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Submission #1088680

# Submission time Handle Problem Language Result Execution time Memory
1088680 2024-09-14T18:44:38 Z alexander707070 New Home (APIO18_new_home) C++14
12 / 100
 5000 ms 103584 KB 
#include<bits/stdc++.h>
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")

#define MAXN 1000007
using namespace std;

const int bucket_sz=1000007,inf=1e9+7;

int n,k,q,x,t,l,r,pt,ans[MAXN];

struct event{
    int x,type,tim,id;

    inline friend bool operator < (event fr,event sc){
        if(fr.tim!=sc.tim)return fr.tim<sc.tim;
        else return fr.type<sc.type;
    }
}s[MAXN];

bool cmp(event fr,event sc){
    return fr.x<sc.x;
}

multiset<int> stores[MAXN];
set< pair<int,int> > ss;
vector< pair<int,int> > st,ts;

vector<event> z,ask;

int sp[MAXN],tim;
vector<int> poss;
priority_queue<int> pq;

int mins(){
    pair<int,int> p=*ss.begin();
    return p.first;
}

int maxs(){
    pair<int,int> p=*ss.rbegin();
    return p.first;
}

int calc(int x,int t){
    if(stores[t].empty())return inf;

    auto it=stores[t].lower_bound(x);

    int p1=-inf,p2=-inf;

    if(it!=stores[t].end())p1=*it;
    if(it!=stores[t].begin()){
        it--; p2=*it;
    }

    return min(abs(x-p1),abs(x-p2));
}

void solve(){

    tim++; ask.clear();
    for(event e:z){
        if(e.type==0 or e.type==2){
            sp[e.id]=tim;
        }else{
            ask.push_back(e);
        }
    }

    poss.clear(); st.clear(); ts.clear();
    for(int i=1;i<=k;i++){
        if(sp[i]==tim)poss.push_back(i);
        else{
            vector<int> w;
            for(int f:stores[i]){
                w.push_back(f);
            }

            if(w.empty()){
                st.push_back({0,inf});
                ts.push_back({inf,2*inf});
                break;
            }

            st.push_back({0,w[0]});
            for(int f=0;f<w.size()-1;f++){
                int pos=(w[f]+w[f+1])/2+(w[f]+w[f+1])%2;
                int val=(w[f+1]-w[f])/2;

                st.push_back({pos,pos+val});
                ts.push_back({pos-(w[f]+w[f+1])%2,val-(pos-(w[f]+w[f+1])%2)});
            }
            ts.push_back({inf,-w.back()});
        }
    }

    if(!st.empty()){
        sort(st.begin(),st.end());
        sort(ts.begin(),ts.end());
        sort(ask.begin(),ask.end(),cmp);

        int pt=0;
        while(!pq.empty())pq.pop();

        for(int i=0;i<ask.size();i++){
            while(pt<st.size() and st[pt].first<=ask[i].x){
                pq.push(st[pt].second);
                pt++;
            }

            ans[ask[i].id]=max(ans[ask[i].id],pq.top()-ask[i].x);
        }

        pt=ts.size()-1;
        while(!pq.empty())pq.pop();

        for(int i=ask.size()-1;i>=0;i--){
            while(pt>=0 and ts[pt].first>=ask[i].x){
                pq.push(ts[pt].second);
                pt--;
            }

            ans[ask[i].id]=max(ans[ask[i].id],pq.top()+ask[i].x);
        }
    }

    for(event e:z){
        if(e.type==0){
            stores[e.id].insert(e.x);
        }else if(e.type==2){
            stores[e.id].erase(stores[e.id].find(e.x));
        }else{
            for(int i:poss){
                ans[e.id]=max(ans[e.id],calc(e.x,i));
            }
        }
    }
}

int main(){

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin>>n>>k>>q;
    for(int i=1;i<=n;i++){
        cin>>x>>t>>l>>r;

        pt++; s[pt]={x,0,l,t};
        pt++; s[pt]={x,2,r,t};
    }

    for(int i=1;i<=q;i++){
        cin>>x>>t;

        pt++; s[pt]={x,1,t,i};
    }

    sort(s+1,s+pt+1);

    for(int i=1;i<=pt;i++){
        z.push_back(s[i]);

        if(z.size()==bucket_sz){
            solve(); z.clear();
        }
    }

    if(!z.empty()){
        solve(); z.clear();
    }

    for(int i=1;i<=q;i++){
        if(ans[i]>200000000)cout<<"-1\n";
        else cout<<ans[i]<<"\n";
    }

