/in/foo.cc: In function 'int main()':
/in/foo.cc:44:40: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if(j+k==(1<<maxn)-1||j==k||(j&k)==k&&(j&1)==0||(((1<<maxn)-1-j)&k)==k&&(((1<<maxn)-1-j)&1)==0)
                                ~~~~~~~~^~~~~~~~~~
/in/foo.cc:44:74: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if(j+k==(1<<maxn)-1||j==k||(j&k)==k&&(j&1)==0||(((1<<maxn)-1-j)&k)==k&&(((1<<maxn)-1-j)&1)==0)
                                                    ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.cc:48:7: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
       if(hashx[i]==0)
       ^~
/in/foo.cc:50:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
   makemap();
   ^~~~~~~