+1): r += (-1)**(j-1)*j print(r) func(i)

2025-08-02

0 21

题解 | 素数判断

import sys import math no = input() def isPrime(i): if i <= 1: return False for k in range(2,int(math.sqrt(i)+1)): # form...

2025-08-02

0 21

题解 | 多组数据a+b III

import sys for line in sys.stdin: a = line.split() if a[0] != '0' and a[1] != '0': print(int(a[0]) + int(a[1]))

2025-07-22

0 26