#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using vi = vector<int>;
using pi = pair <int, int>;

void solve ()
{
    int n, q;
    cin >> n >> q;
    vi a(n);
    for (auto& x : a)
        cin >> x;

    vi ps(n);
    for (int i = 1; i < n; ++i)
        ps[i] = ps[i - 1] + (a[i] >= a[i - 1]);

    for (int i = 0; i < q; ++i)
    {
        int l, r;
        cin >> l >> r;
        --l;--r;
        bool good = ps[r] - ps[l] == r - l;
        cout << (good ? "YES\n" : "NO\n");
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    solve();
    return 0;
}