UVa 11716 - Digital Fortress

	/**
	* Author : Md.Mehadi Hasan Menon.
	* Problem : 11716 - Digital Fortress.
	* Status : ACCEPTED.
	* Date : 05-10-2014.
	**/
	#include <stdio.h>
	#include <string.h>
	#include <math.h>
	#define maxInput 10010
	int main()
	{
	char text[maxInput];
	char ara[105][105];
	int i, j, k, len, n, tCase;
	scanf("%d", &tCase);
	getchar();
	while(tCase--)
	{
	gets(text);
	k = 0;
	len = strlen(text);
	n = sqrt(len);
	if( n * n == len )
	{
	for(i = 0; i < n; i++)
	{
	for(j = 0; j < n; j++)
	{
	ara[i][j] = text[k++];
	}
	}
	for(i = 0; i < n; i++)
	{
	for(j = 0; j < n; j++)
	{
	printf("%c", ara[j][i]);
	}
	}
	printf("\n");
	}
	else
	{
	printf("INVALID\n");
	}
	}
	return 0;
	}

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