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# include <bits/stdc++.h>
using namespace std ;
/*
测试样例：
abcdefgh
输出：
aebfcgdh
思考：
行数： ：
(1) 1行，
(2) 2行，
(3) 3行， ， ，
(4) 4行， ，
*/
const int N = 210 ;
char a [ N ] [ N ] ; // 开一个二维数组用来模拟
int n , m ; // 最后是几行几列
int main ( ) {
string s ;
cin > > s ; // 生成一个n行m列的矩阵
// 1、几行几列是答案？
int len = s . size ( ) ;
for ( int i = 1 ; ; i + + ) {
if ( len % i = = 0 & & len / i > = i ) n = i ; // 找到一个合理解，更新之
if ( len / i < i ) break ; // 跑过了，就停下来
}
m = len / n ; // 每行多少列
// 2、做一个二维矩阵存进去
for ( int i = 0 ; i < n ; i + + ) // 行
for ( int j = 0 ; j < m ; j + + ) // 列
a [ i ] [ j ] = s [ i * m + j ] ;
// 3、从第一列开始，
for ( int j = 0 ; j < m ; j + + )
for ( int i = 0 ; i < n ; i + + )
cout < < a [ i ] [ j ] ;
return 0 ;
}
