Submission #4027114

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Source Code Expand

#include "bits/stdc++.h"

using namespace std;

using ll = long long;
using ld = long double;

const double PI = 3.1415926535897932384626433832795;

const int dx[] = { 0, 1, 0, -1 };
const int dy[] = { -1, 0, 1, 0 };

int gcd(int x, int y) { return y ? gcd(y, x % y) : abs(x); }
ll gcd(ll x, ll y) { return y ? gcd(y, x % y) : abs(x); }
int lcm(int x, int y) { return x / gcd(x, y) * y; }
ll lcm(ll x, ll y) { return x / gcd(x, y) * y; }

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

	ll n, k;
	cin >> n >> k;

	vector<ll> a(n);
	for (auto &v : a) {
		cin >> v;
	}
	sort(begin(a), end(a), greater<ll>());

	ll score = 0, ans = n;
	for (int i = 0; i < (int)a.size(); i++) {
		if (a[i] >= k) {
			continue;
		}

		score += a[i];
		if (score >= k) {
			ans = n - (i + 1);
			break;
		}
	}

	cout << ans << endl;
	return 0;
}

Submission Info

Judge Result