H. 最小内积                                                                   Time Limit: 1000ms Memory Limit: 65536KB 64-bit integer IO format: %lld      Java class name: Main 向量是几何中的一个重要概念. 考虑两个向量 v1=(x1,x2,...,xn)和v2=(y1,y2,...,yn),向量的内积定义为 x1y1+x2y2+…

A. Nearly Lucky Number time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations con…

D. Animals time limit per test 2 seconds memory limit per test 64 megabytes input input.txt output output.txt Once upon a time DravDe, an outstanding person famous for his professional achievements (as you must remember, he works in a warehouse stori…

#include <bits/stdc++.h> using namespace std; int main() { int T,n,a,b; while(cin>>T) { while(T--) { cin>>n; ; ;i<=n-;i++) { cin>>a>>b; ans=min(ans,a+b); } cout<<ans<<endl; } } ; } C. Captcha Cracker题目大意:给一个字符串…

『PyTorch』第四弹_通过LeNet初识pytorch神经网络_上 『PyTorch』第四弹_通过LeNet初识pytorch神经网络_下 在前面的例子中,基本上都是将每一层的输出直接作为下一层的输入,这种网络称为前馈传播网络(feedforward neural network).对于此类网络如果每次都写复杂的forward函数会有些麻烦,在此就有两种简化方式,ModuleList和Sequential.其中Sequential是一个特殊的module,它包含几个子Module,前向传播时…

C. Primes on Interval time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You've decided to carry out a survey in the theory of prime numbers. Let us remind you that a prime number is a positiv…

A. Boy or Girl time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Description Those days, many boys use beautiful girls' photos as avatars in forums. So it is pretty hard to tell the gender of…

B. Easy Number Challenge time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Let's denote d(n) as the number of divisors of a positive integer n. You are given three integers a, b and c. Your…

题目描述:There are n cities in Byteland, and the ith city has a value ai. The cost of building a bidirectional road between two cities is the sum of their values. Please  calculate the minimum cost of connecting these cities, which means any two cities c…

传送门 E.sequence •题意 定义序列 p 中的 "good",只要 i 之前存在 pj < pi,那么,pi就是 "good": 求删除一个数,使得序列中 "good" 的个数最多: •题解 一个数 pi 对 "good" 的贡献有两个来源: ①pi 本身为"good",对答案的贡献为 1: ②删除 pi 后,i 之后的本来是 "good" 的数因为 pi 被删除而变成非…