oj.uz

Submission #901906

# Submission time Handle Problem Language Result Execution time Memory
901906 2024-01-10T03:34:14 Z ForgottenDestiny Exhibition (JOI19_ho_t2) C++17
100 / 100
 661 ms 6740 KB 
#include <bits/stdc++.h>
using namespace std;

int n;
vector<int> seg;

void build() {
    for(int i=n-1;i>0;i--) seg[i]=max(seg[i<<1],seg[i<<1|1]);
}


void modify(int p, int value) {
    for(seg[p+=n]=value;p>1;p>>=1) seg[p>>1]=max(seg[p],seg[p^1]); 
}

int query(int l, int r){ // remember, this works over range [l,r)
    int res=-1;
    for(l+=n,r+=n;l<r;l>>=1,r>>=1){
        if(l&1) res=max(res,seg[l++]); //remember, this needs to be l++, ++l will WA
        if(r&1) res=max(res,seg[--r]); 
    }
    return res;
}


int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int m;
    cin>>n>>m;
    vector<pair<int,int>> pics(n);
    seg.resize(2*n);
    vector<int> frames(m);
    for (int i=0;i<n;i++){
        int a,b;
        cin>>a>>b;
        pics[i]={a,b};
    }
    sort(pics.begin(),pics.end());
    for(int i=0;i<m;i++){
        cin>>frames[i];
    }
    sort(frames.begin(),frames.end());
    vector<tuple<int,int,int>> values(n);
    for (int i=0;i<n;i++){
        values[i]={pics[i].second,pics[i].first,i};
    }
    for (int i=0;i<n;i++){
        seg[n+i]=pics[i].second;
    }
    sort(values.begin(),values.end());
    build();
    int res=0;
    //O(n+nlogn+m+mlogm+nlogn)
    for(int i=m-1;i>=0;i--){
        auto it=upper_bound(pics.begin(),pics.end(),make_pair(frames[i],(int)1e9+1));
        if(it==pics.begin()){
            break;
        }
        int r=it-pics.begin();
        // cerr<<r<<"\n";
        int k = query(0,r);
        // cerr<<k<<"\n";
        if(k==-1){
            break;
        }
        res++;
        tuple<int,int,int> cur={k,frames[i],n+1};
        auto it2=upper_bound(values.begin(),values.end(),cur);
        it2--;
        int sec=get<2>(*it2);
        modify(sec,-1);
        values.erase(it2);
    }
    cout<<res<<"\n";

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 51 ms 3408 KB Output is correct
39 Correct 46 ms 6492 KB Output is correct
40 Correct 42 ms 6680 KB Output is correct
41 Correct 52 ms 6228 KB Output is correct
42 Correct 37 ms 6248 KB Output is correct
43 Correct 38 ms 6348 KB Output is correct
44 Correct 44 ms 6480 KB Output is correct
45 Correct 58 ms 6228 KB Output is correct
46 Correct 51 ms 6364 KB Output is correct
47 Correct 611 ms 6128 KB Output is correct
48 Correct 597 ms 6224 KB Output is correct
49 Correct 42 ms 4948 KB Output is correct
50 Correct 41 ms 4948 KB Output is correct
51 Correct 43 ms 6380 KB Output is correct
52 Correct 44 ms 6380 KB Output is correct
53 Correct 49 ms 6252 KB Output is correct
54 Correct 41 ms 6504 KB Output is correct
55 Correct 80 ms 6484 KB Output is correct
56 Correct 30 ms 4956 KB Output is correct
57 Correct 14 ms 1628 KB Output is correct
58 Correct 27 ms 4944 KB Output is correct
59 Correct 31 ms 4944 KB Output is correct
60 Correct 14 ms 1752 KB Output is correct
61 Correct 74 ms 3412 KB Output is correct
62 Correct 643 ms 6480 KB Output is correct
63 Correct 645 ms 6484 KB Output is correct
64 Correct 652 ms 6480 KB Output is correct
65 Correct 654 ms 6480 KB Output is correct
66 Correct 661 ms 6632 KB Output is correct
67 Correct 646 ms 6484 KB Output is correct
68 Correct 648 ms 6476 KB Output is correct
69 Correct 655 ms 6480 KB Output is correct
70 Correct 642 ms 6740 KB Output is correct
71 Correct 652 ms 6484 KB Output is correct
72 Correct 657 ms 6484 KB Output is correct
73 Correct 632 ms 6484 KB Output is correct