c-gcc, 303 bytes

Result

WA

Code [DL]

#include<stdio.h>
#include<math.h>
main() {
    char s[8];
    for(int i=0;i<50;i++) {
        gets(s);
        int x=0;
        for(int j=0; j<8;j++)
        {
         x *= 2; x += (s[j]=='1');
        }
        int y = 1 + 8 * x;
        int z =(int)sqrt(y);
        printf("%d", z * z / y);
    }
}

stdin

10000011
10000010
10001000
01101011
10001011
11111101
01000010
00100000
00110011
00000110
11001110
01000110
00001111
00010100
01010011
10000000
11100111
00101101
01101001
00000000
00011100
10110011
11010010
00011111
00100110
00101000
01111011
10110111
00001111
00110111
01111000
11111000
00100100
10011001
01101111
10110101
00001010
01001110
10111110
11010110
01010010
00010101
00000011
00000010
01011011
01011011
11111100
00000001
10000001
10101011

stdout

stderr

/tmp/code.c:3:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
 main() {
 ^
/tmp/code.c: In function ‘main’:
/tmp/code.c:6:9: warning: ‘gets’ is deprecated [-Wdeprecated-declarations]
         gets(s);
         ^
In file included from /usr/include/stdio.h:936:0,
                 from /tmp/code.c:1:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:233:1: note: declared here
 gets (char *__str)
 ^
/tmp/code.c:6:9: warning: ignoring return value of ‘gets’, declared with attribute warn_unused_result [-Wunused-result]
         gets(s);
         ^
/tmp/ccZ73SB2.o: In function `main':
code.c:(.text.startup+0x31): warning: the `gets' function is dangerous and should not be used.
code.c:(.text.startup+0xae): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
/home/esolang/bin/c-gcc: line 6: /tmp/code: No such file or directory
rm: cannot remove '/tmp/code': No such file or directory

strace