Submission #52643

#	Time	Username	Problem	Language	Result	Execution time	Memory
52643		ernestvw	New Home (APIO18_new_home)	C++11	0 / 100	5075 ms	44664 KiB

new_home

#include <bits/stdc++.h>
using namespace std;

const int oo = 1e9;

struct Store {
	int x, t, a, b;
	bool operator < (const Store other) {
		return a < other.a;
	}
};

struct Query {
	int l, y, i;
	bool operator < (const Query other) {
		return y < other.y;
	}
};

int n, k, q;
Store stores[400000];
int mini[400000];
int answer[400000];

void basicShit() {
	while(q--) {
		int l, y;
		cin >> l >> y;
		for(int i = 1; i <= k; i++) mini[i] = +oo;
		for(int i = 0; i < n; i++)
			if(stores[i].a <= y and y <= stores[i].b)
				mini[stores[i].t] = min(mini[stores[i].t], abs(l - stores[i].x));
		int inconvenience = 0;
		for(int i = 1; i <= k; i++) inconvenience = max(inconvenience, mini[i]);
		if(inconvenience == +oo) inconvenience = -1;
		cout << inconvenience << '\n';
	}
}

bool cmp(Store a,Store b){return a.b<b.b;}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL); cout.tie(NULL);

	cin >> n >> k >> q;
	for(int i = 0; i < n; i++) cin >> stores[i].x >> stores[i].t >> stores[i].a >> stores[i].b;
	
	vector<vector<Store>> S(k+1);
	for(int i = 0; i < n; i++)
		S[stores[i].t].push_back(stores[i]);
	
	vector<Query> queries(q);
	for(int i = 0; i < q; i++)
		cin >> queries[i].l >> queries[i].y, queries[i].i = i;
	
	for(int i = 1; i <= k; i++)
		sort(S[i].begin(), S[i].end());
	sort(queries.begin(), queries.end());

	vector<int> curMax(k+1, 0);
	vector<int> curIndex(k+1, 0);
	vector<set<int>> values(k+1);
	vector<vector<Store>> rem(k+1);
	for(int i = 0; i < n; i++) rem[stores[i].t].push_back(stores[i]);
	for(int i = 1; i <= k; i++) sort(rem[i].begin(), rem[i].end(), cmp);
	vector<int> curRem(k+1, 0);

	for(Query query : queries) {
		for(int i = 1; i <= k; i++) {
			while(curIndex[i] < (int)S[i].size() and S[i][curIndex[i]].a <= query.y) {
				curMax[i] = max(curMax[i], S[i][curIndex[i]].b);
				values[i].insert(S[i][curIndex[i]].x);
				curIndex[i]++;
			}
			while(curRem[i] < (int)rem[i].size() and rem[i][curRem[i]].b < query.y) {
				values[i].erase(rem[i][curRem[i]].x);
				curRem[i]++;
			}
		}
		int inconvenience = 0;
		for(int i = 1; i <= k; i++) {
			int ina = +oo;
			auto it = lower_bound(values[i].begin(), values[i].end(), query.l);
			if(it != values[i].end()) {
				ina = min(ina, abs(query.l - (*it)));
				if(it != values[i].begin()) {
					it--;
					ina = min(ina, abs(query.l - (*it)));
				}
			}
			if(values[i].size())
				ina = min(ina, abs(query.l - (*values[i].rbegin())));
			inconvenience = max(inconvenience, ina);
		}
		if(inconvenience == +oo) inconvenience = -1;
		answer[query.i] = inconvenience;
	}

	for(int i = 0; i < q; i++) cout << answer[i] << "\n";
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 10
• Subtask 4: 0 / 23
• Subtask 5: 0 / 35
• Subtask 6: 0 / 20