题目链接: A. Mashmokh and Numbers time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output It's holiday. Mashmokh and his boss, Bimokh, are playing a game invented by Mashmokh. In this game Mashmokh wri…
, a2, ..., an such that his boss will score exactly k points. Also Mashmokh can't memorize too huge numbers. Therefore each of these integers must be at most 109. Input The first line of input contains two space-separated integers n, k (1 ≤ n ≤ 105; …
[codeforces 55]D. Beautiful numbers 试题描述 Volodya is an odd boy and his taste is strange as well. It seems to him that a positive integer number is beautiful if and only if it is divisible by each of its nonzero digits. We will not argue with this and…
题意:就是n个数和k,每次按顺序那两个数,最大公约数的和为k. 思路:注意:当n=1,k>0时一定不存在,还有n=1,k=0时为1即可. 然后再正常情况下,第一组的最大公约数为k-n/2+1即可,后面是含有素数.(本来,配的是素数和素数+1, 然后会怕第一组会重复,后来直解两个素数了,因为第一组要么是特殊的素数要么是合数所以么有必要担心重复) #include<iostream> using namespace std; #define N int(1e7+10) int prime[N…
Codeforces Round #597 (Div. 2 Consider the set of all nonnegative integers: 0,1,2,-. Given two integers a and b (1≤a,b≤104). We paint all the numbers in increasing number first we paint 0, then we paint 1, then 2 and so on. Each number is painted whi…
Alyona and Numbers 题目链接: http://acm.hust.edu.cn/vjudge/contest/121333#problem/A Description After finishing eating her bun, Alyona came up with two integers n and m. She decided to write down two columns of integers - the first column containing inte…
