Description
利用字母可以组成一些美丽的图形，下面给出了一个例子：
ABCDEFG
BABCDEF
CBABCDE
DCBABCD
EDCBABC
这是一个5行7列的图形，请找出这个图形的规律，并输出一个n行m列的图形。
Input
输入一行，包含两个整数n和m，分别表示你要输出的图形的行数的列数。
Output
输出n行，每个m个字符，为你的图形。
Sample Input
5 7
Sample Output
ABCDEFG BABCDEF CBABCDE DCBABCD EDCBABC
Hint
数据规模与约定 1 < = n, m < = 26。
#include <cstdio> #include <iostream> using namespace std;char ar[27][28] = {"ABCDEFGHIJKLMNOPQRSTUVWXYZ","BABCDEFGHIJKLMNOPQRSTUVWXY","CBABCDEFGHIJKLMNOPQRSTUVWX","DCBABCDEFGHIJKLMNOPQRSTUVW","EDCBABCDEFGHIJKLMNOPQRSTUV","FEDCBABCDEFGHIJKLMNOPQRSTU","GFEDCBABCDEFGHIJKLMNOPQRST","HGFEDCBABCDEFGHIJKLMNOPQRS","IHGFEDCBABCDEFGHIJKLMNOPQR","JIHGFEDCBABCDEFGHIJKLMNOPQ","KJIHGFEDCBABCDEFGHIJKLMNOP","LKJIHGFEDCBABCDEFGHIJKLMNO","MLKJIHGFEDCBABCDEFGHIJKLMN","NMLKJIHGFEDCBABCDEFGHIJKLM","ONMLKJIHGFEDCBABCDEFGHIJKL","PONMLKJIHGFEDCBABCDEFGHIJK","QPONMLKJIHGFEDCBABCDEFGHIJ","RQPONMLKJIHGFEDCBABCDEFGHI","SRQPONMLKJIHGFEDCBABCDEFGH","TSRQPONMLKJIHGFEDCBABCDEFG","UTSRQPONMLKJIHGFEDCBABCDEF","VUTSRQPONMLKJIHGFEDCBABCDE","WVUTSRQPONMLKJIHGFEDCBABCD","XWVUTSRQPONMLKJIHGFEDCBABC","YXWVUTSRQPONMLKJIHGFEDCBAB","ZYXWVUTSRQPONMLKJIHGFEDCBA"}; int main () {int n, m;while (scanf("%d %d", &n, &m) != EOF) {for (int i = 0; i < n; ++i) {for (int j = 0; j < m; ++j) {cout << ar[i][j];}cout << '\n';}} }