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Submission #238395

# Submission time Handle Problem Language Result Execution time Memory
238395 2020-06-11T04:10:00 Z haengsyo Exhibition (JOI19_ho_t2) C++14
50 / 100
 1000 ms 8624 KB 
#pragma GCC optimize("O3")

#include "bits/stdc++.h"
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
tree<int,int,greater<int>,rb_tree_tag,tree_order_statistics_node_update> map_t;
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define F0R(i, a) for(int i = 0; i < (a); ++i)
#define sz(x) (int)x.size()
#define SORT(x) sort(x.begin(),x.end())
#define ERASE(x) x.erase(unique(x.begin(),x.end()),x.end())
#define POSL(x,v) (lower_bound(x.begin(),x.end(),v)-x.begin())
#define POSU(x,v) (upper_bound(x.begin(),x.end(),v)-x.begin())
#define REV(x) reverse(x.begin(),x.end())
int dx[]={-1,0,1,0};
int dy[]={0,-1,0,1};
int n,m;
const int mxN=1e5+5;
const int INF=2e9;
pair<int,int> arr[mxN];
int sizes[mxN];

int t[4*mxN],p[4*mxN];

void recalc(int v) {
    if(t[2*v]<t[2*v+1]) {
        t[v]=t[2*v];
        p[v]=p[2*v];
    }
    else {
        t[v]=t[2*v+1];
        p[v]=p[2*v+1];
    }
}

void build(int v,int tl,int tr) {
    if(tl==tr) {
        t[v]=arr[tl].second;
        p[v]=tl;
        return;
    }
    int mid=tl+(tr-tl)/2;
    build(2*v,tl,mid);
    build(2*v+1,mid+1,tr);
    recalc(v);
}

pair<int,int> qry(int v,int tl,int tr,int l,int r) {
    if(tr<l || tl>r)
        return {-1,INF};
    if(tl>=l && tr<=r)
        return {p[v],t[v]};
    int mid=tl+(tr-tl)/2;
    pair<int,int> left=qry(2*v,tl,mid,l,r);
    pair<int,int> right=qry(2*v+1,mid+1,tr,l,r);
    if(left.second<right.second)
        return left;
    return right;
}

void upd(int v,int tl,int tr,int pos,int val) {
    if(tr<pos || tl>pos)
        return;
    if(tl==tr) {
        t[v]=val;
        p[v]=pos;
        return;
    }
    int mid=tl+(tr-tl)/2;
    upd(2*v,tl,mid,pos,val);
    upd(2*v+1,mid+1,tr,pos,val);
    recalc(v);
}

int binSearch2(int val) {
    int l,h;
    l=0; h=n-1;
    int res=-1;
    while(l<=h) {
        int mid=l+(h-l)/2;
        if(arr[mid].first<=val) {
            res=mid;
            l=mid+1;
        }
        else
            h=mid-1;
    }
    return res;
}

bool check(int val) {
    vector<pair<int,int>> rem;
    int prev=-1;
    bool res=true;
    FOR(i,m-val,m) {
        int pos=binSearch2(sizes[i]);
        if(pos==-1) {
            res=false;
            goto end;
        }
        pair<int,int> mn={-1,-1};
        while(true) {
            mn=qry(1,0,n-1,0,pos);
            if(mn.second==INF) {
                res=false;
                goto end;
            }
            rem.push_back(mn);
            upd(1,0,n-1,mn.first,INF);
            if(mn.second>=prev)
                break;
        }
        prev=mn.second;
    }
    end:;
    for(auto p : rem)
        upd(1,0,n-1,p.first,p.second);
    return res;
}

int binSearch() {
    int l,h;
    l=0; h=min(m,n);
    int res=0;
    while(l<=h) {
        int mid=l+(h-l)/2;
        if(check(mid)) {
            res=mid;
            l=mid+1;
        }
        else
            h=mid-1;
    }
    return res;
}

int main() {
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    
    cin >> n >> m;
    F0R(i,n)
        cin >> arr[i].first >> arr[i].second;
    F0R(i,m)
        cin >> sizes[i];
    sort(arr,arr+n);
    sort(sizes,sizes+m);
    build(1,0,n-1);
    cout << binSearch();

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 8 ms 384 KB Output is correct
21 Correct 7 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 8 ms 512 KB Output is correct
25 Correct 8 ms 512 KB Output is correct
26 Correct 9 ms 512 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 7 ms 384 KB Output is correct
30 Correct 7 ms 384 KB Output is correct
31 Correct 8 ms 512 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 7 ms 512 KB Output is correct
35 Correct 5 ms 432 KB Output is correct
36 Correct 8 ms 512 KB Output is correct
37 Correct 8 ms 384 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 8 ms 384 KB Output is correct
21 Correct 7 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 8 ms 512 KB Output is correct
25 Correct 8 ms 512 KB Output is correct
26 Correct 9 ms 512 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 7 ms 384 KB Output is correct
30 Correct 7 ms 384 KB Output is correct
31 Correct 8 ms 512 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 7 ms 512 KB Output is correct
35 Correct 5 ms 432 KB Output is correct
36 Correct 8 ms 512 KB Output is correct
37 Correct 8 ms 384 KB Output is correct
38 Correct 733 ms 8360 KB Output is correct
39 Correct 698 ms 8604 KB Output is correct
40 Correct 662 ms 8624 KB Output is correct
41 Correct 749 ms 8472 KB Output is correct
42 Correct 65 ms 6264 KB Output is correct
43 Correct 65 ms 6520 KB Output is correct
44 Correct 673 ms 8576 KB Output is correct
45 Execution timed out 1082 ms 8496 KB Time limit exceeded
46 Halted 0 ms 0 KB -