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题解 | 小红的排列构造①

n = int(input()) if n == 1 or n == 2: print('-1') else: print('3 2 1',end=' ') for i in range(4,n+1): print(i,end=' ')

2026-01-01

1 8

题解 | 构造三角形

t = int(input()) for i in range(t): a, b, c, d = map(int,input().split()) print(b,c,c)

2026-01-01

1 8

题解 | 构造数独

n, k = map(int,input().split()) for i in range(n): for j in range(i): print('0',end=' ') print(k,end=' ') for j in range(n-i-1): ...

2026-01-01

1 7

题解 | 构造数对

x = int(input()) for i in range(2,x+1): if x % i == 0: print(x,i) exit() print('-1')

2026-01-01

1 7

题解 | 茉茉的密码

n = int(input()) l = [] for i in range(n): a = input() l.append(a) for i in range(ord('a'),ord('z')+1): i = chr(i) g = 0 for j in ...

2026-01-01

1 7

题解 | 构造C的歪

a, b = map(int,input().split()) print(2*b-a)

2026-01-01

1 6

题解 | 植树节

n = int(input()) dic = {} c = 0 for i in range(n): a, d = map(int,input().split()) dic[a] = dic.get(a,0) + 1 dic[d+1] = dic.get(d+1,0) - 1...

2025-12-31

1 10

题解 | 牛牛与切割机

n = int(input()) l = list(map(int,input().split())) s1 = l[0] * sum(l[1:]) s2 = sum(l[:-1]) * l[-1] print(min(s1,s2))

2025-12-30

1 9

题解 | 舞萌时间到！

dic = {'P':3,'p':2,'G':1,'g':0,'m':0} n = input() c = int(input()) fen = [] for i in n: f = dic[i] fen.append(f) p = [0] * (len(n)+1) for i in...

2025-12-30

1 9

题解 | 【模板】静态区间和（前缀和）

n, c = map(int,input().split()) l = list(map(int,input().split())) p = [0] * (n+1) for i in range(n): p[i+1] = p[i] + l[i] for i in range(c): ...

2025-12-30

1 11