zoukankan      html  css  js  c++  java
  • codeforces 876B

    B. Divisiblity of Differences
    time limit per test
    1 second
    memory limit per test
    512 megabytes
    input
    standard input
    output
    standard output

    You are given a multiset of n integers. You should select exactly k of them in a such way that the difference between any two of them is divisible by m, or tell that it is impossible.

    Numbers can be repeated in the original multiset and in the multiset of selected numbers, but number of occurrences of any number in multiset of selected numbers should not exceed the number of its occurrences in the original multiset.

    Input

    First line contains three integers n, k and m (2 ≤ k ≤ n ≤ 100 000, 1 ≤ m ≤ 100 000) — number of integers in the multiset, number of integers you should select and the required divisor of any pair of selected integers.

    Second line contains n integers a1, a2, ..., an (0 ≤ ai ≤ 109) — the numbers in the multiset.

    Output

    If it is not possible to select k numbers in the desired way, output «No» (without the quotes).

    Otherwise, in the first line of output print «Yes» (without the quotes). In the second line print k integers b1, b2, ..., bk — the selected numbers. If there are multiple possible solutions, print any of them.

    Examples
    Input
    3 2 3
    1 8 4
    Output
    Yes
    1 4
    Input
    3 3 3
    1 8 4
    Output
    No
    Input
    4 3 5
    2 7 7 7
    Output
    Yes
    2 7 7

    比赛前一天还做过类似的题。。。结果当时愣是卡住了。。。气死我了
    解题思路:
    用数组记录每个数对m取模余数相等的有多少个。。
    ac代码:
     1 #include <cstdio>
     2 #include <cstring>
     3 #include <iostream>
     4 #include <algorithm>
     5 using namespace std;
     6 const int maxn = 1e5+5;
     7 int nu[maxn];
     8 int cnt[maxn];
     9 int main() {
    10     ios::sync_with_stdio(false);
    11     int n,k,m,i;
    12     cin>>n>>k>>m;
    13     for(i=1;i<=n;++i) {
    14         cin>>nu[i];
    15     }
    16     int ans=-1;
    17     for(i=1;i<=n;++i) {
    18         int u=nu[i]%m;
    19         ++cnt[u];
    20         if(cnt[u]==k) {
    21             ans=u;
    22             break;
    23         }
    24     }
    25     if(ans==-1) cout<<"No"<<endl;
    26     else {
    27         cout<<"Yes"<<endl;
    28         for(int i=1;i<=n;++i) {
    29             if(nu[i]%m==ans) {
    30                 --k;
    31                 cout<<nu[i]<<" ";
    32             }
    33             if(k==0) break;
    34         }
    35     }
    36     return 0;
    37 }
    View Code
  • 相关阅读:
    使用DataList进行ItemDataBound时出来重复绑定
    往一个数据添加另外一个数据表里面的数据
    在ServU配置ODBC过程记录(一)
    在RowDeleting中GridViewDeleteEventArgs e的RowIndex获得值错误的问题
    在Master母版页中通过FindControl()方法获取服务器控件
    经典的间隔时间滚动新闻(图片),可控制滚动
    为枚举类型添加描述信息 this 扩展 泛型约束 位运算[转]
    SQL Server 获取插入记录后的ID(自动编号)
    Shapes
    CSSFriendlyAdapter 的一个Bug
  • 原文地址:https://www.cnblogs.com/zmin/p/7683659.html
Copyright © 2011-2022 走看看