Submission #118863

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
118863	2019-06-20 00:07:55	tmwilliamlin168	Minerals (JOI19_minerals)	C++14	100 / 100	71 ms	3372 KiB

minerals

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#include "minerals.h"
#include <bits/stdc++.h>
using namespace std;
bool qry(int x) {
  static int lst=0;
  int ans=Query(x), c=lst^ans;
  lst=ans;
  return c;
}
void solve(vector<int> l, vector<int> r, bool f) {
  int n=l.size(), m=floor(0.35*n);
  if(n<2) {
    Answer(l[0], r[0]);
    return;
  }
  if(f) {
    m=n-m-2;
    for(int i=n-1; i>m; --i)
      qry(l[i]);
  } else
    for(int i=0; i<=m; ++i)
      qry(l[i]);
  vector<int> v[2];
  random_shuffle(r.begin(), r.end());
  for(int x : r)
    v[v[0].size()>m||v[1].size()<n-m-1&&qry(x)].push_back(x);
  solve(vector<int>(l.begin(), l.begin()+m+1), v[0], 1);
  solve(vector<int>(l.begin()+m+1, l.end()), v[1], 0);
 
 
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Compilation message (stderr)

minerals.cpp: In function 'void solve(std::vector<int>, std::vector<int>, bool)':
minerals.cpp:28:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   v[v[0].size()>m||v[1].size()<n-m-1&&qry(x)].push_back(x);
     ~~~~~~~~~~~^~
minerals.cpp:28:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   v[v[0].size()>m||v[1].size()<n-m-1&&qry(x)].push_back(x);
                    ~~~~~~~~~~~^~~~~~
minerals.cpp:28:37: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   v[v[0].size()>m||v[1].size()<n-m-1&&qry(x)].push_back(x);
                    ~~~~~~~~~~~~~~~~~^~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
• Subtask 4: 30 / 30
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
• Subtask 7: 5 / 5
• Subtask 8: 5 / 5
• Subtask 9: 10 / 10