oj.uz

Submission #896685

# Submission time Handle Problem Language Result Execution time Memory
896685 2024-01-01T21:17:11 Z MateiKing80 Passport (JOI23_passport) C++14
54 / 100
 2000 ms 832844 KB 
#include <bits/stdc++.h>

using namespace std;

#define all(a) (a).begin(), (a).end()
#define pii pair<int, int>
#define fr first
#define sc second
#define pb push_back

int l[200005], r[200005], x[200005];
int nrpas1[200005], nrpasn[200005], ans[200005];
vector<int> vec[200005];
int n, Q;
int dist[2505][2505];

void bfs1()
{
    queue<int> q;
    q.push(1);
    while(!q.empty())
    {
        int nod = q.front();
        q.pop();
        for(auto i : vec[nod])
        {
            if(i != 1 && nrpas1[i] == 0)
            {
                nrpas1[i] = nrpas1[nod] + 1;
                q.push(i);
            }
        }
    }
    for(int i = 2; i <= n; i ++)
        if(nrpas1[i] == 0)
            nrpas1[i] = -1;
}


void bfsn()
{
    queue<int> q;
    q.push(n);
    while(!q.empty())
    {
        int nod = q.front();
        q.pop();
        for(auto i : vec[nod])
        {
            if(i != n && nrpasn[i] == 0)
            {
                nrpasn[i] = nrpasn[nod] + 1;
                q.push(i);
            }
        }
    }
    for(int i = 1; i < n; i ++)
        if(nrpasn[i] == 0)
            nrpasn[i] = -1;
}

void calcdist(int nod)
{
    int st = l[nod], dr = r[nod], stp = nod, drp = nod, sus = 0;
    ans[nod] = nrpas1[nod] + nrpasn[nod];

    if(nrpas1[nod] == -1 || nrpasn[nod] == -1)
    {
        ans[nod] = -1;
        return;
    }
//    cout << '\n';
    while(st != stp || dr != drp)
    {
        sus ++;
//        cout << st << " " << dr << " " << stp << " " << drp << " " << sus << '\n';
        int sta = stp, dra = drp;
        stp = st, drp = dr;
        for(int i = sta - 1; i >= stp; i --)
            st = min(st, l[i]), dr = max(dr, r[i]), dist[nod][i] = sus;
        for(int i = dra + 1; i <= drp; i ++)
            dr = max(dr, r[i]), st = min(st, l[i]), dist[nod][i] = sus;
    }
    for(int i = 1; i < st; i ++)
        dist[nod][i] = 1e9;
    for(int i = dr + 1; i <= n; i ++)
        dist[nod][i] = 1e9;
    for(int i = 1; i <= n; i ++)
        if(nrpas1[i] != -1 &&  nrpasn[i] != -1)
        {
            int sus = nrpas1[i] + nrpasn[i] + dist[nod][i];
            if(nrpas1[i] != 0 && nrpasn[i] != 0)
                sus --;
            ans[nod] = min(ans[nod], sus);
        }
}

void sol_penala()
{
    int dr = 1, ans = 0, rmax = r[1];
    while(dr != n && dr != rmax)
    {
        int pdr = dr;
        dr = rmax;
        ans ++;
        for(int i = pdr + 1; i <= dr; i ++)
            rmax = max(rmax, r[i]);
    }
    if(dr == n)
        cout << ans;
    else
        cout << -1;
}


