oj.uz

Submission #966352

# Submission time Handle Problem Language Result Execution time Memory
966352 2024-04-19T17:57:08 Z bachhoangxuan The Big Prize (IOI17_prize) C++17
20 / 100
 35 ms 7172 KB 
#include "prize.h"
#include<bits/stdc++.h>
using namespace std;

const int B = 500;
const int maxn = 2e5+5;

vector<int> res[maxn];
vector<int> get(int x){
    if(!res[x].empty()) return res[x];
    res[x]=ask(x);res[x][1]+=res[x][0];
    return res[x];
}

int N,bit[maxn],Max;
void update(int x){
    for(int i=x+1;i<=N;i+=(i&(-i))) bit[i]++;
}
int query(int x){
    int ans=0;
    for(int i=x+1;i>=1;i-=(i&(-i))) ans+=bit[i];
    return ans;
}

int find_best(int n){
    N=n;
    for(int i=0;i<min(n,425);i++){
        vector<int> cc=get(n-i-1);
        if(cc[1]==0) return n-i-1;
        Max=max(Max,cc[1]);
    }
    for(int i=0;i<n;i+=B){
        vector<int> p;
        for(int j=i;j<min(i+B,n);j++) p.push_back(j);
        int cnt=0;
        while(!p.empty()){
            int x=p.back();p.pop_back();
            vector<int> cc=get(x);
            if(cc[1]==0) return x;
            if(cc[1]<Max) update(x);
            else{
                cnt=cc[0]-query(x);
                break;
            }
        }
        while(cnt){
            int l=0,r=(int)p.size()-1;
            bool check=false;
            while(l<=r){
                int mid=(l+r)>>1;
                vector<int> cc=get(p[mid]);
                if(cc[1]==0) return p[mid];
                if(cc[1]<Max){
                    update(p[mid]);
                    p.erase(p.begin()+mid);
                    check=true;
                    break;
                }
                if(cc[0]-query(p[mid])) r=mid-1;
                else l=mid+1;
            }
            cnt--;
        }
    }
	return -1;
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:48:18: warning: variable 'check' set but not used [-Wunused-but-set-variable]
   48 |             bool check=false;
      |                  ^~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5996 KB Output is correct
2 Correct 5 ms 6012 KB Output is correct
3 Correct 4 ms 5992 KB Output is correct
4 Correct 2 ms 5720 KB Output is correct
5 Correct 4 ms 6004 KB Output is correct
6 Correct 3 ms 6004 KB Output is correct
7 Correct 5 ms 6008 KB Output is correct
8 Correct 5 ms 6264 KB Output is correct
9 Correct 6 ms 6252 KB Output is correct
10 Correct 6 ms 6264 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6256 KB Output is correct
2 Correct 5 ms 5996 KB Output is correct
3 Correct 5 ms 6260 KB Output is correct
4 Correct 1 ms 5720 KB Output is correct
5 Correct 5 ms 6256 KB Output is correct
6 Correct 3 ms 6000 KB Output is correct
7 Correct 4 ms 5756 KB Output is correct
8 Correct 6 ms 6248 KB Output is correct
9 Correct 4 ms 5764 KB Output is correct
10 Correct 6 ms 5996 KB Output is correct
11 Correct 5 ms 6252 KB Output is correct
12 Correct 4 ms 6000 KB Output is correct
13 Correct 6 ms 5744 KB Output is correct
14 Correct 4 ms 6244 KB Output is correct
15 Correct 9 ms 5992 KB Output is correct
16 Correct 18 ms 6708 KB Output is correct
17 Correct 3 ms 6004 KB Output is correct
18 Correct 3 ms 6000 KB Output is correct
19 Correct 3 ms 6004 KB Output is correct
20 Correct 9 ms 5992 KB Output is correct
21 Correct 9 ms 6668 KB Output is correct
22 Correct 5 ms 6304 KB Output is correct
23 Correct 4 ms 5992 KB Output is correct
24 Correct 4 ms 6008 KB Output is correct
25 Correct 13 ms 6388 KB Output is correct
26 Correct 13 ms 7088 KB Output is correct
27 Correct 4 ms 6232 KB Output is correct
28 Correct 27 ms 6452 KB Output is correct
29 Correct 19 ms 6496 KB Output is correct
30 Correct 35 ms 6536 KB Output is correct
31 Correct 3 ms 6000 KB Output is correct
32 Correct 7 ms 6072 KB Output is correct
33 Correct 2 ms 5740 KB Output is correct
34 Correct 8 ms 6468 KB Output is correct
35 Correct 4 ms 6288 KB Output is correct
36 Correct 7 ms 6044 KB Output is correct
37 Correct 5 ms 6268 KB Output is correct
38 Correct 4 ms 6000 KB Output is correct
39 Correct 11 ms 6624 KB Output is correct
40 Correct 18 ms 6764 KB Output is correct
41 Correct 14 ms 6236 KB Output is correct
42 Correct 16 ms 6668 KB Output is correct
43 Correct 18 ms 6476 KB Output is correct
44 Correct 9 ms 6208 KB Output is correct
45 Correct 10 ms 6124 KB Output is correct
46 Correct 3 ms 5752 KB Output is correct
47 Correct 10 ms 6728 KB Output is correct
48 Correct 25 ms 6284 KB Output is correct
49 Correct 4 ms 5796 KB Output is correct
50 Correct 32 ms 6416 KB Output is correct
51 Correct 11 ms 6556 KB Output is correct
52 Correct 4 ms 6000 KB Output is correct
53 Correct 8 ms 6000 KB Output is correct
54 Correct 14 ms 6400 KB Output is correct
55 Correct 3 ms 6000 KB Output is correct
56 Correct 25 ms 6996 KB Output is correct
57 Correct 21 ms 6472 KB Output is correct
58 Correct 24 ms 6608 KB Output is correct
59 Correct 15 ms 6108 KB Output is correct
60 Correct 11 ms 6560 KB Output is correct
61 Correct 5 ms 5996 KB Output is correct
62 Correct 4 ms 5744 KB Output is correct
63 Correct 7 ms 5992 KB Output is correct
64 Correct 5 ms 6280 KB Output is correct
65 Correct 2 ms 5720 KB Output is correct
66 Correct 2 ms 5720 KB Output is correct
67 Correct 5 ms 5760 KB Output is correct
68 Correct 6 ms 6508 KB Output is correct
69 Correct 2 ms 5716 KB Output is correct
70 Correct 3 ms 5740 KB Output is correct
71 Correct 25 ms 6748 KB Output is correct
72 Correct 7 ms 6020 KB Output is correct
73 Correct 25 ms 6316 KB Output is correct
74 Correct 23 ms 6796 KB Output is correct
75 Correct 6 ms 6004 KB Output is correct
76 Correct 22 ms 6744 KB Output is correct
77 Correct 27 ms 6956 KB Output is correct
78 Correct 7 ms 6512 KB Output is correct
79 Correct 17 ms 6764 KB Output is correct
80 Correct 18 ms 6508 KB Output is correct
81 Correct 29 ms 6876 KB Output is correct
82 Correct 26 ms 7172 KB Output is correct
83 Correct 6 ms 5996 KB Output is correct
84 Correct 18 ms 6656 KB Output is correct
85 Correct 28 ms 6708 KB Output is correct
86 Incorrect 23 ms 6880 KB Integer -1 violates the range [0, 199999]
87 Halted 0 ms 0 KB -