by@cookies146
AC
using System;class E{static void Main(){for(int i=51;--i>0;)Console.Write(Math.Sqrt(8*Convert.ToByte(Console.ReadLine(),2)+1)%2==1?1:0);}}01011011 00010101 01110001 10000100 00000110 00110111 00001000 01000111 00101101 10111110 00100100 00111100 00001010 11010010 01101111 10011001 00001111 10111000 11001000 00101100 00010000 00000000 11110000 01101001 01100001 10010010 00000011 01111100 01110010 00011100 00000100 01111000 11111101 01000010 01000100 00000000 00011110 10011011 10001110 00000001 10110001 11001100 01001110 10101011 01010110 11100111 10001000 11011000 00100100 11110110
11001100111011011000010100100101110100010011011010