by@kurgm
AC
using System;class M{static void Main(){for(int i=50;i-->0;)Console.Write((1==Math.Sqrt(Convert.ToInt32(Console.In.ReadLine(),2)*8+1)%2)?1:0);}}01111000 01011100 10110110 01010111 10111110 01000010 01010001 00010101 10100001 00011100 00001010 00000011 11010010 11011101 01001000 01111100 10101011 01011011 10011001 10001000 11111110 01111111 01110111 10000000 10001110 00000110 10111110 11101110 01001110 00101101 01101001 10101110 01000101 00000000 00000001 00001111 00110111 10110101 10011010 11111101 11111111 00110110 00110111 11100111 01111001 00010010 00100100 11101000 11111100 11010101
10001101011110001111000001101110011110010011001000