Submission #120014

#	Time	Username	Problem	Language	Result	Execution time	Memory
120014		E869120	Editor (BOI15_edi)	C++14	15 / 100	3044 ms	34616 KiB

edi

#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <queue>
#include <functional>
using namespace std;
#pragma warning (disable: 4996)

int N, A[1 << 19], G[1 << 19], level[1 << 19], par[1 << 19], maxlevel = 0;
vector<int>I[1 << 19];
set<int>Set;
priority_queue<int, vector<int>, less<int>> Q;

int main() {
	scanf("%d", &N);
	for (int i = 1; i <= N; i++) {
		scanf("%d", &A[i]);
		level[i] = max(0, -A[i]);
		maxlevel = max(maxlevel, level[i]);
		I[level[i]].push_back(i);
	}
	for (int i = 1; i <= N; i++) Set.insert(i);
	for (int i = maxlevel; i >= 1; i--) {
		set<int>Set2;
		for (int j = 0; j < I[i].size(); j++) {
			auto itr = Set.lower_bound(I[i][j]);
			if (itr != Set.end() && (*itr) == I[i][j]) {
				Set.erase(I[i][j]);
				Set2.insert(I[i][j]);
			}
		}
		for (int j = 0; j < I[i].size(); j++) {
			auto itr = Set.lower_bound(I[i][j]); itr--;
			par[I[i][j]] = (*itr);
			
			auto itr2 = Set2.lower_bound(I[i][j]);
			if (itr2 != Set2.end() && (*itr2) == I[i][j]) Set.erase(par[I[i][j]]);
		}
	}
	Q.push(0); G[0] = 1;
	for (int i = 1; i <= N; i++) {
		if (A[i] > 0) {
			G[i] = 1; Q.push(i);
		}
		else {
			G[i] = 1; int cx = i;
			while (par[cx] != 0) { cx = par[cx]; G[cx] ^= 1; }
			Q.push(cx);
			while (!Q.empty()) { int pos = Q.top(); if (G[pos] == 0) Q.pop(); else break; }
		}
		int ans = Q.top();
		printf("%d\n", A[ans]);
	}
	return 0;
}

Compilation message (stderr)

edi.cpp:8:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning (disable: 4996)
 
edi.cpp: In function 'int main()':
edi.cpp:26:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int j = 0; j < I[i].size(); j++) {
                   ~~^~~~~~~~~~~~~
edi.cpp:33:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int j = 0; j < I[i].size(); j++) {
                   ~~^~~~~~~~~~~~~
edi.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
edi.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &A[i]);
   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 15 / 15
• Subtask 3: 0 / 28
• Subtask 4: 0 / 37