/in/foo.cc:16:85: error: stray '\357' in program
   else if(n%2==0) {mid2=n/2;for(i=1;i<mid2;i++) {x=up[n-i+1];up[n-i+1]=up[i];up[i]=x；} }
                                                                                     ^
/in/foo.cc:16:86: error: stray '\274' in program
   else if(n%2==0) {mid2=n/2;for(i=1;i<mid2;i++) {x=up[n-i+1];up[n-i+1]=up[i];up[i]=x；} }
                                                                                      ^
/in/foo.cc:16:87: error: stray '\233' in program
   else if(n%2==0) {mid2=n/2;for(i=1;i<mid2;i++) {x=up[n-i+1];up[n-i+1]=up[i];up[i]=x；} }
                                                                                       ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:16:88: error: expected ';' before '}' token
   else if(n%2==0) {mid2=n/2;for(i=1;i<mid2;i++) {x=up[n-i+1];up[n-i+1]=up[i];up[i]=x；} }
                                                                                        ^