by@yamayu832
WA
using System;
class E{static void Main(){
int[] A=new int[] {0,1,3,6,10,15,21,28,36,45,55,66,78,91,105,120,136,153,171,190,210,231,253};
int g=Convert.ToInt32(Console.ReadLine(),2);
Console.Write(Array.IndexOf(A,g)?1:0);
}}00010101 11010010 10010110 10001000 00110110 11100101 11010101 00000011 01001110 10111100 11010000 00011100 01011000 11110010 01010010 00000000 00001111 00001001 10011001 10011001 00000110 00000001 10111110 01011011 00000010 00110111 11100111 10101011 01110110 10010000 00100100 00001010 11111101 01000010 01101011 10101111 01110000 00001111 00011111 00100010 11001001 11100110 01111000 11011000 01101001 00001011 01100110 00101101 11000101 00100011
Compilation failed: 1 error(s), 0 warnings
/tmp/code.cs(5,21): error CS0029: Cannot implicitly convert type `int' to `bool' Cannot open assembly '/tmp/code.exe': No such file or directory. rm: cannot remove '/tmp/code.exe': No such file or directory