oj.uz

답안 #1018202

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1018202 2024-07-09T16:16:39 Z alexdd Passport (JOI23_passport) C++17
54 / 100
 2000 ms 129360 KB 
#include<bits/stdc++.h>
using namespace std;
const int INF = 1e9;
int n,cntn;
vector<pair<int,int>> con[530005];
vector<pair<int,int>> conrev[530005];
int id[200005];
void build(int nod, int st, int dr)
{
    cntn = max(cntn, nod);
    if(st==dr)
    {
        id[st]=nod;
        return;
    }
    con[nod].push_back({nod*2,0});
    con[nod].push_back({nod*2+1,0});
    conrev[nod*2].push_back({nod,0});
    conrev[nod*2+1].push_back({nod,0});
    int mij=(st+dr)/2;
    build(nod*2,st,mij);
    build(nod*2+1,mij+1,dr);
}
void baga(int nod, int st, int dr, int le, int ri, int from)
{
    if(le>ri)
        return;
    if(le==st && dr==ri)
    {
        con[from].push_back({nod,1});
        conrev[nod].push_back({from,1});
        return;
    }
    int mij=(st+dr)/2;
    baga(nod*2,st,mij,le,min(mij,ri),from);
    baga(nod*2+1,mij+1,dr,max(mij+1,le),ri,from);
}
void bfs(int src, int dist[])
{
    for(int i=1;i<=cntn;i++)
        dist[i]=INF;
    deque<int> dq;
    dist[src]=0;
    dq.push_back(src);
    while(!dq.empty())
    {
        int nod = dq.front();
        dq.pop_front();
        for(auto [adj,c]:conrev[nod])
        {
            if(dist[adj] > dist[nod]+c)
            {
                dist[adj] = dist[nod]+c;
                if(c==1) dq.push_back(adj);
                else dq.push_front(adj);
            }
        }
    }
}
int dist1[530000],distn[530000],rez[530000];
void dijkstra()
{
    for(int i=1;i<=cntn;i++)
        rez[i]=INF;
    deque<pair<int,int>> dq;
    for(int i=1;i<=n;i++)
    {
        if(i==1) rez[id[i]] = distn[id[i]];
        else if(i==n) rez[id[i]] = dist1[id[i]];
        else if(dist1[id[i]]==1 && distn[id[i]]==1) rez[id[i]] = 1;
        else if(dist1[id[i]]==1) rez[id[i]] = distn[id[i]];
        else if(distn[id[i]]==1) rez[id[i]] = dist1[id[i]];
        else rez[id[i]] = dist1[id[i]] + distn[id[i]] - 1;
        dq.push_back({rez[id[i]],id[i]});
    }
    sort(dq.begin(),dq.end());
    while(!dq.empty())
    {
        int nod = dq.front().second;
        int cdist = dq.front().first;
        dq.pop_front();
        if(rez[nod]!=cdist)
            continue;
        for(auto [adj,c]:conrev[nod])
        {
            if(rez[adj]>rez[nod]+c)
            {
                rez[adj] = rez[nod]+c;
                if(c==0) dq.push_front({rez[adj],adj});
                else dq.push_back({rez[adj],adj});
            }
        }
    }
}
signed main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>n;
    build(1,1,n);
    int le,ri;
    for(int i=1;i<=n;i++)
    {
        cin>>le>>ri;
        baga(1,1,n,le,ri,id[i]);
    }
    bfs(id[1],dist1);
    bfs(id[n],distn);
    dijkstra();
    int q,a;
    cin>>q;
    while(q--)
    {
        cin>>a;
        if(rez[id[a]]<=n+5) cout<<rez[id[a]]<<"\n";
        else cout<<-1<<"\n";
    }
    return 0;
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 32092 KB Output is correct
2 Correct 5 ms 32188 KB Output is correct
3 Correct 4 ms 31984 KB Output is correct
4 Correct 466 ms 115192 KB Output is correct
5 Correct 249 ms 73812 KB Output is correct
6 Correct 127 ms 61068 KB Output is correct
7 Correct 92 ms 59848 KB Output is correct
8 Correct 104 ms 72880 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 32092 KB Output is correct
2 Correct 5 ms 32092 KB Output is correct
3 Correct 5 ms 32092 KB Output is correct
4 Correct 5 ms 32088 KB Output is correct
5 Correct 4 ms 32184 KB Output is correct
6 Correct 6 ms 32088 KB Output is correct
7 Correct 5 ms 32092 KB Output is correct
8 Correct 4 ms 32092 KB Output is correct
9 Correct 5 ms 32092 KB Output is correct
10 Correct 5 ms 32092 KB Output is correct
11 Correct 4 ms 32092 KB Output is correct
12 Correct 5 ms 32092 KB Output is correct
13 Correct 5 ms 32092 KB Output is correct
14 Correct 6 ms 32092 KB Output is correct
15 Correct 5 ms 32092 KB Output is correct

