제출 #115107

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
115107		E869120	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	5 ms	512 KiB

messy

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

int N; vector<int>ans;

void dfs(int cl, int cr) {
	if (cr - cl == 1) return;
	
	string str = ""; for (int i = 0; i < N; i++) str += "1";
	for (int i = cl; i < cr; i++) str[i] = '0';
	
	for (int i = cl; i < (cl + cr) / 2; i++) {
		string str2 = str; str2[i] = '1';
		add_element(str2);
	}
	dfs(cl, (cl + cr) / 2);
	dfs((cl + cr) / 2, cr);
}

void dfs2(int cl, int cr, vector<int>vec1, vector<int>vec2) {
	if (cr - cl == 1) { ans[vec1[0]] = cl; return; }
	
	vector<int>E1, E2;
	for (int i = 0; i < vec1.size(); i++) {
		string str = ""; for (int k = 0; k < N; k++) str += "0";
		for (int j = 0; j < vec2.size(); j++) str[vec2[j]] = '1';
		str[vec1[i]] = '1';
		
		if (check_element(str) == true) E1.push_back(vec1[i]);
		else E2.push_back(vec1[i]);
	}
	
	vector<int> G1 = vec2; for (int i = 0; i < E1.size(); i++) G1.push_back(E1[i]);
	vector<int> G2 = vec2; for (int i = 0; i < E2.size(); i++) G2.push_back(E2[i]);
	
	dfs2(cl, (cl + cr) / 2, E1, G2);
	dfs2((cl + cr) / 2, cr, E2, G1);
}

vector<int> restore_permutation(int n, int w, int r) {
	N = n; ans.resize(n, 0);
	dfs(0, n);
	compile_set();
	vector<int> alls; for (int i = 0; i < n; i++) alls.push_back(i);
	dfs2(0, n, alls, vector<int>{});
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

messy.cpp: In function 'void dfs2(int, int, std::vector<int>, std::vector<int>)':
messy.cpp:25:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < vec1.size(); i++) {
                  ~~^~~~~~~~~~~~~
messy.cpp:27:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int j = 0; j < vec2.size(); j++) str[vec2[j]] = '1';
                   ~~^~~~~~~~~~~~~
messy.cpp:34:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  vector<int> G1 = vec2; for (int i = 0; i < E1.size(); i++) G1.push_back(E1[i]);
                                         ~~^~~~~~~~~~~
messy.cpp:35:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  vector<int> G2 = vec2; for (int i = 0; i < E2.size(); i++) G2.push_back(E2[i]);
                                         ~~^~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 11 / 11
• Subtask 4: 21 / 21
• Subtask 5: 30 / 30