제출 #207074

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
207074		autumn_eel	Unscrambling a Messy Bug (IOI16_messy)	C++14	38 / 100	5 ms	376 KiB

messy

#include "messy.h"
#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;
typedef pair<int,int>P;

vector<int> restore_permutation(int n, int w, int r) {
	if(n<=32){
		rep(i,n){
			string s;
			rep(j,n){
				if(j<=i)s+='0';
				else s+='1';
			}
			add_element(s);
		}
		compile_set();
		vector<int>v(n),p(n);//p[v[i]]=i
		random_device rnd;
		rep(i,n){
			string s(n,'1');
			rep(j,i)s[v[j]]='0';
			vector<int>c;
			rep(j,n){
				if(s[j]=='1')c.push_back(j);
			}
			shuffle(c.begin(),c.end(),rnd);
			rep(k,c.size()){
				int j=c[k];
				if(s[j]=='0')continue;
				s[j]='0';
				if(check_element(s)){
					v[i]=j;break;
				}
				s[j]='1';
			}
		}
		rep(i,n){
			p[v[i]]=i;
		}
		return p;
	}
	return {};
}

컴파일 시 표준 에러 (stderr) 메시지

messy.cpp: In function 'std::vector<int> restore_permutation(int, int, int)':
messy.cpp:3:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,n)for(int i=0;i<(n);i++)
                              ^
messy.cpp:28:4: note: in expansion of macro 'rep'
    rep(k,c.size()){
    ^~~

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 0 / 11
• Subtask 4: 0 / 21
• Subtask 5: 0 / 30