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题解 | 数字统计

l, r = map(int, input().split()) ci = 0 for i in range(l, r + 1): i = str(i) for j in i: if j == '2': ci += 1 print(ci)

2025-12-20

1 12

题解 | 大水题

n = str(input()) while len(n) > 1: s = 0 for i in n: s = s + int(i) n = str(s) print(n)

2025-12-20

1 9

题解 | 数位五五

a, b = map(int, input().split()) g = 0 for i in range(a,b+1): i = str(i) s = 0 for j in i: s = s + int(j) if s % 5 == 0: ...

2025-12-20

1 11

题解 | 小乐乐计算函数

a, b, c = map(float, input().split()) m = max((a+b), b, c)/(max(a, (b+c), c) + max(a, b, (b+c))) print(f'{m:.2f}')

2025-12-20

1 11

题解 | 简写单词

l = input().split() s = '' for i in l: i = ord(i[0]) if 97 <= i <= 122: i = i - 32 i = chr(i) s = s + str(i) print(s)

2025-12-20

1 12

题解 | 小乐乐走台阶

def f(n): if n == 1: return 1 elif n == 2: return 2 else: return f(n-1) + f(n-2) n = int(input()) print(f(n))

2025-12-20

0 9

题解 | 字符串操作

n, m = map(int, input().split()) z = input() z_list = list(z) for _ in range(m): l, r, c1, c2 = input().split() l = int(l) - 1 r = int(r) ...

2025-12-19

1 12

题解 | 牛牛的digit

x, i = input().split() i = int(i) print(x[-i:])

2025-12-19

1 12

题解 | 牛牛的排列数

n, m = map(int, input().split()) if n < m: print('0') else: shang = 1 xia = 1 cha = n - m for i in range(1,n+1): shang ...

2025-12-19

1 12

题解 | 牛牛逆序输出

print(input()[::-1])

2025-12-19

0 12