int main()
{
    cin >> n;
    for(int i = 1; i <= n; i ++)
        cin >> l[i] >> r[i];
    cin >> Q;
    for(int i = 1; i <= Q; i ++)
        cin >> x[i];
    if(Q == 1 && x[1] == 1)
    {
        sol_penala();
        return 0;
    }
    for(int i = 1; i <= n; i ++)
        for(int j = l[i]; j <= r[i]; j ++)
            vec[j].pb(i);
    bfs1();
    bfsn();
    for(int i = 1; i <= Q; i ++)
        calcdist(x[i]), cout << ans[x[i]] << '\n';
//    for(int i = 1; i <= n; i ++)
//        cout << i << " " << nrpas1[i] << " " << nrpasn[i] << '\n';
//    for(int i = 1; i <= n; i ++)
//    {
//        for(int j = 1; j <= n; j ++)
//            cout << dist[i][j] << " ";
//        cout << '\n';
//    }
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10588 KB Output is correct
2 Correct 2 ms 10588 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 93 ms 14048 KB Output is correct
5 Correct 94 ms 14040 KB Output is correct
6 Correct 95 ms 14032 KB Output is correct
7 Correct 73 ms 13192 KB Output is correct
8 Correct 65 ms 12884 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10584 KB Output is correct
2 Correct 2 ms 10584 KB Output is correct
3 Correct 2 ms 10680 KB Output is correct
4 Correct 2 ms 10588 KB Output is correct
5 Correct 2 ms 10588 KB Output is correct
6 Correct 2 ms 10588 KB Output is correct
7 Correct 2 ms 10588 KB Output is correct
8 Correct 2 ms 10588 KB Output is correct
9 Correct 2 ms 10684 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12632 KB Output is correct
13 Correct 2 ms 12892 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12636 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10584 KB Output is correct
2 Correct 2 ms 10584 KB Output is correct
3 Correct 2 ms 10680 KB Output is correct
4 Correct 2 ms 10588 KB Output is correct
5 Correct 2 ms 10588 KB Output is correct
6 Correct 2 ms 10588 KB Output is correct
7 Correct 2 ms 10588 KB Output is correct
8 Correct 2 ms 10588 KB Output is correct
9 Correct 2 ms 10684 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12632 KB Output is correct
13 Correct 2 ms 12892 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12636 KB Output is correct
16 Correct 12 ms 20828 KB Output is correct
17 Correct 4 ms 12892 KB Output is correct
18 Correct 27 ms 29820 KB Output is correct
19 Correct 25 ms 28768 KB Output is correct
20 Correct 3 ms 12640 KB Output is correct
21 Correct 6 ms 15196 KB Output is correct
22 Correct 23 ms 30816 KB Output is correct
23 Correct 22 ms 26976 KB Output is correct
24 Correct 22 ms 27480 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10584 KB Output is correct
2 Correct 2 ms 10584 KB Output is correct
3 Correct 2 ms 10680 KB Output is correct
4 Correct 2 ms 10588 KB Output is correct
5 Correct 2 ms 10588 KB Output is correct
6 Correct 2 ms 10588 KB Output is correct
7 Correct 2 ms 10588 KB Output is correct
8 Correct 2 ms 10588 KB Output is correct
9 Correct 2 ms 10684 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12632 KB Output is correct
13 Correct 2 ms 12892 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12636 KB Output is correct
16 Correct 12 ms 20828 KB Output is correct
17 Correct 4 ms 12892 KB Output is correct
18 Correct 27 ms 29820 KB Output is correct
19 Correct 25 ms 28768 KB Output is correct
20 Correct 3 ms 12640 KB Output is correct
21 Correct 6 ms 15196 KB Output is correct
22 Correct 23 ms 30816 KB Output is correct
23 Correct 22 ms 26976 KB Output is correct
24 Correct 22 ms 27480 KB Output is correct
25 Correct 2 ms 10592 KB Output is correct
26 Correct 2 ms 10588 KB Output is correct
27 Correct 29 ms 42268 KB Output is correct
28 Correct 22 ms 33624 KB Output is correct
29 Correct 27 ms 33628 KB Output is correct
30 Correct 16 ms 27228 KB Output is correct
31 Correct 29 ms 43260 KB Output is correct

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10588 KB Output is correct
2 Correct 2 ms 10588 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 93 ms 14048 KB Output is correct
5 Correct 94 ms 14040 KB Output is correct
6 Correct 95 ms 14032 KB Output is correct
7 Correct 73 ms 13192 KB Output is correct
8 Correct 65 ms 12884 KB Output is correct
9 Correct 2 ms 10584 KB Output is correct
10 Correct 2 ms 10584 KB Output is correct
11 Correct 2 ms 10680 KB Output is correct
12 Correct 2 ms 10588 KB Output is correct
13 Correct 2 ms 10588 KB Output is correct
14 Correct 2 ms 10588 KB Output is correct
15 Correct 2 ms 10588 KB Output is correct
16 Correct 2 ms 10588 KB Output is correct
17 Correct 2 ms 10684 KB Output is correct
18 Correct 2 ms 10588 KB Output is correct
19 Correct 2 ms 12892 KB Output is correct
20 Correct 2 ms 12632 KB Output is correct
21 Correct 2 ms 12892 KB Output is correct
22 Correct 2 ms 12892 KB Output is correct
23 Correct 2 ms 12636 KB Output is correct
24 Correct 12 ms 20828 KB Output is correct
25 Correct 4 ms 12892 KB Output is correct
26 Correct 27 ms 29820 KB Output is correct
27 Correct 25 ms 28768 KB Output is correct
28 Correct 3 ms 12640 KB Output is correct
29 Correct 6 ms 15196 KB Output is correct
30 Correct 23 ms 30816 KB Output is correct
31 Correct 22 ms 26976 KB Output is correct
32 Correct 22 ms 27480 KB Output is correct
33 Correct 2 ms 10592 KB Output is correct
34 Correct 2 ms 10588 KB Output is correct
35 Correct 29 ms 42268 KB Output is correct
36 Correct 22 ms 33624 KB Output is correct
37 Correct 27 ms 33628 KB Output is correct
38 Correct 16 ms 27228 KB Output is correct
39 Correct 29 ms 43260 KB Output is correct
40 Execution timed out 2130 ms 832844 KB Time limit exceeded
41 Halted 0 ms 0 KB -