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Submission #966340

# Submission time Handle Problem Language Result Execution time Memory
966340 2024-04-19T17:49:08 Z bachhoangxuan The Big Prize (IOI17_prize) C++17
20 / 100
 54 ms 7208 KB 
#include "prize.h"
#include<bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

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;
    vector<int> ord(min(n,500));
    iota(ord.begin(),ord.end(),0);
    shuffle(ord.begin(),ord.end(),rng);
    for(int i=0;i<400;i++){
        vector<int> cc=get(ord[i]);
        if(cc[1]==0) return ord[i];
        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 4 ms 6012 KB Output is correct
2 Correct 5 ms 6268 KB Output is correct
3 Correct 5 ms 6012 KB Output is correct
4 Correct 5 ms 5768 KB Output is correct
5 Correct 5 ms 6272 KB Output is correct
6 Correct 3 ms 6008 KB Output is correct
7 Correct 4 ms 6012 KB Output is correct
8 Correct 4 ms 5760 KB Output is correct
9 Correct 5 ms 6016 KB Output is correct
10 Correct 5 ms 6032 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6012 KB Output is correct
2 Correct 5 ms 6276 KB Output is correct
3 Correct 4 ms 6012 KB Output is correct
4 Correct 5 ms 6024 KB Output is correct
5 Correct 4 ms 6012 KB Output is correct
6 Correct 3 ms 6016 KB Output is correct
7 Correct 4 ms 6016 KB Output is correct
8 Correct 4 ms 5760 KB Output is correct
9 Correct 4 ms 6016 KB Output is correct
10 Correct 5 ms 6032 KB Output is correct
11 Correct 5 ms 6084 KB Output is correct
12 Correct 4 ms 6264 KB Output is correct
13 Correct 6 ms 6344 KB Output is correct
14 Correct 4 ms 6008 KB Output is correct
15 Correct 5 ms 6072 KB Output is correct
16 Correct 16 ms 7164 KB Output is correct
17 Correct 3 ms 6008 KB Output is correct
18 Correct 26 ms 6436 KB Output is correct
19 Correct 1 ms 5752 KB Output is correct
20 Correct 8 ms 6416 KB Output is correct
21 Correct 10 ms 6668 KB Output is correct
22 Correct 5 ms 5988 KB Output is correct
23 Correct 3 ms 6008 KB Output is correct
24 Correct 3 ms 5756 KB Output is correct
25 Correct 18 ms 6320 KB Output is correct
26 Correct 13 ms 6816 KB Output is correct
27 Correct 4 ms 6008 KB Output is correct
28 Correct 24 ms 6720 KB Output is correct
29 Correct 17 ms 6476 KB Output is correct
30 Correct 20 ms 6924 KB Output is correct
31 Correct 3 ms 6004 KB Output is correct
32 Correct 7 ms 6048 KB Output is correct
33 Correct 1 ms 5720 KB Output is correct
34 Correct 11 ms 6548 KB Output is correct
35 Correct 5 ms 6060 KB Output is correct
36 Correct 6 ms 6440 KB Output is correct
37 Correct 4 ms 6272 KB Output is correct
38 Correct 3 ms 6012 KB Output is correct
39 Correct 12 ms 6316 KB Output is correct
40 Correct 23 ms 6496 KB Output is correct
41 Correct 14 ms 6372 KB Output is correct
42 Correct 15 ms 6632 KB Output is correct
43 Correct 15 ms 6312 KB Output is correct
44 Correct 9 ms 6408 KB Output is correct
45 Correct 9 ms 6460 KB Output is correct
46 Correct 3 ms 5756 KB Output is correct
47 Correct 11 ms 6684 KB Output is correct
48 Correct 15 ms 7208 KB Output is correct
49 Correct 6 ms 6016 KB Output is correct
50 Correct 26 ms 7140 KB Output is correct
51 Correct 12 ms 6312 KB Output is correct
52 Correct 3 ms 5760 KB Output is correct
53 Correct 5 ms 5796 KB Output is correct
54 Correct 13 ms 6120 KB Output is correct
55 Correct 3 ms 5752 KB Output is correct
56 Correct 21 ms 6724 KB Output is correct
57 Correct 23 ms 6276 KB Output is correct
58 Correct 15 ms 6504 KB Output is correct
59 Correct 15 ms 6412 KB Output is correct
60 Correct 17 ms 6384 KB Output is correct
61 Correct 5 ms 6036 KB Output is correct
62 Correct 4 ms 5756 KB Output is correct
63 Correct 5 ms 5792 KB Output is correct
64 Correct 4 ms 6048 KB Output is correct
65 Correct 6 ms 6020 KB Output is correct
66 Correct 6 ms 5776 KB Output is correct
67 Correct 10 ms 6276 KB Output is correct
68 Correct 2 ms 5748 KB Output is correct
69 Correct 6 ms 6028 KB Output is correct
70 Correct 7 ms 6024 KB Output is correct
71 Correct 22 ms 6536 KB Output is correct
72 Correct 6 ms 5788 KB Output is correct
73 Correct 22 ms 6760 KB Output is correct
74 Correct 25 ms 6796 KB Output is correct
75 Correct 5 ms 6284 KB Output is correct
76 Correct 23 ms 7016 KB Output is correct
77 Correct 20 ms 6768 KB Output is correct
78 Correct 6 ms 6516 KB Output is correct
79 Correct 12 ms 6524 KB Output is correct
80 Correct 16 ms 6516 KB Output is correct
81 Correct 36 ms 6268 KB Output is correct
82 Correct 24 ms 6792 KB Output is correct
83 Correct 7 ms 6532 KB Output is correct
84 Correct 23 ms 6488 KB Output is correct
85 Correct 19 ms 6776 KB Output is correct
86 Correct 7 ms 6360 KB Output is correct
87 Correct 6 ms 6008 KB Output is correct
88 Correct 7 ms 6012 KB Output is correct
89 Correct 11 ms 6448 KB Output is correct
90 Correct 5 ms 6012 KB Output is correct
91 Correct 8 ms 6260 KB Output is correct
92 Correct 7 ms 6004 KB Output is correct
93 Incorrect 54 ms 6388 KB Integer -1 violates the range [0, 199999]
94 Halted 0 ms 0 KB -