oj.uz

Submission #1025450

# Submission time Handle Problem Language Result Execution time Memory
1025450 2024-07-17T03:44:20 Z huutuan The Big Prize (IOI17_prize) C++14
97.66 / 100
 48 ms 10824 KB 
#include "prize.h"

#include <bits/stdc++.h>

using namespace std;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace __gnu_pbds;

template<class T>
using ordered_set=tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

vector<int> mem[200000];

vector<int> Ask(int i){
   if (mem[i].size()) return mem[i];
   return mem[i]=ask(i);
}

int find_best(int n) {
   for (int i=0; i<n; ++i) mem[i].clear();
   // if (n<=5000){
   //    for (int i=0; i<n; ++i){
   //       auto tmp=Ask(i);
   //       if (tmp[0]+tmp[1]==0) return i;
   //    }
   //    return -1;
   // }
   int m=n;
   int mx=0;
   while (m>1){
      m=(int)sqrt(m);
      mx+=m;
   }
   vector<pair<int, int>> v(mx);
   for (int i=0; i<mx; ++i){
      auto tmp=Ask(i);
      v[i]={tmp[0], tmp[1]};
      if (tmp[0]+tmp[1]==0) return i;
   }
   int cnt=0;
   for (auto &i:v) cnt=max(cnt, i.first+i.second);
   ordered_set<int> id;
   vector<int> st;
   for (int i=0; i<mx; ++i) if (v[i].first+v[i].second!=cnt) id.insert(i);
   for (int i=mx; i<n; ++i) st.push_back(i);
   auto solve=[&](auto &&self, vector<int> pos, int cc){
      if (!cc || pos.empty()) return;
      int mid=((int)pos.size()-1)/2;
      vector<int> posl, posr;
      for (int j:pos){
         if (j<pos[mid]) posl.push_back(j);
         if (j>pos[mid]) posr.push_back(j);
      }
      auto tmp=Ask(pos[mid]);
      if (tmp[0]+tmp[1]!=cnt){
         id.insert(pos[mid]);
         pos.erase(pos.begin()+mid);
         self(self, pos, cc-1);
         // int l=mid, r=mid;
         // while (l){
         //    --l;
         //    auto tmp2=Ask(pos[l]);
         //    if (tmp2[0]+tmp2[1]!=cnt) id.insert(pos[l]), posl.pop_back();
         //    else{
         //       int cl=tmp2[0]-id.order_of_key(pos[l]);
         //       int cr=tmp2[1]-((int)id.size()-id.order_of_key(pos[l]));
         //       self(self, posl, cl);
         //       self(self, posr, cr);
         //       return;
         //    }
         // }
         // reverse(posr.begin(), posr.end());
         // while (r+1<(int)pos.size()){
         //    ++r;
         //    auto tmp2=Ask(pos[r]);
         //    if (tmp2[0]+tmp2[1]!=cnt) id.insert(pos[r]), posr.pop_back();
         //    else{
         //       reverse(posr.begin(), posr.end());
         //       int cl=tmp2[0]-id.order_of_key(pos[r]);
         //       int cr=tmp2[1]-((int)id.size()-id.order_of_key(pos[r]));
         //       self(self, posl, cl);
         //       self(self, posr, cr);
         //       return;
         //    }
         // }
      }else{
         int cl=tmp[0]-id.order_of_key(pos[mid]);
         int cr=cc-cl;
         self(self, posl, cl);
         self(self, posr, cr);
      }
   };
   solve(solve, st, cnt-(int)id.size());
   for (int i:id){
      auto tmp=Ask(i);
      if (tmp[0]+tmp[1]==0) return i;
   }
   return -1;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9356 KB Output is correct
2 Correct 7 ms 9164 KB Output is correct
3 Correct 8 ms 9164 KB Output is correct
4 Correct 8 ms 9104 KB Output is correct
5 Correct 9 ms 9096 KB Output is correct
6 Correct 2 ms 4952 KB Output is correct
7 Correct 10 ms 9164 KB Output is correct
8 Correct 8 ms 9084 KB Output is correct
9 Correct 8 ms 9060 KB Output is correct
10 Correct 7 ms 9164 KB Output is correct

