by@xuzijian629_key
WA
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?0:1);}}
10011001 01110101 00001100 00000000 10101111 00101101 10000011 00000011 00101000 01000010 11110000 11001001 01101001 00110000 10011111 00100100 11100000 00001111 11111101 00011101 11001111 10111110 11100111 00001010 10000111 01111000 11010010 11111100 01110000 11101101 00110111 10101011 01001000 00011100 10010000 00000000 00100010 00000110 00110110 11000110 10111110 00010101 10100000 00000001 01011011 10010011 11100110 01001110 10001000 10100010
Compilation failed: 1 error(s), 0 warnings
/tmp/code.cs(1,80): error CS0029: Cannot implicitly convert type `double' to `bool' Cannot open assembly '/tmp/code.exe': No such file or directory. rm: cannot remove '/tmp/code.exe': No such file or directory