giúp em với ạ làm giúp em bằng c++ ạ

`color(#FFFFFFff)(H)color(#E7E7E7ff)(o)color(#CFCFCFff)(r)color(#B7B7B7ff)(i)color(#9F9F9Fff)(z)color(#878787ff)(o)color(#6F6F6Fff)(n)`

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n, k; cin >> n >> k; vector<int> a(n);
    for(int i = 0; i < n; i++) cin >> a[i];
    auto it = find(a.begin(), a.end(), k);
    cout << (it != a.end() ? distance(a.begin(), it) + 1: -1);
}

#danglam228

#include<bits/stdc++.h>
using namespace std;
int n, k;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    //freopen(".INP", "r", stdin);
    //freopen(".OUT", "w", stdout);
    cin >> n >> k;
    int a[n];
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    int l = 0, r = n - 1;
    int ans = -1;
    while (l <= r) {
        int mid = l + (r - l) / 2;
        if (a[mid] == k) {
            ans = mid + 1;
            break;
        } else if (a[mid] < k) {
            l = mid + 1;
        } else {
            r = mid - 1;
        }
    }
    cout << ans << endl;
    return 0;
}