#include <bits/stdc++.h>

using namespace std;
int n, x, d = 0;
int main() {
    cin >> n >> x;
    int a[n + 1];
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        if (a[i] == x) d++;
    }
    if (d == 0) cout << "NO";
    else {
        cout << "YES\n";
        for (int i = 1; i <= n; i++)
            if (a[i] == x) cout << i << " ";
    }
    return 0;
}

# $\color{black}{\text{le}}$$\color{gray}{\text{duc}}$$\color{darkgray}{\text{trung}}$$\color{white}{\text{anh}}$