Submission #59153

#	Time	Username	Problem	Language	Result	Execution time	Memory
59153		aome	Robots (IOI13_robots)	C++17	100 / 100	2667 ms	39192 KiB

robots

#include "robots.h"

#include <bits/stdc++.h>

using namespace std;

const int N = 1000005;

int P[N];

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
	for (int i = 0; i < T; ++i) P[i] = i;
	sort(X, X + A);
	sort(Y, Y + B);
	sort(P, P + T, [&] (int x, int y) {
		return W[x] < W[y];
	});
	int l = 1, r = T;
	while (l < r) {
		int mid = (l + r) >> 1;
		int ptr = 0;
		priority_queue<int> pq;
		for (int i = 0; i < A; ++i) {
			while (ptr < T && W[P[ptr]] < X[i]) pq.push(S[P[ptr++]]);
			int cur = mid;
			while (cur && pq.size()) pq.pop(), cur--;
		}
		while (ptr < T) pq.push(S[P[ptr++]]);
		for (int i = B - 1; i >= 0; --i) {
			int cur = mid;
			while (cur && pq.size() && pq.top() < Y[i]) {
				pq.pop(), cur--;
			}
		}
		if (pq.size()) l = mid + 1;
		else r = mid;
	}
	int ptr = 0;
	priority_queue<int> pq;
	for (int i = 0; i < A; ++i) {
		while (ptr < T && W[P[ptr]] < X[i]) pq.push(S[P[ptr++]]);
		int cur = l;
		while (cur && pq.size()) pq.pop(), cur--;
	}
	while (ptr < T) pq.push(S[P[ptr++]]);
	for (int i = B - 1; i >= 0; --i) {
		int cur = l;
		while (cur && pq.size() && pq.top() < Y[i]) {
			pq.pop(), cur--;
		}
	}
	if (pq.size() == 0) return l;
	return -1;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 25 / 25
• Subtask 4: 37 / 37
• Subtask 5: 10 / 10