#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using vi = vector<int>;
using vll = vector<ll>;

int main()
{
    ios::sync_with_stdio(false); cin.tie(nullptr);

    int n, q;
    cin >> n >> q;
    vi freq (n);
    for (auto & x: freq) cin >> x;
    int l, r;
    for (int i = 0; i < q; ++i)
    {
        cin >> l >> r;
        int val = numeric_limits<int>::min();
        bool valid = true;
        for (int j = l - 1; j < r; ++j)
        {
            if (freq[j] >= val) val = freq[j];
            else
            {
                valid = false;
                break;
            }
        }
        if (valid) cout << "YES" << endl;
        else cout << "NO" << endl;
    }
}