zoukankan      html  css  js  c++  java
  • CodeForces

    Levko loves tables that consist of n rows and n columns very much. He especially loves beautiful tables. A table is beautiful to Levko if the sum of elements in each row and column of the table equals k.

    Unfortunately, he doesn't know any such table. Your task is to help him to find at least one of them.

    Input

    The single line contains two integers, n and k (1 ≤ n ≤ 100, 1 ≤ k ≤ 1000).

    Output

    Print any beautiful table. Levko doesn't like too big numbers, so all elements of the table mustn't exceed 1000 in their absolute value.

    If there are multiple suitable tables, you are allowed to print any of them.

    Examples

    Input

    2 4
    

    Output

    1 3
    3 1
    

    Input

    4 7
    

    Output

    2 1 0 4
    4 0 2 1
    1 3 3 0
    0 3 2 2
    

    Note

    In the first sample the sum in the first row is 1 + 3 = 4, in the second row — 3 + 1 = 4, in the first column — 1 + 3 = 4 and in the second column — 3 + 1 = 4. There are other beautiful tables for this sample.

    In the second sample the sum of elements in each row and each column equals 7. Besides, there are other tables that meet the statement requirements.

    题解:这道题我最初的想法是用深搜来做,但是感觉放在第一题的位置肯定大材小用,然后不难发现只要输出任意符合要求的一组即可,只需要对角线是k即可

    代码:

    #include<cstdio>
    #include<cstring>
    #include<algorithm>
    #include<iostream>
    
    using namespace std;
    int a[105][105];
    int main() {
    	int n,k;
    	cin>>n>>k;
    	for(int t=0; t<n; t++) {
    		for(int j=0; j<n; j++) {
    			if(t==j) {
    				a[t][j]=k;
    			}
    		}
    	}
    	for(int t=0; t<n; t++) {
    		for(int j=0; j<n; j++) {
    			cout<<a[t][j]<<" ";
    		}
    		cout<<endl;
    
    	}
    	return 0;
    }
  • 相关阅读:
    CentOS 6.6 系统升级到 CentOS 6.7
    Nginx 默认的日志类型
    windows 系统后台运行 jar 包
    windows 下启动运行 jar 包程序
    Zabbix 添加端口监控链接
    提取 linux 文件目录结构
    Android LayoutInflater详解
    String,StringBuffer与StringBuilder的区别??
    Android中Cursor类的概念和用法
    Intent中的四个重要属性——Action、Data、Category、Extras
  • 原文地址:https://www.cnblogs.com/Staceyacm/p/10781879.html
Copyright © 2011-2022 走看看