666

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main() {
    int n, s, b;
    cin >> n >> s >> b;
    vector<int> nums(n);
    for(int i = 0; i < n; i++) {
        cin >> nums[i];
    }
    int max_num = nums[0];
    for(int num : nums) {
        if(num > max_num) {
            max_num = num;
        }
    }
    if(max_num > nums.back()) {
        cout << "YES" << endl;
    } else {
        cout << "NO" << endl;
    }
    return 0;
}

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