oj.uz

Submission #489922

# Submission time Handle Problem Language Result Execution time Memory
489922 2021-11-25T05:18:04 Z blue Treatment Project (JOI20_treatment) C++17
35 / 100
 794 ms 524288 KB 
#include <iostream>
#include <algorithm>
#include <vector>
#include <deque>
#include <set>
using namespace std;

using ll = long long;
using pll = pair<ll, ll>;
using vpll = vector<pll>;
using vi = vector<int>;
using vll = vector<ll>;
using pii = pair<int, int>;

struct project
{
    int T;
    int L;
    int R;
    int C;
    int I;
};



vector<project> P;

const int maxM = 100'000;
vi query_ans;

vi visited(maxM, 0);

const ll INF = 1'000'000'000'000'000'000LL;

vll dp(maxM, INF);

struct pos
{
    int i;
};

bool operator < (pos A, pos B)
{
    if(dp[A.i] == dp[B.i]) return A.i < B.i;
    else return dp[A.i] < dp[B.i];
}



struct segtree
{
    int l;
    int r;
    deque<pii> v;

    segtree* left = NULL;
    segtree* right = NULL;

    segtree()
    {
        ;
    }

    segtree(int L, int R)
    {
        l = L;
        r = R;
        if(l == r) return;

        int m = (l+r)/2;
        left = new segtree(l, m);
        right = new segtree(m+1, r);
    }

    void add(int I, ll Pr, ll val)
    {
        v.push_back({Pr, val});
        if(l != r)
        {
            if(I <= (l+r)/2) left->add(I, Pr, val);
            else right->add(I, Pr, val);
        }
    }

    void get(int L, int R, ll mxv)
    {
        if(R < l || r < L) return;
        else if(L <= l && r <= R)
        {
            while(1)
            {
                if(v.empty()) break;
                if(v[0].second > mxv) break;
                if(!visited[v[0].first])
                {
                    query_ans.push_back(v[0].first);
                    visited[v[0].first] = 1;
                }
                v.pop_front();
            }
        }
        else
        {
            left->get(L, R, mxv);
            right->get(L, R, mxv);
        }
    }
};

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int N, M;
    cin >> N >> M;

    P = vector<project>(M);
    for(int i = 0; i < M; i++) cin >> P[i].T >> P[i].L >> P[i].R >> P[i].C;

    sort(P.begin(), P.end(), [] (project x, project y)
    {
        return x.T < y.T;
    });

    for(int i = 0; i < M; i++) P[i].I = i;

    segtree U(0, M-1), D(0, M-1);

    sort(P.begin(), P.end(), [] (project x, project y)
    {
        return x.L + x.T <= y.L + y.T;
    });

    for(int i = 0; i < M; i++)
        U.add(P[i].I, P[i].I, P[i].L + P[i].T);

    sort(P.begin(), P.end(), [] (project x, project y)
    {
        return x.L - x.T < y.L - y.T;
    });

    for(int i = 0; i < M; i++)
        D.add(P[i].I, P[i].I, P[i].L - P[i].T);



    sort(P.begin(), P.end(), [] (project x, project y)
    {
        return x.I < y.I;
    });

    for(int i = 0; i < M; i++)
    {
        if(P[i].L == 1)
        {
            dp[i] = P[i].C;
            visited[i] = 1;
        }
    }


    set<pos> tbv;
    for(int i = 0; i < M; i++) tbv.insert(pos{i});

    while(!tbv.empty())
    {
        int u = tbv.begin()->i;
        tbv.erase(tbv.begin());
        // cerr << "visiting " << u << ' ' << P[u].L << ' ' << P[u].R <<  '\n';


        if(!visited[u]) break;


        query_ans.clear();
        U.get(u+1, M-1, P[u].R + P[u].T + 1);
        D.get(0, u-1, P[u].R - P[u].T + 1);

        for(int v: query_ans)
        {
            // cerr << u << " -> " << v << '\n';
            if(P[v].L <= P[u].R + 1 - abs(P[u].T - P[v].T))
            {
                if(dp[v] > dp[u] + P[v].C)
                {

                    tbv.erase(pos{v});
                    dp[v] = dp[u] + P[v].C;
                    tbv.insert(pos{v});
                }
            }
        }

