Submission #1256151

#	Time	Username	Problem	Language	Result	Execution time	Memory
1256151		gelastropod	popa (BOI18_popa)	C++20	100 / 100	26 ms	424 KiB

popa

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

int solve(int N, int* Left, int* Right) {
	stack<int> stk;
	stk.push(0);
	for (int i = 0; i < N; i++) Left[i] = -1, Right[i] = -1;
	for (int i = 1; i < N; i++) {
		int prev = -1;
		while (stk.size() && query(stk.top(), i, i, i)) prev = stk.top(), stk.pop();
		Left[i] = prev;
		if (stk.size()) Right[stk.top()] = i;
		stk.push(i);
	}
	while (stk.size() > 1) stk.pop();
	return stk.top();
}

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