/in/foo.cc: In function 'LL baoli()':
/in/foo.cc:45:67: warning: unused variable 'y' [-Wunused-variable]
         int type = a[b[i]].type,x = a[b[i]].pos,val = a[b[i]].val,y,tmp;
                                                                   ^
/in/foo.cc:45:69: warning: unused variable 'tmp' [-Wunused-variable]
         int type = a[b[i]].type,x = a[b[i]].pos,val = a[b[i]].val,y,tmp;
                                                                     ^~~