/**

 * @param {number[]} candidates

 * @param {number} target

 * @return {number[][]}

 */

var combinationSum2 = function(candidates, target) {

    var item=[],path=[];

    candidates=candidates.sort(function(a,b){return a-b})

    GG(candidates,target,target,item,path,0)

    return item

    function GG(candidates,target,remain,item,path,start){

        if(remain<0)

            return;

        if(remain==0){

             path=path.slice()

             item.push(path);

        }

        else{

            for(var i=start;i<candidates.length;i++){

                if(i>start&&candidates[i]==candidates[i-1])

                    continue;

                path.push(candidates[i])

                GG(candidates,target,remain-candidates[i],item,path,i+1)

                path.pop()

            }

        }

    }

};