#include <iostream>
#include <vector>
void print_yes(){
	std::cout << "YES" << '\n';
}

void print_no(){
	std::cout << "NO" << '\n';
}


int main() {
	int arr_size;
	int queries;
	std::cin >> arr_size >> queries;

	std::vector<int> arr{};
	arr.reserve(arr_size);

	int num;
	int decr = 0;
	int last;

	std::cin >> last;
	arr.push_back(0);

	for (int i = 1; i < arr_size; i++){
		std::cin >> num;

		if (last <= num){ 
			decr ++;
		}else{
			decr = 0;
		}

		arr.push_back(decr);

		last = num;
	}

	int s;
	int e;
	for (int i = 0; i < queries; i++){
		std::cin >> s >> e;	
		int range = e - s;
		if (arr[e - 1] == range){
			print_yes();
		}
		else {
			print_no();
		}
	}


	return 0;
}