ArrayAdditionI.js

function sortfunction(a, b)
{
  return (a - b) //causes an array to be sorted numerically and ascending
}

function canWeDoIt( target , a )
{
  if( a.length == 1 )
    return (a[0] == target);
  if( a[0] == target )
    return true;
  var i = a.shift();
  if( i > target )
    return canWeDoIt( target , a.slice(0) );
  else
    return canWeDoIt( target , a.slice(0) ) || canWeDoIt( target - i , a.slice(0) );
}


function ArrayAdditionI(arr)
{ 
  arr = arr.sort(sortfunction);
  var  target = arr.pop()
  //return target;
  return canWeDoIt( target , arr )
}
   
// keep this function call here 
// to see how to enter arguments in JavaScript scroll down
ArrayAdditionI(readline());