Submission #656572

#	Time	Username	Problem	Language	Result	Execution time	Memory
656572		haojiandan	도서관 (JOI18_library)	C++14	19 / 100	454 ms	452 KiB

library

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

int n,p[1010];
vector<int> g[1010];
int tot,d[1010];
void dfs(int u,int p) {
	d[++tot]=u;
	for (int &v : g[u]) if (v!=p) dfs(v,u);
}
void Solve(int _n) {
	n=_n;
	if (n==1) { Answer({1}); return; }
	for (int i=1;i<=n;i++) {
		for (int j=i+1;j<=n;j++) p[j]=j;
		random_shuffle(p+i+1,p+n+1);
		for (int j=i+1;j<=n&&(int)g[i].size()<2;j++) {
			vector<int> Q(n);
			Q[i-1]=Q[p[j]-1]=1;
			if (Query(Q)==1) g[i].push_back(p[j]),g[p[j]].push_back(i);
		}
	}
	int x;
	for (int i=1;i<=n;i++) if ((int)g[i].size()==1) { x=i; break; }
	dfs(x,0);
	vector<int> ans(n);
	for (int i=1;i<=n;i++) ans[i-1]=d[i];
	Answer(ans);
}

Compilation message (stderr)

library.cpp: In function 'void Solve(int)':
library.cpp:26:5: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
   26 |  dfs(x,0);
      |  ~~~^~~~~

• Subtask 1: 19 / 19
• Subtask 2: 0 / 81