    return 0;
}

/*
4 2 4
3 1 1 10
9 2 2 4
7 2 5 7
4 1 8 10
5 3
5 6
5 9
1 10

*/

Compilation message

new_home.cpp: In function 'void solve()':
new_home.cpp:87:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |             for(int f=0;f<w.size()-1;f++){
      |                         ~^~~~~~~~~~~
new_home.cpp:106:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  106 |         for(int i=0;i<ask.size();i++){
      |                     ~^~~~~~~~~~~
new_home.cpp:107:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  107 |             while(pt<st.size() and st[pt].first<=ask[i].x){
      |                   ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 47452 KB Output is correct
2 Correct 17 ms 47452 KB Output is correct
3 Correct 18 ms 47444 KB Output is correct
4 Correct 17 ms 47452 KB Output is correct
5 Correct 17 ms 47420 KB Output is correct
6 Correct 17 ms 47452 KB Output is correct
7 Correct 19 ms 47424 KB Output is correct
8 Correct 24 ms 47452 KB Output is correct
9 Correct 23 ms 47452 KB Output is correct
10 Correct 19 ms 47452 KB Output is correct
11 Correct 17 ms 47500 KB Output is correct
12 Correct 18 ms 47320 KB Output is correct
13 Correct 17 ms 47452 KB Output is correct
14 Correct 17 ms 47452 KB Output is correct
15 Correct 21 ms 47452 KB Output is correct
16 Correct 21 ms 47380 KB Output is correct
17 Correct 18 ms 47452 KB Output is correct
18 Correct 18 ms 47380 KB Output is correct
19 Correct 18 ms 47448 KB Output is correct
20 Correct 23 ms 47448 KB Output is correct
21 Correct 18 ms 47452 KB Output is correct
22 Correct 18 ms 47376 KB Output is correct
23 Correct 17 ms 47452 KB Output is correct
24 Correct 17 ms 47452 KB Output is correct
25 Correct 23 ms 47428 KB Output is correct
26 Correct 18 ms 47448 KB Output is correct
27 Correct 18 ms 47480 KB Output is correct
28 Correct 18 ms 47448 KB Output is correct
29 Correct 17 ms 47452 KB Output is correct
30 Correct 17 ms 47452 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 47452 KB Output is correct
2 Correct 17 ms 47452 KB Output is correct
3 Correct 18 ms 47444 KB Output is correct
4 Correct 17 ms 47452 KB Output is correct
5 Correct 17 ms 47420 KB Output is correct
6 Correct 17 ms 47452 KB Output is correct
7 Correct 19 ms 47424 KB Output is correct
8 Correct 24 ms 47452 KB Output is correct
9 Correct 23 ms 47452 KB Output is correct
10 Correct 19 ms 47452 KB Output is correct
11 Correct 17 ms 47500 KB Output is correct
12 Correct 18 ms 47320 KB Output is correct
13 Correct 17 ms 47452 KB Output is correct
14 Correct 17 ms 47452 KB Output is correct
15 Correct 21 ms 47452 KB Output is correct
16 Correct 21 ms 47380 KB Output is correct
17 Correct 18 ms 47452 KB Output is correct
18 Correct 18 ms 47380 KB Output is correct
19 Correct 18 ms 47448 KB Output is correct
20 Correct 23 ms 47448 KB Output is correct
21 Correct 18 ms 47452 KB Output is correct
22 Correct 18 ms 47376 KB Output is correct
23 Correct 17 ms 47452 KB Output is correct
24 Correct 17 ms 47452 KB Output is correct
25 Correct 23 ms 47428 KB Output is correct
26 Correct 18 ms 47448 KB Output is correct
27 Correct 18 ms 47480 KB Output is correct
28 Correct 18 ms 47448 KB Output is correct
29 Correct 17 ms 47452 KB Output is correct
30 Correct 17 ms 47452 KB Output is correct
31 Correct 1839 ms 57336 KB Output is correct
32 Correct 78 ms 55492 KB Output is correct
33 Correct 149 ms 55484 KB Output is correct
34 Correct 1365 ms 57336 KB Output is correct
35 Correct 807 ms 59324 KB Output is correct
36 Correct 189 ms 59068 KB Output is correct
37 Correct 137 ms 57280 KB Output is correct
38 Correct 92 ms 57284 KB Output is correct
39 Correct 90 ms 57508 KB Output is correct
40 Correct 82 ms 57416 KB Output is correct
41 Correct 231 ms 57672 KB Output is correct
42 Correct 273 ms 57528 KB Output is correct
43 Correct 233 ms 59056 KB Output is correct
44 Correct 187 ms 57536 KB Output is correct
45 Correct 114 ms 57592 KB Output is correct
46 Correct 84 ms 57392 KB Output is correct
47 Correct 71 ms 57136 KB Output is correct
48 Correct 69 ms 57120 KB Output is correct
49 Correct 99 ms 57288 KB Output is correct
50 Correct 172 ms 57380 KB Output is correct
51 Correct 72 ms 57288 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5019 ms 103584 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5090 ms 102808 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 47452 KB Output is correct
2 Correct 17 ms 47452 KB Output is correct
3 Correct 18 ms 47444 KB Output is correct
