C. Maximal GCD time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given positive integer number n. You should create such strictly increasing sequence of k positive numbers a1, a2, ...…

Educational Codeforces Round 20  A. Maximal Binary Matrix 直接从上到下从左到右填,注意只剩一个要填的位置的情况 view code //#pragma GCC optimize("O3") //#pragma comment(linker, "/STACK:1024000000,1024000000") #include<bits/stdc++.h> using namespace std; fu…

#include<bits/stdc++.h>using namespace std;const int N=1e6+6;int x[N],y[N];int sx,sy,n;char s[N];bool check(int m){    for(int i=1;i<=n-m+1;i++)    {        int tx=x[n]-x[i+m-1]+x[i-1];  //当前原来选项造成的横坐标影响        int ty=y[n]-y[i+m-1]+y[i-1];  //当前原…

The main city magazine offers its readers an opportunity to publish their ads. The format of the ad should be like this: There are space-separated non-empty words of lowercase and uppercase Latin letters. There are hyphen characters '-' in some words…

題目鏈接: http://codeforces.com/problemset/problem/803/C 題意: 給出兩個數n, k, 將n拆分成k個數的和,要求這k個數是嚴格遞增的,並且這k個數的gcd盡量大... 思路: 顯然題目的要求是求 n = a1*cnt + a2*cnt + a3*cnt..+ak*cnt 其中a1<a2<a3..<ak 並且要求cnt盡量大: 要使cnt盡量大,那麼顯然a1...ak要盡量小, 那麼可以令a1...ak=1, 2, 3, ..k, 令key…

题目链接:https://codeforces.com/contest/1156/problem/B 题意:给一段字符串,通过变换顺序使得该字符串不包含为位置上相邻且在字母表上也相邻的情况,并输出. 思路:可以把该字符串的奇字符和偶字符按字典序分别组成字符串s1,s2,然后判断s1+s2和s2+s1是否满足条件,若都不满足则输出“No answer”.可以模拟一下,当s1+s2和s2+s1都不满足即最大奇字符和最小偶字符相差不为1且最大偶字符和最小奇字符相差不为1,是无法找到满足条件的字符串的.…

D. Road to Post Office time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vasiliy has a car and he wants to get from home to the post office. The distance which he needs to pass equals to d ki…

C. Maximal GCD time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given positive integer number n. You should create such strictly increasing sequence of k positive numbers a1, a2, ...…

C. Maximal GCD time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given positive integer number n. You should create such strictly increasing sequence of k positive numbers a1, a2, ...…

B. Distances to Zero time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given the array of integer numbers a0, a1, ..., an - 1. For each element find the distance to the nearest zero…