Problem:
Score : 200 points

Problem Statement

N friends of Takahashi has come to a theme park.

To ride the most popular roller coaster in the park, you must be at least K centimeters tall.

The i-th friend is h_i centimeters tall.

How many of the Takahashi's friends can ride the roller coaster?

Constraints

1 \le N \le 10^5

1 \le K \le 500

1 \le h_i \le 500

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N K
h_1 h_2 \ldots h_N

Output

Print the number of people among the Takahashi's friends who can ride the roller coaster.

Sample Input 1

4 150
150 140 100 200

Sample Output 1

2

Two of them can ride the roller coaster: the first and fourth friends.

Sample Input 2

1 500
499

Sample Output 2

0

Sample Input 3

5 1
100 200 300 400 500

Sample Output 3

5

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

// https://atcoder.jp/contests/abcXXX/tasks/abcXXX_x

#include <iostream>
#include <vector>
#include <tuple>
#include <algorithm>

using namespace std;
using ll = long long;
using ull = unsigned long long;
using pll = pair<ll, ll>;

void debug_out() {};
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cerr << " " << to_string(H);
    debug_out(T...);
}
#ifdef LOCAL
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 1
#endif

struct C1 {
        ll K_{};
    ll N_{};
    vector<ll> v_{};
    explicit C1(ll K, vector<ll> v) : K_(K), N_(v.size()), v_(move(v)){}
    ll resolve() {
        std::sort(v_.begin(), v_.end());
        auto s = lower_bound(v_.begin(), v_.end(), K_);
        auto num = distance(v_.begin(), s);
        return N_ - num;
    }
};

int main() {
    ll N, K;
    cin >> N >> K;
    vector<ll> v{};
    for (int i=0; i < N; ++i) {
        ll x;
        cin >> x;
        v.emplace_back(x);
    }
    C1 c{K, move(v)};
    cout << c.resolve() << endl;
    debug(c.resolve());
    return 0;
}