Hi Artem

I have modified the code and now i am getting the proper answer for your test case:
27,9,1,3 the min diff is 14
this is the code

#include<stdio.h>
    #include<conio.h>
    #include<math.h>
    #include<stdlib.h>
    //void even_diff(int [],int);
    //#define N 100000
    #define TRUE 1
    #define FALSE 0
    int main(){
        //clrscr();

        int n;
        int i,j;
        int temp=0;
        long sum_l=0,sum_r=0;
        long cur_sum=0;
        long old_sum=0;
        long stones[100000];
        int left_out=0;
        int isLeftOut;

        //printf("\nenter n:");
        scanf("%d",&n);

        //printf("\nenter wts: ");

        for(i=0;i<n;i++)
          scanf(" %ld",&stones[i]);


      for(i=0;i<n;i++)
        cur_sum+=stones[i];
      old_sum=cur_sum;
      cur_sum=cur_sum/2;
      //printf("\ncur_sum=%ld",cur_sum);

        if(n==1)
          printf("\n%ld",stones[0]);
        else if(n==2)
          printf("\n%ld",abs(stones[0]-stones[1]));
        else{

          for(i=0;i<n;i++){
        for(j=i+1;j<n;j++){
          if(stones[i]<stones[j]){
            temp=stones[i];
            stones[i]=stones[j];
            stones[j]=temp;
        }
      }
    }

    sum_l=stones[0];
    sum_r=stones[1];


    isLeftOut=FALSE;
    for(i=2;i<n;i++){
     if(sum_l+stones[i]<=cur_sum)
      sum_l+=stones[i];
    else if(sum_r+stones[i]<=cur_sum)
      sum_r+=stones[i];
    else{
      left_out=stones[i];
      isLeftOut=TRUE;
    }
    }
  /*if(old_sum%2==0)
    printf("\n%ld",abs(sum_l+sum_r-(2*cur_sum)));
  else*/
  if(isLeftOut)
    printf("\n%ld",abs(sum_l-sum_r-left_out));

  else
    printf("\n%ld",abs(sum_l-sum_r));


}
  //printf("\nsum_l=%ld sum_r = %ld",sum_l,sum_r);

      getch();
      return 1;

    }

I am getting WA#5. I dont know what more i should do as i feel i have taken a long long time to do this simple problem!!!