Submission #522432

#	Time	Username	Problem	Language	Result	Execution time	Memory
522432		ntabc05101	popa (BOI18_popa)	C++14	100 / 100	96 ms	288 KiB

popa

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

#define taskname ""

int solve(int N, int *Left, int *Right) {
	for (int i = 0; i < N; i++) {
		Left[i] = Right[i] = -1;
	}

	vector<int> st(1, 0);
	for (int i = 1; i < N; i++) {
		int y = -1;
		while (!st.empty()) {
			int x = st.back();
			while (~Left[x]) {
				x = Left[x];
			}

			if (query(st.back(), st.back(), x, i)) {
				break;
			}
			y = st.back(); st.pop_back();
		}

		if (!st.empty()) {
			Right[st.back()] = i;
		}
		Left[i] = y;
		st.push_back(i);
	}	

	while (st.size() > 1) {
		st.pop_back();
	}
	return st.back();
}

• Subtask 1: 37 / 37
• Subtask 2: 24 / 24
• Subtask 3: 39 / 39