    }

    ll final_ans = INF;
    for(int i = 0; i < M; i++)
        if(P[i].R == N)
            final_ans = min(final_ans, dp[i]);

    if(final_ans >= INF) final_ans = -1;

    cout << final_ans << '\n';
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 794 ms 307380 KB Output is correct
2 Correct 576 ms 307376 KB Output is correct
3 Runtime error 462 ms 524288 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1484 KB Output is correct
2 Correct 1 ms 1484 KB Output is correct
3 Correct 1 ms 1484 KB Output is correct
4 Correct 1 ms 1484 KB Output is correct
5 Correct 1 ms 1484 KB Output is correct
6 Correct 1 ms 1484 KB Output is correct
7 Correct 1 ms 1484 KB Output is correct
8 Correct 1 ms 1484 KB Output is correct
9 Correct 1 ms 1484 KB Output is correct
10 Correct 1 ms 1484 KB Output is correct
11 Correct 1 ms 1484 KB Output is correct
12 Correct 1 ms 1484 KB Output is correct
13 Correct 1 ms 1484 KB Output is correct
14 Correct 1 ms 1484 KB Output is correct
15 Correct 1 ms 1484 KB Output is correct
16 Correct 1 ms 1484 KB Output is correct
17 Correct 1 ms 1484 KB Output is correct
18 Correct 1 ms 1484 KB Output is correct
19 Correct 1 ms 1484 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1484 KB Output is correct
2 Correct 1 ms 1484 KB Output is correct
3 Correct 1 ms 1484 KB Output is correct
4 Correct 1 ms 1484 KB Output is correct
5 Correct 1 ms 1484 KB Output is correct
6 Correct 1 ms 1484 KB Output is correct
7 Correct 1 ms 1484 KB Output is correct
8 Correct 1 ms 1484 KB Output is correct
9 Correct 1 ms 1484 KB Output is correct
10 Correct 1 ms 1484 KB Output is correct
11 Correct 1 ms 1484 KB Output is correct
12 Correct 1 ms 1484 KB Output is correct
13 Correct 1 ms 1484 KB Output is correct
14 Correct 1 ms 1484 KB Output is correct
15 Correct 1 ms 1484 KB Output is correct
16 Correct 1 ms 1484 KB Output is correct
17 Correct 1 ms 1484 KB Output is correct
18 Correct 1 ms 1484 KB Output is correct
19 Correct 1 ms 1484 KB Output is correct
20 Correct 18 ms 16444 KB Output is correct
21 Correct 21 ms 16448 KB Output is correct
22 Correct 19 ms 16344 KB Output is correct
23 Correct 18 ms 16332 KB Output is correct
24 Correct 22 ms 16388 KB Output is correct
25 Correct 22 ms 16444 KB Output is correct
26 Correct 20 ms 16420 KB Output is correct
27 Correct 20 ms 16444 KB Output is correct
28 Correct 21 ms 16332 KB Output is correct
29 Correct 22 ms 16332 KB Output is correct
30 Correct 15 ms 16444 KB Output is correct
31 Correct 14 ms 16332 KB Output is correct
32 Correct 21 ms 16460 KB Output is correct
33 Correct 21 ms 16408 KB Output is correct
34 Correct 22 ms 16332 KB Output is correct
35 Correct 22 ms 16416 KB Output is correct
36 Correct 21 ms 16428 KB Output is correct
37 Correct 24 ms 16368 KB Output is correct

Subtask #4
0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 794 ms 307380 KB Output is correct
2 Correct 576 ms 307376 KB Output is correct
3 Runtime error 462 ms 524288 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -