Hey, can you explain the last part of your solution?(the for loop after calculating `right` and `left`)

I fail to understand, why in line 29 and 37, the condition inside for loop is j <= e?

Shouldn't it be j < edg.size();

What's wrong with this?

#include <vector>
#include <cstdio>
#include <algorithm>
using namespace std;
 
vector<int> V;
vector<int> W;
int Vi = -1, Wi = -1, S, E;
int t;
 
void _Vi(int low, int high)
{
  if (low > high)
    return;
  else
  {
    int mid = (low + high) / 2;
 
    if (V[mid] <= S)
    {
      Vi = mid;
      _Vi(mid + 1, high);