for(inti = 1; i <= n; i++) for(intj = i; j <= n; j++) dp[i][j][1] = 1; 接下来考虑递推关系式,我们知道dp[i][j][k]一定是从dp[x][y][k - 1]拓展出来的,我们不妨考虑考虑,当x <= i && y >= j时dp[x][y][k - 1]一定能拓展到dp[i][j][k],因为i代表a字符串...
题目链接:http://codeforces.com/problemset/problem/1288/C C. Two Arrays time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given two integersnn andmm. Calculate the number of pairs of arrays(a,b)(a,b) such that: the lengt...
You are given two integer arrays of length NN, A1A1 and A2A2. You are also given QQ queries of 4 types: 1 k l r x: set Aki:=min(Aki,x)Aki:=min(Aki,x) for each l≤i≤rl≤i≤r. 2 k l r x: set Aki:=max(Aki,x)Aki:=max(Aki,x) for each l≤i≤rl≤i≤r. 3 k...
CodeForces1288 C.Two Arrays(dp/组合数学) C.Two Arrays You are given two integers n and m. Calculate the number of pairs of arrays (a,b) such that: the length of both arrays is equal to m; each element of each array is an integer between 1 and n (inclusive); ai≤bi for any ind...
CodeForces 1353 B. Two Arrays And Swaps 2. 解读 将a序列按照升序排序, 将 b按照降序排序。 依次遍历 a序列中的所有元素,当 a_i > b_j时,将 a_i和b_j交换,然后j = j + 1。 3. 代码 #include <algorithm> #include <iostream> #include <string.h> const long long num = 1e2 + 1; using...
【CodeForces 620D】Professor GukiZ and Two Arrays 题意 两个数列,一个有n个数,另一个有m个数,让你最多交换两次两个数列的数,使得两个数列和的差的绝对值最小,求这个差的绝对值、最少交换次数、交换数对 分析 交换0次、1次可得到的最小的差可以枚举出来。
链接:https://codeforces.com/contest/1288/problem/C You are given two integers nn and mm. Calculate the number of pairs of arrays (a,b)(a,b) such that: the length of both arrays ...C. Two Arrays You are given two integers nn and mm. Calculate the number of pairs of arrays (a...
We have two arrays of integer with n elements ( n <= 10^5 ) , consider: a1 a2 a3 ... an b1 b2 b3 ... bn ( abs(a[i],b[i]) <= 10^9 ) print maximum first k element c=(a[i] * b[j]) ( 1<=i,j<=n) For example: input: n=3 k=3 ...
Codeforces-620d Professor GukiZ and Two Arrays 题目大意: 给你两个数组,一个长度为n,一个长度为m,第一个数组各个元素的和为suma,第二个数组各个元素的和为sumb,现在想要通过交换两个数组元素的方式使Abs(suma - sumb)最小,但是交换的次数不能超过两次。让你输出Abs(suma - sumb)的最小值,并输出这个...
https://codeforces.com/problemset/problem/1288/C Examples input 2 2 1. output 5 1. input 10 1 1. output 55 1. input 723 9 1. output 157557417 1. Note In the first test there are 5 suitable arrays: a=[1,1],b=[2,2]