/in/foo.cc: In function 'int main()':
/in/foo.cc:63:16: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
     jud[j + 1] = y;
     ~~~~~~~~~~~^~~
/in/foo.cc:62:4: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
    if (jud[j] == x)
    ^~