Subtask #2
77.66 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9164 KB Output is correct
2 Correct 7 ms 9164 KB Output is correct
3 Correct 9 ms 8980 KB Output is correct
4 Correct 8 ms 9164 KB Output is correct
5 Correct 7 ms 9164 KB Output is correct
6 Correct 2 ms 4952 KB Output is correct
7 Correct 10 ms 8956 KB Output is correct
8 Correct 11 ms 9164 KB Output is correct
9 Correct 7 ms 9164 KB Output is correct
10 Correct 7 ms 9096 KB Output is correct
11 Correct 13 ms 9164 KB Output is correct
12 Correct 11 ms 9096 KB Output is correct
13 Correct 10 ms 9156 KB Output is correct
14 Correct 10 ms 5468 KB Output is correct
15 Correct 29 ms 9484 KB Output is correct
16 Correct 44 ms 9104 KB Output is correct
17 Correct 3 ms 4952 KB Output is correct
18 Correct 31 ms 9308 KB Output is correct
19 Correct 4 ms 4952 KB Output is correct
20 Correct 16 ms 7372 KB Output is correct
21 Correct 32 ms 9164 KB Output is correct
22 Correct 34 ms 9156 KB Output is correct
23 Correct 12 ms 9088 KB Output is correct
24 Correct 13 ms 9100 KB Output is correct
25 Correct 40 ms 9244 KB Output is correct
26 Correct 34 ms 9500 KB Output is correct
27 Correct 11 ms 9128 KB Output is correct
28 Correct 32 ms 9664 KB Output is correct
29 Correct 32 ms 9472 KB Output is correct
30 Correct 35 ms 9292 KB Output is correct
31 Correct 4 ms 4952 KB Output is correct
32 Correct 12 ms 9076 KB Output is correct
33 Correct 1 ms 4952 KB Output is correct
34 Correct 41 ms 9516 KB Output is correct
35 Correct 10 ms 9080 KB Output is correct
36 Correct 37 ms 9108 KB Output is correct
37 Correct 15 ms 9084 KB Output is correct
38 Correct 10 ms 9164 KB Output is correct
39 Correct 38 ms 9524 KB Output is correct
40 Correct 43 ms 9692 KB Output is correct
41 Correct 35 ms 9220 KB Output is correct
42 Correct 30 ms 9420 KB Output is correct
43 Correct 48 ms 9280 KB Output is correct
44 Correct 42 ms 9412 KB Output is correct
45 Correct 29 ms 9164 KB Output is correct
46 Correct 4 ms 5204 KB Output is correct
47 Correct 41 ms 9456 KB Output is correct
48 Correct 31 ms 9320 KB Output is correct
49 Correct 43 ms 9920 KB Output is correct
50 Correct 33 ms 9160 KB Output is correct
51 Correct 39 ms 9324 KB Output is correct
52 Correct 35 ms 9420 KB Output is correct
53 Correct 9 ms 9164 KB Output is correct
54 Correct 38 ms 9428 KB Output is correct
55 Correct 4 ms 4952 KB Output is correct
56 Correct 30 ms 9304 KB Output is correct
57 Correct 37 ms 9272 KB Output is correct
58 Correct 34 ms 9344 KB Output is correct
59 Correct 44 ms 9200 KB Output is correct
60 Correct 30 ms 9164 KB Output is correct
61 Correct 8 ms 9164 KB Output is correct
62 Correct 14 ms 9164 KB Output is correct
63 Correct 9 ms 9164 KB Output is correct
64 Correct 13 ms 8908 KB Output is correct
65 Correct 7 ms 8908 KB Output is correct
66 Correct 11 ms 10700 KB Output is correct
67 Correct 16 ms 10688 KB Output is correct
68 Correct 3 ms 4952 KB Output is correct
69 Correct 14 ms 10824 KB Output is correct
70 Correct 10 ms 9676 KB Output is correct
71 Partially correct 33 ms 9212 KB Partially correct - number of queries: 5234
72 Correct 14 ms 9152 KB Output is correct
73 Partially correct 34 ms 9472 KB Partially correct - number of queries: 5171
74 Partially correct 35 ms 9240 KB Partially correct - number of queries: 5198
75 Correct 9 ms 9164 KB Output is correct
76 Correct 28 ms 9408 KB Output is correct
77 Correct 41 ms 9448 KB Output is correct
78 Correct 13 ms 9420 KB Output is correct
79 Correct 33 ms 9164 KB Output is correct
80 Correct 46 ms 9684 KB Output is correct
81 Correct 26 ms 9164 KB Output is correct
82 Correct 43 ms 9420 KB Output is correct
83 Correct 9 ms 9092 KB Output is correct
84 Correct 36 ms 9460 KB Output is correct
85 Correct 47 ms 9696 KB Output is correct
86 Correct 7 ms 9164 KB Output is correct
87 Correct 7 ms 8908 KB Output is correct
88 Correct 7 ms 9104 KB Output is correct
89 Correct 8 ms 9164 KB Output is correct
90 Correct 10 ms 8932 KB Output is correct
91 Correct 7 ms 8908 KB Output is correct
92 Correct 7 ms 9164 KB Output is correct
93 Correct 13 ms 9164 KB Output is correct
94 Correct 11 ms 9164 KB Output is correct
95 Correct 10 ms 9164 KB Output is correct
96 Correct 11 ms 9164 KB Output is correct
97 Correct 8 ms 9164 KB Output is correct