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Submission #966332

# Submission time Handle Problem Language Result Execution time Memory
966332 2024-04-19T17:41:06 Z bachhoangxuan The Big Prize (IOI17_prize) C++17
20 / 100
 36 ms 7180 KB 
#include "prize.h"
#include<bits/stdc++.h>
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
int rand_int(int l,int r){
    return l+(int)(rng()%(r-l+1));
}
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<400;i++){
        int pos=rand_int(0,n-1);
        vector<int> cc=get(pos);
        if(cc[1]==0) return pos;
        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;
            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);
                    break;
                }
                if(cc[0]-query(p[mid])) r=mid-1;
                else l=mid+1;
            }
            cnt--;
        }
    }
	return -1;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6004 KB Output is correct
2 Correct 5 ms 5772 KB Output is correct
3 Correct 5 ms 6012 KB Output is correct
4 Correct 6 ms 5764 KB Output is correct
5 Correct 4 ms 6012 KB Output is correct
6 Correct 3 ms 5756 KB Output is correct
7 Correct 4 ms 6264 KB Output is correct
8 Correct 4 ms 6008 KB Output is correct
9 Correct 10 ms 5744 KB Output is correct
10 Correct 6 ms 5768 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6004 KB Output is correct
2 Correct 5 ms 6020 KB Output is correct
3 Correct 5 ms 6012 KB Output is correct
4 Correct 5 ms 6260 KB Output is correct
5 Correct 5 ms 6020 KB Output is correct
6 Correct 3 ms 5756 KB Output is correct
7 Correct 5 ms 6260 KB Output is correct
8 Correct 4 ms 6008 KB Output is correct
9 Correct 4 ms 6024 KB Output is correct
10 Correct 4 ms 6012 KB Output is correct
11 Correct 5 ms 6332 KB Output is correct
12 Correct 4 ms 5756 KB Output is correct
13 Correct 7 ms 6332 KB Output is correct
14 Correct 5 ms 6516 KB Output is correct
15 Correct 6 ms 6400 KB Output is correct
16 Correct 22 ms 6668 KB Output is correct
17 Correct 5 ms 6256 KB Output is correct
18 Correct 24 ms 6772 KB Output is correct
19 Correct 5 ms 5748 KB Output is correct
20 Correct 10 ms 6396 KB Output is correct
21 Correct 12 ms 6568 KB Output is correct
22 Correct 5 ms 6316 KB Output is correct
23 Correct 4 ms 5740 KB Output is correct
24 Correct 4 ms 5740 KB Output is correct
25 Correct 14 ms 6616 KB Output is correct
26 Correct 13 ms 6548 KB Output is correct
27 Correct 4 ms 6264 KB Output is correct
28 Correct 21 ms 6716 KB Output is correct
29 Correct 19 ms 6740 KB Output is correct
30 Correct 23 ms 6940 KB Output is correct
31 Correct 5 ms 6008 KB Output is correct
32 Correct 7 ms 6072 KB Output is correct
33 Correct 2 ms 5720 KB Output is correct
34 Correct 9 ms 6676 KB Output is correct
35 Correct 6 ms 6044 KB Output is correct
36 Correct 8 ms 6236 KB Output is correct
37 Correct 4 ms 6012 KB Output is correct
38 Correct 4 ms 6020 KB Output is correct
39 Correct 12 ms 6056 KB Output is correct
40 Correct 18 ms 6736 KB Output is correct
41 Correct 17 ms 6368 KB Output is correct
42 Correct 15 ms 6496 KB Output is correct
43 Correct 16 ms 6820 KB Output is correct
44 Correct 12 ms 6632 KB Output is correct
45 Correct 9 ms 6632 KB Output is correct
46 Correct 3 ms 6004 KB Output is correct
47 Correct 13 ms 6940 KB Output is correct
48 Correct 17 ms 6976 KB Output is correct
49 Correct 5 ms 6296 KB Output is correct
50 Correct 25 ms 6492 KB Output is correct
51 Correct 11 ms 6888 KB Output is correct
52 Correct 5 ms 6012 KB Output is correct
53 Correct 6 ms 6288 KB Output is correct
54 Correct 12 ms 6812 KB Output is correct
55 Correct 5 ms 6000 KB Output is correct
56 Correct 23 ms 6760 KB Output is correct
57 Correct 23 ms 6416 KB Output is correct
58 Correct 15 ms 6000 KB Output is correct
59 Correct 16 ms 6304 KB Output is correct
60 Correct 14 ms 6944 KB Output is correct
61 Correct 5 ms 6548 KB Output is correct
62 Correct 3 ms 6008 KB Output is correct
63 Correct 6 ms 6288 KB Output is correct
64 Correct 5 ms 6284 KB Output is correct
65 Correct 7 ms 6268 KB Output is correct
66 Correct 6 ms 6008 KB Output is correct
67 Correct 7 ms 6036 KB Output is correct
68 Correct 5 ms 6004 KB Output is correct
69 Correct 7 ms 6004 KB Output is correct
70 Correct 6 ms 6016 KB Output is correct
71 Correct 27 ms 7004 KB Output is correct
72 Correct 6 ms 6100 KB Output is correct
73 Correct 27 ms 6328 KB Output is correct
74 Correct 31 ms 6276 KB Output is correct
75 Correct 6 ms 6012 KB Output is correct
76 Correct 32 ms 6368 KB Output is correct
77 Correct 22 ms 7180 KB Output is correct
78 Correct 6 ms 6004 KB Output is correct
79 Correct 13 ms 6724 KB Output is correct
80 Correct 23 ms 7112 KB Output is correct
81 Correct 28 ms 6592 KB Output is correct
82 Correct 26 ms 6732 KB Output is correct
83 Correct 6 ms 6772 KB Output is correct
84 Correct 19 ms 6772 KB Output is correct
85 Correct 23 ms 6764 KB Output is correct
86 Correct 15 ms 6728 KB Output is correct
87 Correct 6 ms 6240 KB Output is correct
88 Correct 13 ms 6772 KB Output is correct
89 Correct 7 ms 6000 KB Output is correct
90 Correct 5 ms 6264 KB Output is correct
91 Correct 12 ms 6256 KB Output is correct
92 Correct 11 ms 6332 KB Output is correct
93 Incorrect 36 ms 6856 KB Integer -1 violates the range [0, 199999]
94 Halted 0 ms 0 KB -