oj.uz

답안 #620210

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
620210 2022-08-03T03:46:03 Z joelau Road Construction (JOI21_road_construction) C++14
100 / 100
 5719 ms 30988 KB 
#include <bits/stdc++.h>
using namespace std;

long long N,K, ft[250005];
pair<long long,long long> A[250005];
vector< tuple<long long,long long,long long> > lst;
vector<long long> dis,ans;
set< pair<long long,long long> > s;

void update (long long x, long long v) {
	x++;
	while (x <= N) ft[x] += v, x += x & -x;
}

long long query (long long x) {
	x++;
	long long ans = 0;
	while (x) ans += ft[x], x -= x & -x;
	return ans;
}

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	cin >> N >> K;
	for (long long i = 0; i < N; ++i) {
		long long x,y; cin >> x >> y;
		A[i] = make_pair(x-y,x+y);
		dis.push_back(x+y);
	}
	sort(dis.begin(),dis.end());
	dis.resize(unique(dis.begin(),dis.end()) - dis.begin());
	long long low = 0, high = 4e9+5;
	while (high-low > 1) {
		long long mid = (low+high)/2;
		lst.clear();
		for (long long i = 0; i < N; ++i) {
			long long n = lower_bound(dis.begin(),dis.end(),A[i].second) - dis.begin();
			lst.emplace_back(A[i].first,0,n);
			lst.emplace_back(A[i].first+mid,1,n);
		}
		sort(lst.begin(),lst.end());
		for (long long i = 0; i <= N; ++i) ft[i] = 0;
		long long cnt = 0;
		for (auto x: lst) {
			long long a,b,c; tie(a,b,c) = x;
			if (b == 0) {
				long long n = lower_bound(dis.begin(),dis.end(),dis[c]-mid) - dis.begin();
				long long m = upper_bound(dis.begin(),dis.end(),dis[c]+mid) - dis.begin() - 1;
				cnt += query(m) - query(n-1);
				update(c,1);
			}
			else update(c,-1);
		}
		if (cnt >= K) high = mid;
		else low = mid;
	}
	lst.clear();
	for (long long i = 0; i < N; ++i) {
		long long n = lower_bound(dis.begin(),dis.end(),A[i].second) - dis.begin();
		lst.emplace_back(A[i].first,0,n);
		lst.emplace_back(A[i].first+low,1,n);
	}
	sort(lst.begin(),lst.end());
	for (auto x: lst) {
		long long a,b,c; tie(a,b,c) = x;
		if (b == 0) {
			long long n = lower_bound(dis.begin(),dis.end(),dis[c]-low) - dis.begin();
			auto it = s.lower_bound(make_pair(n,-4e18));
			while (it != s.end() && abs(dis[it->first]-dis[c]) <= low) {
				ans.push_back(max(abs(dis[it->first]-dis[c]),abs(it->second-a)));
				it++;
			}
			s.emplace(c,a);
		}
		else s.erase(make_pair(c,a-low));
	}
	sort(ans.begin(),ans.end());
	for (long long x: ans) cout << x << '\n';
	for (long long i = ans.size(); i < K; ++i) cout << high << '\n';
	
	return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 5048 KB Output is correct
2 Correct 50 ms 5116 KB Output is correct
3 Correct 44 ms 5072 KB Output is correct
4 Correct 42 ms 5216 KB Output is correct
5 Correct 44 ms 3896 KB Output is correct
6 Correct 8 ms 468 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3857 ms 25064 KB Output is correct
2 Correct 3900 ms 28072 KB Output is correct
3 Correct 45 ms 5056 KB Output is correct
4 Correct 4011 ms 27920 KB Output is correct
5 Correct 3949 ms 28080 KB Output is correct
6 Correct 3773 ms 28172 KB Output is correct
7 Correct 3792 ms 27528 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5253 ms 21400 KB Output is correct
2 Correct 5232 ms 21412 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 3678 ms 21420 KB Output is correct
5 Correct 3105 ms 21444 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5253 ms 21400 KB Output is correct
2 Correct 5232 ms 21412 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 3678 ms 21420 KB Output is correct
5 Correct 3105 ms 21444 KB Output is correct
6 Correct 5175 ms 21352 KB Output is correct
7 Correct 5305 ms 26396 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 5226 ms 26480 KB Output is correct
11 Correct 3680 ms 24256 KB Output is correct
12 Correct 3085 ms 26724 KB Output is correct

Subtask #5
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 5048 KB Output is correct
2 Correct 50 ms 5116 KB Output is correct
3 Correct 44 ms 5072 KB Output is correct
4 Correct 42 ms 5216 KB Output is correct
5 Correct 44 ms 3896 KB Output is correct
6 Correct 8 ms 468 KB Output is correct
7 Correct 2023 ms 16232 KB Output is correct
8 Correct 2023 ms 16216 KB Output is correct
9 Correct 42 ms 5216 KB Output is correct
10 Correct 1930 ms 15460 KB Output is correct
11 Correct 1844 ms 15324 KB Output is correct
12 Correct 1126 ms 12960 KB Output is correct
13 Correct 1169 ms 14784 KB Output is correct

Subtask #6
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 5048 KB Output is correct
2 Correct 50 ms 5116 KB Output is correct
3 Correct 44 ms 5072 KB Output is correct
4 Correct 42 ms 5216 KB Output is correct
5 Correct 44 ms 3896 KB Output is correct
6 Correct 8 ms 468 KB Output is correct
7 Correct 3857 ms 25064 KB Output is correct
8 Correct 3900 ms 28072 KB Output is correct
9 Correct 45 ms 5056 KB Output is correct
10 Correct 4011 ms 27920 KB Output is correct
11 Correct 3949 ms 28080 KB Output is correct
12 Correct 3773 ms 28172 KB Output is correct
13 Correct 3792 ms 27528 KB Output is correct
14 Correct 5253 ms 21400 KB Output is correct
15 Correct 5232 ms 21412 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 3678 ms 21420 KB Output is correct
18 Correct 3105 ms 21444 KB Output is correct
19 Correct 5175 ms 21352 KB Output is correct
20 Correct 5305 ms 26396 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 5226 ms 26480 KB Output is correct
24 Correct 3680 ms 24256 KB Output is correct
25 Correct 3085 ms 26724 KB Output is correct
26 Correct 2023 ms 16232 KB Output is correct
27 Correct 2023 ms 16216 KB Output is correct
28 Correct 42 ms 5216 KB Output is correct
29 Correct 1930 ms 15460 KB Output is correct
30 Correct 1844 ms 15324 KB Output is correct
31 Correct 1126 ms 12960 KB Output is correct
32 Correct 1169 ms 14784 KB Output is correct
33 Correct 5647 ms 30988 KB Output is correct
34 Correct 5719 ms 30868 KB Output is correct
35 Correct 5360 ms 30224 KB Output is correct
36 Correct 3038 ms 28572 KB Output is correct
37 Correct 3004 ms 28428 KB Output is correct
38 Correct 3172 ms 29728 KB Output is correct