Children's Day

Problem Description

Today is Children's Day. Some children ask you to output a big letter 'N'. 'N' is constituted by two vertical linesand one diagonal. Each pixel of this letter is a character orderly. No tail blank is allowed.
For example, this is a big 'N' start with 'a' and it's size is 3.

a e
bdf
c g

Your task is to write different 'N' from size 3 to size 10. The pixel character used is from 'a' to 'z' continuously and periodic('a' is reused after 'z').

 

Input

This problem has no input.

 

Output

Output different 'N' from size 3 to size 10. There is no blank line among output.

 

Sample Output

[pre] a e bdf c g h n i mo jl p k q ......... r j [/pre]

Hint

Not all the resultsare listed in the sample. There are just some lines. The ellipsis expresseswhat you should write.

 

Source

2013 ACM/ICPC Asia Regional Online —— Warmup

#include <stdio.h>
#include <string.h>
using namespace std;

char a[15][15];
char ch(char c)
{
    return 'a'+(c-'a'+1)%26;
}
char change(int j,char c)
{
    int i,k;
    memset(a,' ',sizeof(a));
    for(i=0; i<j; i++) a[i][0]=c, c=ch(c);
    for(i=1; i<j-1; i++) a[j-i-1][i]=c,c=ch(c);
    for(i=0; i<j; i++) a[i][j-1]=c,c=ch(c);

    for(i=0; i<j; i++)
    {
        for(k=0; k<j; k++)
        {
            if(a[i][k]!=' ') printf("%c",a[i][k]);
            else printf(" ");
        }
        puts("");
    }

    return c;
}
int main()
{
    int t,i;
    char ch='a';
    for(i=3; i<=10; i++) ch=change(i,ch);
    return 0;
}