/**

  • @param S String
  • @return String

*/
var Solution = function(S){

var a=S.length
if(a<2)
{
    return 'Empty String'
}else if(a>=2&&a<=4)
{
    return S
}else
{
    var b=S[0]+S[1]+S[a-2]+S[a-1]
    return b
}

};