POJ 3566 Building for UN (无脑构造 水题)

Building for UN

Time Limit: 5000MS Memory Limit: 65536KTotal Submissions: 1872 Accepted: 832 Special Judge

Description

The United Nations has decided to build a new headquarters in Saint Petersburg, Russia. It will have a form of a rectangular parallelepiped and will consist of several rectangular floors, one on top of another. Each floor is a rectangular grid of the same dimensions, each cell of this grid is an office.

Two offices are considered adjacent if they are located on the same floor and share a common wall, or if one’s floor is the other’s ceiling.

The St. Petersburg building will host n national missions. Each country gets several offices that form a connected set.

Moreover, modern political situation shows that countries might want to form secret coalitions. For that to be possible, each pair of countries must have at least one pair of adjacent offices, so that they can raise the wall or the ceiling they share to perform secret pair-wise negotiations just in case they need to.

You are hired to design an appropriate building for the UN.

Input

The input file consists of a single integer numbern (1 ≤ n ≤ 50) — the number of countries that are hosted in the building.

Output

On the first line of the output file write three integer numbersh, w, and l — height, width and length of the building respectively.

h descriptions of floors should follow. Each floor description consists ofl lines with w characters on each line. Separate descriptions of adjacent floors with an empty line.

Use capital and small Latin letters to denote offices of different countries. There should be at most1 000 000 offices in the building. Each office should be occupied by a country. There should be exactlyn different countries in the building. In this problem the required building design always exists.

Sample Input

4

Sample Output

2 2 2ABCCzzzz

Source

Northeastern Europe 2007

题目链接：http://poj.org/problem?id=3566

题目大意：用大写或小写字母表示一个国家的所有房间，有n个国家，要求任意两个国家至少有一个房间相邻(上下左右前后6个方向)，每个国家自己所有的房间要是一个连通集合，求可行的构造方案

题目分析：在纸上画画即可

#include <cstdio>char ans[100] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";int main(){    int n;    while(scanf("%d", &n) != EOF)    {        printf("2 %d %d\n", n, n);        for(int i = 0; i < n; i++)        {            for(int j = 0; j < n; j++)                printf("%c", ans[i]);            printf("\n");        }        printf("\n");        for(int i = 0; i < n; i++)        {            for(int j = 0; j < n; j++)                printf("%c", ans[j]);            printf("\n");        }    }}