js-rhino, 282 bytes

Result

WA

Code [DL]

importPackage(java.io);
importPackage(java.lang);
const stdin = new BufferedReader(new InputStreamReader(System.in));
for (i=0;i<50;i++) {
let aLine = stdin.readLine();
print([0,1,3,6,10,15,21,28,36,45,55,66,78,91,105,120,136,153,171,190,210,231,253].includes(parseInt(aLine,2)));
}

stdin

01111000
00100100
00001111
00100001
11100111
01001110
01011011
00011100
00101101
10000110
00101011
11111101
01101001
11010010
11110000
10111110
00110111
00010101
10110111
00001010
00100100
01011111
00000000
10001000
11100111
00000110
10011011
10010100
10011010
10110101
00101010
01000010
11000101
10011001
10111010
11001011
00001100
10011110
11110111
10101011
11001100
11010001
11111100
00010011
00000011
10100100
11011111
01000101
11010110
00000001

stdout

stderr

js: uncaught JavaScript runtime exception: TypeError: Cannot find function includes in object 0,1,3,6,10,15,21,28,36,45,55,66,78,91,105,120,136,153,171,190,210,231,253.

strace