{ 
 let [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [],
     [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [], [] = [];
    print("ok");
}