Submission #656586

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
656586	2022-11-08 02:09:19	haojiandan	Library (JOI18_library)	C++14	100 / 100	443 ms	312 KiB

library

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#include <bits/stdc++.h>
#include "library.h"
using namespace std;
int n,p[1010],tot;
int d[1010],vis[1010];
void Solve(int _n) {
  n=_n;
  if (n==1) { Answer({1}); return; }
  int x=-1;
  for (int i=1;i<=n;i++) {
    vector<int> Q(n);
    for (int j=1;j<=n;j++) Q[j-1]=1;
    Q[i-1]=0;
    if (Query(Q)==1) { x=i; break; }
  }
  d[1]=x,vis[x]=1;
  for (int i=2;i<=n;i++) {
    tot=0;
    for (int j=1;j<=n;j++) if (!vis[j]) p[++tot]=j;
    if (tot==1) { d[i]=p[1]; continue; }
    int l=1,r=tot,mid,res=-1;
    while (l<=r) {
      vector<int> Q(n);
      for (int j=1;j<=n;j++) Q[j-1]=0;
      int mid=(l+r)>>1;
      for (int j=1;j<=mid;j++) Q[p[j]-1]=1;
      int tmp=Query(Q);
      Q[d[i-1]-1]=1;
      tmp=abs(tmp-Query(Q));
 
 
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Compilation message (stderr)

library.cpp: In function 'void Solve(int)':
library.cpp:22:17: warning: unused variable 'mid' [-Wunused-variable]
   22 |   int l=1,r=tot,mid,res=-1;
      |                 ^~~

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