Subtask #3
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 32092 KB Output is correct
2 Correct 5 ms 32092 KB Output is correct
3 Correct 5 ms 32092 KB Output is correct
4 Correct 5 ms 32088 KB Output is correct
5 Correct 4 ms 32184 KB Output is correct
6 Correct 6 ms 32088 KB Output is correct
7 Correct 5 ms 32092 KB Output is correct
8 Correct 4 ms 32092 KB Output is correct
9 Correct 5 ms 32092 KB Output is correct
10 Correct 5 ms 32092 KB Output is correct
11 Correct 4 ms 32092 KB Output is correct
12 Correct 5 ms 32092 KB Output is correct
13 Correct 5 ms 32092 KB Output is correct
14 Correct 6 ms 32092 KB Output is correct
15 Correct 5 ms 32092 KB Output is correct
16 Correct 7 ms 32860 KB Output is correct
17 Correct 7 ms 32708 KB Output is correct
18 Correct 9 ms 32900 KB Output is correct
19 Correct 7 ms 33112 KB Output is correct
20 Correct 6 ms 32344 KB Output is correct
21 Correct 14 ms 32604 KB Output is correct
22 Correct 6 ms 32348 KB Output is correct
23 Correct 7 ms 32652 KB Output is correct
24 Correct 7 ms 32860 KB Output is correct

Subtask #4
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 32092 KB Output is correct
2 Correct 5 ms 32092 KB Output is correct
3 Correct 5 ms 32092 KB Output is correct
4 Correct 5 ms 32088 KB Output is correct
5 Correct 4 ms 32184 KB Output is correct
6 Correct 6 ms 32088 KB Output is correct
7 Correct 5 ms 32092 KB Output is correct
8 Correct 4 ms 32092 KB Output is correct
9 Correct 5 ms 32092 KB Output is correct
10 Correct 5 ms 32092 KB Output is correct
11 Correct 4 ms 32092 KB Output is correct
12 Correct 5 ms 32092 KB Output is correct
13 Correct 5 ms 32092 KB Output is correct
14 Correct 6 ms 32092 KB Output is correct
15 Correct 5 ms 32092 KB Output is correct
16 Correct 7 ms 32860 KB Output is correct
17 Correct 7 ms 32708 KB Output is correct
18 Correct 9 ms 32900 KB Output is correct
19 Correct 7 ms 33112 KB Output is correct
20 Correct 6 ms 32344 KB Output is correct
21 Correct 14 ms 32604 KB Output is correct
22 Correct 6 ms 32348 KB Output is correct
23 Correct 7 ms 32652 KB Output is correct
24 Correct 7 ms 32860 KB Output is correct
25 Correct 6 ms 32092 KB Output is correct
26 Correct 6 ms 32092 KB Output is correct
27 Correct 8 ms 32860 KB Output is correct
28 Correct 7 ms 32524 KB Output is correct
29 Correct 7 ms 32348 KB Output is correct
30 Correct 14 ms 32604 KB Output is correct
31 Correct 7 ms 32600 KB Output is correct

Subtask #5
0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 32092 KB Output is correct
2 Correct 5 ms 32188 KB Output is correct
3 Correct 4 ms 31984 KB Output is correct
4 Correct 466 ms 115192 KB Output is correct
5 Correct 249 ms 73812 KB Output is correct
6 Correct 127 ms 61068 KB Output is correct
7 Correct 92 ms 59848 KB Output is correct
8 Correct 104 ms 72880 KB Output is correct
9 Correct 5 ms 32092 KB Output is correct
10 Correct 5 ms 32092 KB Output is correct
11 Correct 5 ms 32092 KB Output is correct
12 Correct 5 ms 32088 KB Output is correct
13 Correct 4 ms 32184 KB Output is correct
14 Correct 6 ms 32088 KB Output is correct
15 Correct 5 ms 32092 KB Output is correct
16 Correct 4 ms 32092 KB Output is correct
17 Correct 5 ms 32092 KB Output is correct
18 Correct 5 ms 32092 KB Output is correct
19 Correct 4 ms 32092 KB Output is correct
20 Correct 5 ms 32092 KB Output is correct
21 Correct 5 ms 32092 KB Output is correct
22 Correct 6 ms 32092 KB Output is correct
23 Correct 5 ms 32092 KB Output is correct
24 Correct 7 ms 32860 KB Output is correct
25 Correct 7 ms 32708 KB Output is correct
26 Correct 9 ms 32900 KB Output is correct
27 Correct 7 ms 33112 KB Output is correct
28 Correct 6 ms 32344 KB Output is correct
29 Correct 14 ms 32604 KB Output is correct
30 Correct 6 ms 32348 KB Output is correct
31 Correct 7 ms 32652 KB Output is correct
32 Correct 7 ms 32860 KB Output is correct
33 Correct 6 ms 32092 KB Output is correct
34 Correct 6 ms 32092 KB Output is correct
35 Correct 8 ms 32860 KB Output is correct
36 Correct 7 ms 32524 KB Output is correct
37 Correct 7 ms 32348 KB Output is correct
38 Correct 14 ms 32604 KB Output is correct
39 Correct 7 ms 32600 KB Output is correct
40 Correct 538 ms 116188 KB Output is correct
41 Correct 259 ms 75272 KB Output is correct
42 Execution timed out 2056 ms 129360 KB Time limit exceeded
43 Halted 0 ms 0 KB -