题解列表

摘要：### 代码如下 ~~~python a = [0] * 4 for i in input(): if i.isalpha(): a[0] += 1 e……

摘要：### 代码如下： ~~~python n,m = map(int,input().split()) d = {} for i in range(m+n): k,v = map(……

摘要：#### set() - 集合不会有重复元素，可以用来清理重复元素 - 集合是无序的，需要转成`list`然后用`sort()`排序 **二维数组排序** ~~~pytho……

摘要：解题思路:注意事项:参考代码:n, m = map(int, input().split())N = int(2e3+5)st1 = [[0] * N for _ in range(N)]st2 = ……

摘要：#### 线性筛法求质数 **代码示例** ~~~python def zs(n): p = [] ps = [True]*(n+1) for i in r……

摘要：### 深度优先搜索整个解空间即可 ![8345c6326c1b1b571020af27092b16e7_720](https://admin-hwj.oss-cn-beijing.al……

摘要：~~~python def main(): n = int(input()) arr = [list(map(int,input().split())) for i in ran……

摘要：~~~python arr = [list(map(int,input().split())) for i in range(3)] arr = [[arr[j][i] for j in rang……

摘要：~~~python def swap(L,x,y): tmp = L[x-1] L[x-1] = L[y-1] L[y-1] = tmp def main(): ……

摘要： ……