oj.uz

답안 #966348

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
966348 2024-04-19T17:53:53 Z bachhoangxuan 커다란 상품 (IOI17_prize) C++17
95.87 / 100
 34 ms 7168 KB 
#include "prize.h"
#include<bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int B = 600;
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<500;i++){
        vector<int> cc=get(i);
        if(cc[1]==0) return 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;
            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:52:18: warning: variable 'check' set but not used [-Wunused-but-set-variable]
   52 |             bool check=false;
      |                  ^~~~~

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 6012 KB Output is correct
2 Correct 7 ms 5984 KB Output is correct
3 Correct 4 ms 6012 KB Output is correct
4 Correct 5 ms 6028 KB Output is correct
5 Correct 7 ms 6524 KB Output is correct
6 Correct 1 ms 5720 KB Output is correct
7 Correct 4 ms 5784 KB Output is correct
8 Correct 4 ms 6012 KB Output is correct
9 Correct 5 ms 6032 KB Output is correct
10 Correct 8 ms 5756 KB Output is correct

Subtask #2
75.87 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 6016 KB Output is correct
2 Correct 6 ms 6260 KB Output is correct
3 Correct 4 ms 6284 KB Output is correct
4 Correct 5 ms 5784 KB Output is correct
5 Correct 4 ms 6012 KB Output is correct
6 Correct 1 ms 5716 KB Output is correct
7 Correct 6 ms 6024 KB Output is correct
8 Correct 5 ms 6268 KB Output is correct
9 Correct 4 ms 6036 KB Output is correct
10 Correct 5 ms 6036 KB Output is correct
11 Correct 6 ms 5760 KB Output is correct
12 Correct 3 ms 6020 KB Output is correct
13 Correct 6 ms 5756 KB Output is correct
14 Correct 4 ms 6004 KB Output is correct
15 Correct 6 ms 6160 KB Output is correct
16 Correct 22 ms 6380 KB Output is correct
17 Correct 4 ms 6016 KB Output is correct
18 Correct 29 ms 6944 KB Output is correct
19 Correct 4 ms 6016 KB Output is correct
20 Correct 8 ms 5892 KB Output is correct
21 Correct 9 ms 6868 KB Output is correct
22 Correct 8 ms 5988 KB Output is correct
23 Correct 3 ms 5764 KB Output is correct
24 Correct 4 ms 5760 KB Output is correct
25 Correct 13 ms 6508 KB Output is correct
26 Correct 14 ms 6304 KB Output is correct
27 Correct 5 ms 6032 KB Output is correct
28 Correct 24 ms 6540 KB Output is correct
29 Correct 16 ms 6476 KB Output is correct
30 Correct 28 ms 6968 KB Output is correct
31 Correct 3 ms 5756 KB Output is correct
32 Correct 6 ms 6280 KB Output is correct
33 Correct 2 ms 5720 KB Output is correct
34 Correct 9 ms 6320 KB Output is correct
35 Correct 5 ms 6028 KB Output is correct
36 Correct 8 ms 6676 KB Output is correct
37 Correct 5 ms 5804 KB Output is correct
38 Correct 4 ms 6008 KB Output is correct
39 Correct 12 ms 6220 KB Output is correct
40 Correct 23 ms 7168 KB Output is correct
41 Correct 13 ms 6052 KB Output is correct
42 Correct 13 ms 6716 KB Output is correct
43 Correct 13 ms 6428 KB Output is correct
44 Correct 10 ms 6212 KB Output is correct
45 Correct 11 ms 6312 KB Output is correct
46 Correct 3 ms 6004 KB Output is correct
47 Correct 10 ms 6484 KB Output is correct
48 Correct 16 ms 6508 KB Output is correct
49 Correct 6 ms 6564 KB Output is correct
50 Correct 29 ms 6484 KB Output is correct
51 Correct 9 ms 6680 KB Output is correct
52 Correct 4 ms 6264 KB Output is correct
53 Correct 5 ms 5776 KB Output is correct
54 Correct 12 ms 6396 KB Output is correct
55 Correct 3 ms 6016 KB Output is correct
56 Correct 25 ms 6756 KB Output is correct
57 Correct 19 ms 6900 KB Output is correct
58 Correct 16 ms 6520 KB Output is correct
59 Correct 14 ms 6300 KB Output is correct
60 Correct 15 ms 6504 KB Output is correct
61 Correct 5 ms 6288 KB Output is correct
62 Correct 4 ms 6008 KB Output is correct
63 Correct 5 ms 6024 KB Output is correct
64 Correct 5 ms 6288 KB Output is correct
65 Correct 5 ms 6052 KB Output is correct
66 Correct 6 ms 6040 KB Output is correct
67 Correct 7 ms 6288 KB Output is correct
68 Correct 4 ms 6012 KB Output is correct
69 Correct 7 ms 6284 KB Output is correct
70 Correct 7 ms 6276 KB Output is correct
71 Partially correct 34 ms 6272 KB Partially correct - number of queries: 5413
72 Correct 6 ms 6292 KB Output is correct
73 Partially correct 25 ms 6796 KB Partially correct - number of queries: 5350
74 Partially correct 29 ms 6396 KB Partially correct - number of queries: 5377
75 Correct 6 ms 6044 KB Output is correct
76 Correct 20 ms 6556 KB Output is correct
77 Correct 24 ms 6344 KB Output is correct
78 Correct 7 ms 6516 KB Output is correct
79 Correct 15 ms 6768 KB Output is correct
80 Correct 26 ms 6528 KB Output is correct
81 Correct 19 ms 6520 KB Output is correct
82 Correct 24 ms 6820 KB Output is correct
83 Correct 6 ms 6008 KB Output is correct
84 Correct 18 ms 6776 KB Output is correct
85 Correct 27 ms 6600 KB Output is correct
86 Correct 6 ms 6160 KB Output is correct
87 Correct 5 ms 5756 KB Output is correct
88 Correct 6 ms 6008 KB Output is correct
89 Correct 5 ms 6260 KB Output is correct
90 Correct 5 ms 6516 KB Output is correct
91 Correct 6 ms 6004 KB Output is correct
92 Correct 5 ms 6012 KB Output is correct
93 Correct 6 ms 5856 KB Output is correct
94 Correct 6 ms 6048 KB Output is correct
95 Correct 7 ms 6828 KB Output is correct
96 Correct 7 ms 6092 KB Output is correct
97 Correct 6 ms 5800 KB Output is correct