oj.uz

Submission #831365

# Submission time Handle Problem Language Result Execution time Memory
831365 2023-08-20T07:09:50 Z alvingogo Passport (JOI23_passport) C++14
100 / 100
 684 ms 100296 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#define AquA cin.tie(0);ios_base::sync_with_stdio(0);
#define fs first
#define sc second
#define p_q priority_queue
#define int long long
using namespace std;

inline void chmin(int& a,int b){
    a=min(a,b);
}
typedef pair<int,int> pii;
struct TC{
    int c,p,a,b;
};
struct ST{
    struct no{
        vector<int> s;
        int vis=0;
    };
    vector<no> st;
    void init(int x){
        st.resize(4*x);
    }
    void update(int v,int L,int R,int l,int r,int a){
        if(L==l && r==R){
            st[v].s.push_back(a);
            return;
        }
        int m=(L+R)/2;
        if(r<=m){
            update(2*v+1,L,m,l,r,a);
        }
        else if(l>m){
            update(2*v+2,m+1,R,l,r,a);
        }
        else{
            update(2*v+1,L,m,l,m,a);
            update(2*v+2,m+1,R,m+1,r,a);
        }
    }
    void find(int v,int L,int R,int t,int g,vector<int>& a){
        if(st[v].vis!=g){
            st[v].vis=g;
            a.insert(a.end(),st[v].s.begin(),st[v].s.end());
        }
        if(L==R){
            return;
        }
        int m=(L+R)/2;
        if(t<=m){
            find(2*v+1,L,m,t,g,a);
        }
        else{
            find(2*v+2,m+1,R,t,g,a);
        }
    }
}st;
const int inf=1e18;
signed main(){
    AquA;
    int n,k;
    cin >> n;
    k=n;
    vector<TC> v(k);
    for(int i=0;i<k;i++){
        v[i].c=i;
        v[i].p=1;
        cin >> v[i].a >> v[i].b;
        v[i].a--;
        v[i].b--;
    }
    st.init(n);
    for(int i=0;i<k;i++){
        st.update(0,0,n-1,v[i].a,v[i].b,i+n);
    }
    auto dijk=[&](vector<int>& dis,int g){
        p_q<pii,vector<pii>,greater<pii> > pq;
        for(int i=0;i<n+k;i++){
            pq.push({dis[i],i});
        }
        while(pq.size()){
            auto h=pq.top();
            pq.pop();
            if(dis[h.sc]!=h.fs){
                continue;
            }
            if(h.sc>=n){
                int r=h.sc-n;
                if(dis[v[r].c]>h.fs+v[r].p){
                    dis[v[r].c]=h.fs+v[r].p;
                    pq.push({dis[v[r].c],v[r].c});
                }
            }
            else{
                vector<int> e;
                st.find(0,0,n-1,h.sc,g,e);
                for(auto y:e){
                    if(dis[y]>h.fs){
                        dis[y]=h.fs;
                        pq.push({dis[y],y});
                    }
                }
            }
        }
    };
    vector<int> a(n+k,inf),b(n+k,inf),ans(n+k);
    a[0]=0;
    dijk(a,1);
    b[n-1]=0;
    dijk(b,2);
    for(int i=0;i<n+k;i++){
        ans[i]=a[i]+b[i];
    }
    for(int i=n;i<n+k;i++){
        chmin(ans[v[i-n].c],ans[i]+v[i-n].p);
    }
    dijk(ans,3);
    int q;
    cin >> q;
    while(q--){
        int a;
        cin >> a;
        a--;
        if(ans[a]>=inf){
            cout << -1 << "\n";
        }
        else{
            cout << ans[a] << "\n";
        }
    }
    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 635 ms 91316 KB Output is correct
5 Correct 391 ms 70780 KB Output is correct
6 Correct 293 ms 68416 KB Output is correct
7 Correct 271 ms 68772 KB Output is correct
8 Correct 210 ms 59684 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 6 ms 1300 KB Output is correct
17 Correct 4 ms 1204 KB Output is correct
18 Correct 5 ms 1420 KB Output is correct
19 Correct 5 ms 1412 KB Output is correct
20 Correct 3 ms 1156 KB Output is correct
21 Correct 4 ms 1236 KB Output is correct
22 Correct 3 ms 1108 KB Output is correct
23 Correct 4 ms 1264 KB Output is correct
24 Correct 4 ms 1348 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 6 ms 1300 KB Output is correct
17 Correct 4 ms 1204 KB Output is correct
18 Correct 5 ms 1420 KB Output is correct
19 Correct 5 ms 1412 KB Output is correct
20 Correct 3 ms 1156 KB Output is correct
21 Correct 4 ms 1236 KB Output is correct
22 Correct 3 ms 1108 KB Output is correct
23 Correct 4 ms 1264 KB Output is correct
24 Correct 4 ms 1348 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 320 KB Output is correct
27 Correct 5 ms 1276 KB Output is correct
28 Correct 5 ms 1236 KB Output is correct
29 Correct 4 ms 1204 KB Output is correct
30 Correct 5 ms 1272 KB Output is correct
31 Correct 6 ms 1236 KB Output is correct

Subtask #5
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 635 ms 91316 KB Output is correct
5 Correct 391 ms 70780 KB Output is correct
6 Correct 293 ms 68416 KB Output is correct
7 Correct 271 ms 68772 KB Output is correct
8 Correct 210 ms 59684 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 320 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 6 ms 1300 KB Output is correct
25 Correct 4 ms 1204 KB Output is correct
26 Correct 5 ms 1420 KB Output is correct
27 Correct 5 ms 1412 KB Output is correct
28 Correct 3 ms 1156 KB Output is correct
29 Correct 4 ms 1236 KB Output is correct
30 Correct 3 ms 1108 KB Output is correct
31 Correct 4 ms 1264 KB Output is correct
32 Correct 4 ms 1348 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 1 ms 320 KB Output is correct
35 Correct 5 ms 1276 KB Output is correct
36 Correct 5 ms 1236 KB Output is correct
37 Correct 4 ms 1204 KB Output is correct
38 Correct 5 ms 1272 KB Output is correct
39 Correct 6 ms 1236 KB Output is correct
40 Correct 684 ms 100296 KB Output is correct
41 Correct 471 ms 71468 KB Output is correct
42 Correct 500 ms 93844 KB Output is correct
43 Correct 517 ms 95168 KB Output is correct
44 Correct 332 ms 68612 KB Output is correct
45 Correct 396 ms 73244 KB Output is correct
46 Correct 151 ms 28216 KB Output is correct
47 Correct 417 ms 75868 KB Output is correct
48 Correct 413 ms 80280 KB Output is correct