// MAKE FUNCTION

function sum(a,b) {
  return a+b;
}

function make(){

  var  res = [].slice.call(arguments);

  return function innerFunc(){
    if(typeof arguments[0] != 'function'){
      var args = [].slice.call(arguments);
       res = res.concat(args);
      return innerFunc;
    }else{
     return res = res.reduce(arguments[0]);
    }
  }
}

make(23,12)(1)(45)(2,34,7)(sum);