제출 #1328025

#제출 시각아이디문제언어결과실행 시간메모리
1328025viduxRoom Temperature (JOI24_ho_t1)C++17
100 / 100
619 ms27816 KiB
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	ll n, t; cin >> n >> t;
	vector<ll> a(n);
	for (auto &i : a) cin >> i;
	for (auto &i : a) i %= t;
	set<ll> s(a.begin(), a.end());
	ll ans = 1e18;
	for (int i = 0; i < 3*n; i++) {
		ll l = *s.begin();
		ll r = *s.rbegin();
		ans = min(ans, r-l);
		s.erase(l);
		s.insert(l+t);
	}
	cout << (ans+1)/2 << endl;
}
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