two sum (n logn)

#include <iostream>
#include<algorithm>
using namespace std;

int main() {
    int n,a[100],x,i,j;
    cin>>n;cin>>x;
    for(i=0;i<n;i++)
         cin>>a[i];
     int sum=0;
     sort(a, a+n, greater<int>());
     for(i=0,j=n-1;i<n,j>=0;)
        {
            if(a[i]+a[j]<x)
              {
                  j--;
              }
             else if(a[i]+a[j]>x)
              { i++;
              } 
              else
              {   sum=a[i]+a[j];
                  cout<<a[i]<<"  "<<a[j];
                  break;
              }
        }
        if(sum==0)
        cout<<" sorry couldn't find ";
     
    return 0;
}