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题解 | 二维斐波那契数列

n, m = map(int, input().split()) mod = 10 ** 9 + 7 p = 1 <= n, m <= 10 ** 3 a = [[0] * (m + 1) for _ in range(n + 1)] a[1][1] = 1 if p: for ...

2025-11-03

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题解 | 牛牛学数列6

n=int(input()) p=1<=n<=20 a=[0]*(n+1) a[1],a[2],a[3]=0,1,1 if p: for i in range(4,n+1):a[i]=a[i-3]+2*a[i-2]+a[i-1] print(a[n])

2025-11-03

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题解 | 牛牛数数

n=int(input()) p=1<=n<=10**5 if p: for i in range(1,n+1): p1=i%4!=0 p2='4' not in str(i) if p1*p2:print(i) else:prin...

2025-10-30

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题解 | 数位之和

n=abs(int(input())) p=n<=10**9 print(sum(int(i) for i in f'{n}' if p else'超出范围')) # 此题提交后报错，提示的输入数值已超10的9次方的范围，答案未将描述中n的范围考虑进去

2025-10-30

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题解 | 牛牛学数列5

n=int(input()) p=1<=n<=46 a,b=1,1 if p: for i in range(n-2):a,b=b,a+b print(1 if n<3 else b) else:print('请满足1≦n≦46的正整数要求')

2025-10-30

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题解 | 牛牛学数列4

n=int(input()) p=1<=n<=100 print(n*(n+1)*(n+2)//6 if p else'请满足1≦n≦100的正整数')

2025-10-30

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题解 | 多组输入a+b II

T = int(input()) p = T in range(1, 101) if p: for i in range(T): a, b = map(int, input().split()) p1 = all(x in range(101) for x i...

2025-10-29

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题解 | 多组数据a+b III

while 1: a,b=map(int,input().split()) p=a==b==0 if p:break print(a+b)

2025-10-29

1 28

题解 | 素数判断

T=int(input()) p=1<=T<=10 if p: for i in range(T): p3=0 n=int(input()) p1=1<=n<=10**5 p2=n==1 ...

2025-10-29

1 40

题解 | 牛牛学数列

n=int(input()) p=1<=n<=100 if p:print(sum(i if i%2!=0 else -i for i in range(1,n+1))) else:print('请满足1≦n≦100的正整数')

2025-10-29

1 30