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답안 #314289

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
314289 2020-10-19T12:43:45 Z mihai145 Pinball (JOI14_pinball) C++14
100 / 100
 735 ms 45952 KB 
#include <iostream>
#include <set>
#include <unordered_map>

using namespace std;

const long long INF = 1e18;
const int MMAX = 1e5;

int M, N;

struct device
{
    int A, B, C, D;
};
device a[MMAX + 2];

int k;
unordered_map <int, int> norm;

long long minAns = INF;

struct AintSt
{

    long long v[12 * MMAX];

    void Build(int node, int st, int dr)
    {

        v[node] = INF;

        if(st == dr)
        {
            return;
        }

        int mid = (st + dr) >> 1;
        Build(2 * node, st, mid);
        Build(2 * node + 1, mid + 1, dr);
    }

    void Update(int node, int st, int dr, int pos, long long val)
    {
        if(st == dr)
        {
            v[node] = min(v[node], val);
            return ;
        }

        int mid = (st + dr) >> 1;
        if(pos <= mid)
            Update(2 * node, st, mid, pos, val);
        else
            Update(2 * node + 1, mid + 1, dr, pos, val);

        v[node] = min(v[2 * node], v[2 * node + 1]);
    }

    long long Query(int node, int st, int dr, int l, int r)
    {
        if(l <= st && dr <= r)
            return v[node];

        if(dr < l || r < st)
            return INF;

        int mid = (st + dr) >> 1;
        long long a1 = Query(2 * node, st, mid, l, r);
        long long a2 = Query(2 * node + 1, mid + 1, dr, l, r);

        return min(a1, a2);
    }
};

struct AintDr
{
    long long v[12 * MMAX];

    void Build(int node, int st, int dr)
    {

        v[node] = INF;

        if(st == dr)
        {
            return;
        }

        int mid = (st + dr) >> 1;
        Build(2 * node, st, mid);
        Build(2 * node + 1, mid + 1, dr);
    }

    void Update(int node, int st, int dr, int pos, long long val)
    {
        if(st == dr)
        {
            v[node] = min(v[node], val);
            return ;
        }

        int mid = (st + dr) >> 1;
        if(pos <= mid)
            Update(2 * node, st, mid, pos, val);
        else
            Update(2 * node + 1, mid + 1, dr, pos, val);

        v[node] = min(v[2 * node], v[2 * node + 1]);
    }

    long long Query(int node, int st, int dr, int l, int r)
    {
        if(l <= st && dr <= r)
            return v[node];

        if(dr < l || r < st)
            return INF;

        int mid = (st + dr) >> 1;
        long long a1 = Query(2 * node, st, mid, l, r);
        long long a2 = Query(2 * node + 1, mid + 1, dr, l, r);

        return min(a1, a2);
    }
};

AintSt st;
AintDr dr;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    cin >> M >> N;

    set <int> coord; ///pot avea maxim 3 * M + 2 coordonate distincte
    coord.insert(1), coord.insert(N);

    for(int i = 1; i <= M; i++)
    {
        cin >> a[i].A >> a[i].B >> a[i].C >> a[i].D;
        coord.insert(a[i].A);
        coord.insert(a[i].B);
        coord.insert(a[i].C);
    }

    for(auto it : coord)
        norm[it] = ++k;

    st.Build(1, 1, k);
    dr.Build(1, 1, k);

    for(int i = 1; i <= M; i++)
    {

        long long minCostSt = INF, minCostDr = INF;

        if(norm[a[i].A] == 1)
        {
            minCostSt = a[i].D;
        }
        else
        {
            minCostSt = min(minCostSt, a[i].D + st.Query(1, 1, k, norm[a[i].A], norm[a[i].B]));
        }

        if(norm[a[i].B] == k)
        {
            minCostDr = a[i].D;
        }
        else
        {
            minCostDr = min(minCostDr, a[i].D + dr.Query(1, 1, k, norm[a[i].A], norm[a[i].B]));
        }

        st.Update(1, 1, k, norm[a[i].C], minCostSt);
        dr.Update(1, 1, k, norm[a[i].C], minCostDr);

        long long minCostCurr = min(INF, minCostSt + minCostDr - a[i].D);
        minAns = min(minAns, minCostCurr);
    }

    if(minAns >= INF)
        cout << -1 << '\n';
    else
        cout << minAns << '\n';

    return 0;
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 3 ms 512 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 3 ms 768 KB Output is correct
20 Correct 2 ms 512 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 3 ms 768 KB Output is correct
23 Correct 3 ms 768 KB Output is correct
24 Correct 4 ms 768 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 3 ms 512 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 3 ms 768 KB Output is correct
20 Correct 2 ms 512 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 3 ms 768 KB Output is correct
23 Correct 3 ms 768 KB Output is correct
24 Correct 4 ms 768 KB Output is correct
25 Correct 27 ms 3200 KB Output is correct
26 Correct 99 ms 7684 KB Output is correct
27 Correct 320 ms 14492 KB Output is correct
28 Correct 156 ms 2040 KB Output is correct
29 Correct 227 ms 13340 KB Output is correct
30 Correct 229 ms 4600 KB Output is correct
31 Correct 560 ms 25276 KB Output is correct
32 Correct 464 ms 16408 KB Output is correct
33 Correct 57 ms 7812 KB Output is correct
34 Correct 280 ms 23240 KB Output is correct
35 Correct 418 ms 45796 KB Output is correct
36 Correct 735 ms 45924 KB Output is correct
37 Correct 643 ms 45952 KB Output is correct
38 Correct 592 ms 45796 KB Output is correct