4 Correct 17 ms 47452 KB Output is correct
5 Correct 17 ms 47420 KB Output is correct
6 Correct 17 ms 47452 KB Output is correct
7 Correct 19 ms 47424 KB Output is correct
8 Correct 24 ms 47452 KB Output is correct
9 Correct 23 ms 47452 KB Output is correct
10 Correct 19 ms 47452 KB Output is correct
11 Correct 17 ms 47500 KB Output is correct
12 Correct 18 ms 47320 KB Output is correct
13 Correct 17 ms 47452 KB Output is correct
14 Correct 17 ms 47452 KB Output is correct
15 Correct 21 ms 47452 KB Output is correct
16 Correct 21 ms 47380 KB Output is correct
17 Correct 18 ms 47452 KB Output is correct
18 Correct 18 ms 47380 KB Output is correct
19 Correct 18 ms 47448 KB Output is correct
20 Correct 23 ms 47448 KB Output is correct
21 Correct 18 ms 47452 KB Output is correct
22 Correct 18 ms 47376 KB Output is correct
23 Correct 17 ms 47452 KB Output is correct
24 Correct 17 ms 47452 KB Output is correct
25 Correct 23 ms 47428 KB Output is correct
26 Correct 18 ms 47448 KB Output is correct
27 Correct 18 ms 47480 KB Output is correct
28 Correct 18 ms 47448 KB Output is correct
29 Correct 17 ms 47452 KB Output is correct
30 Correct 17 ms 47452 KB Output is correct
31 Correct 1839 ms 57336 KB Output is correct
32 Correct 78 ms 55492 KB Output is correct
33 Correct 149 ms 55484 KB Output is correct
34 Correct 1365 ms 57336 KB Output is correct
35 Correct 807 ms 59324 KB Output is correct
36 Correct 189 ms 59068 KB Output is correct
37 Correct 137 ms 57280 KB Output is correct
38 Correct 92 ms 57284 KB Output is correct
39 Correct 90 ms 57508 KB Output is correct
40 Correct 82 ms 57416 KB Output is correct
41 Correct 231 ms 57672 KB Output is correct
42 Correct 273 ms 57528 KB Output is correct
43 Correct 233 ms 59056 KB Output is correct
44 Correct 187 ms 57536 KB Output is correct
45 Correct 114 ms 57592 KB Output is correct
46 Correct 84 ms 57392 KB Output is correct
47 Correct 71 ms 57136 KB Output is correct
48 Correct 69 ms 57120 KB Output is correct
49 Correct 99 ms 57288 KB Output is correct
50 Correct 172 ms 57380 KB Output is correct
51 Correct 72 ms 57288 KB Output is correct
52 Execution timed out 5019 ms 58040 KB Time limit exceeded
53 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 47452 KB Output is correct
2 Correct 17 ms 47452 KB Output is correct
3 Correct 18 ms 47444 KB Output is correct
4 Correct 17 ms 47452 KB Output is correct
5 Correct 17 ms 47420 KB Output is correct
6 Correct 17 ms 47452 KB Output is correct
7 Correct 19 ms 47424 KB Output is correct
8 Correct 24 ms 47452 KB Output is correct
9 Correct 23 ms 47452 KB Output is correct
10 Correct 19 ms 47452 KB Output is correct
11 Correct 17 ms 47500 KB Output is correct
12 Correct 18 ms 47320 KB Output is correct
13 Correct 17 ms 47452 KB Output is correct
14 Correct 17 ms 47452 KB Output is correct
15 Correct 21 ms 47452 KB Output is correct
16 Correct 21 ms 47380 KB Output is correct
17 Correct 18 ms 47452 KB Output is correct
18 Correct 18 ms 47380 KB Output is correct
19 Correct 18 ms 47448 KB Output is correct
20 Correct 23 ms 47448 KB Output is correct
21 Correct 18 ms 47452 KB Output is correct
22 Correct 18 ms 47376 KB Output is correct
23 Correct 17 ms 47452 KB Output is correct
24 Correct 17 ms 47452 KB Output is correct
25 Correct 23 ms 47428 KB Output is correct
26 Correct 18 ms 47448 KB Output is correct
27 Correct 18 ms 47480 KB Output is correct
28 Correct 18 ms 47448 KB Output is correct
29 Correct 17 ms 47452 KB Output is correct
30 Correct 17 ms 47452 KB Output is correct
31 Correct 1839 ms 57336 KB Output is correct
32 Correct 78 ms 55492 KB Output is correct
33 Correct 149 ms 55484 KB Output is correct
34 Correct 1365 ms 57336 KB Output is correct
35 Correct 807 ms 59324 KB Output is correct
36 Correct 189 ms 59068 KB Output is correct
37 Correct 137 ms 57280 KB Output is correct
38 Correct 92 ms 57284 KB Output is correct
39 Correct 90 ms 57508 KB Output is correct
40 Correct 82 ms 57416 KB Output is correct
41 Correct 231 ms 57672 KB Output is correct
42 Correct 273 ms 57528 KB Output is correct
43 Correct 233 ms 59056 KB Output is correct
44 Correct 187 ms 57536 KB Output is correct
45 Correct 114 ms 57592 KB Output is correct
46 Correct 84 ms 57392 KB Output is correct
47 Correct 71 ms 57136 KB Output is correct
48 Correct 69 ms 57120 KB Output is correct
49 Correct 99 ms 57288 KB Output is correct
50 Correct 172 ms 57380 KB Output is correct
51 Correct 72 ms 57288 KB Output is correct
52 Execution timed out 5019 ms 103584 KB Time limit exceeded
53 Halted 0 ms 0 KB -