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Submission #531479

# Submission time Handle Problem Language Result Execution time Memory
531479 2022-02-28T20:14:20 Z mat50013 Toll (BOI17_toll) C++11
100 / 100
 274 ms 23272 KB 
#include <bits/stdc++.h>

using namespace std;

using ll = long long;
const int NMAX(50005);
const ll INF(LLONG_MAX / 2 - 5);
vector<pair<int, int> > G[NMAX];
int k;
struct matrice
{
    vector<vector<ll> > mat;
    matrice()
    {
        mat = vector<vector<ll> > (k, vector<ll>(k, INF));
    }
    matrice operator+(matrice b)
    {
        matrice rez;
        for(int i = 0; i < k; ++i)
            for(int j = 0; j < k; ++j)
                for(int interm = 0; interm < k; ++interm)
                    rez.mat[i][j] = min(rez.mat[i][j], mat[i][interm] + b.mat[interm][j]);
        return rez;
    }
} v[NMAX];

struct SegmentTree
{
    vector<matrice> Arb;
    SegmentTree(int n)
    {
        int put = 1;
        while(put <= n)
            put <<= 1;
        put <<= 1;
        Arb.resize(put);
    }
    inline void build(int nod, int st, int dr)
    {
        if(st > dr)
            return;
        if(st == dr)
        {
            Arb[nod] = v[st];
            return;
        }
        int mij = (st + dr) / 2;
        build(2 * nod, st, mij);
        build(2 * nod + 1, mij + 1, dr);
        Arb[nod] = Arb[2 * nod] + Arb[2 * nod + 1];
    }

    matrice Query(int nod, int st, int dr, int a, int b)
    {
        if(a <= st && dr <= b)
            return Arb[nod];
        int mij = (st + dr) / 2;
        matrice rez1, rez2;
        bool ok1 = 0, ok2 = 0;
        if(a <= mij)
            rez1 = Query(2 * nod, st, mij, a, b), ok1 = 1;
        if(b > mij)
            rez2 = Query(2 * nod + 1, mij + 1, dr, a, b), ok2 = 1;
        if(ok1 && ok2)
            return rez1 + rez2;
        if(ok1)
            return rez1;
        return rez2;
    }
};

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

    int n, m, o;
    cin >> k >> n >> m >> o;

    for(int i = 1; i <= m; ++i)
    {
        int a, b, t;
        cin >> a >> b >> t;
        G[a].push_back({b, t});
    }

    for(int segm = 0; segm <= n / k; ++segm)
    {
        matrice aux;
        for(int j = 0; j < k; ++j)
        {
            int nod = segm * k + j;
            for(auto it: G[nod])
                aux.mat[j][it.first % k] = it.second;
        }
        v[segm] = aux;
    }

    SegmentTree Seg(n / k);
    Seg.build(1, 0, n / k);
    for(int i = 1; i <= o; ++i)
    {
        int a, b;
        cin >> a >> b;

        if(a / k == b / k){
            cout << -1 << '\n';
            continue;
        }
        auto rez = Seg.Query(1, 0, n / k, a / k, b / k - 1);
        cout << (rez.mat[a % k][b % k] == INF ? -1 : rez.mat[a % k][b % k]) << '\n';
    }
    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 113 ms 19008 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2692 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 6 ms 2892 KB Output is correct
6 Correct 6 ms 2844 KB Output is correct
7 Correct 6 ms 2892 KB Output is correct
8 Correct 150 ms 19692 KB Output is correct
9 Correct 119 ms 19388 KB Output is correct
10 Correct 99 ms 17136 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 17436 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2664 KB Output is correct
5 Correct 3 ms 2764 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 28 ms 2924 KB Output is correct
8 Correct 29 ms 3012 KB Output is correct
9 Correct 86 ms 19472 KB Output is correct
10 Correct 138 ms 22840 KB Output is correct
11 Correct 122 ms 18788 KB Output is correct
12 Correct 116 ms 21044 KB Output is correct
13 Correct 96 ms 15952 KB Output is correct
14 Correct 66 ms 13696 KB Output is correct
15 Correct 69 ms 13560 KB Output is correct
16 Correct 76 ms 13636 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 3 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 3 ms 2668 KB Output is correct
6 Correct 3 ms 2892 KB Output is correct
7 Correct 3 ms 2796 KB Output is correct
8 Correct 5 ms 3020 KB Output is correct
9 Correct 4 ms 2892 KB Output is correct
10 Correct 50 ms 19324 KB Output is correct
11 Correct 55 ms 18576 KB Output is correct
12 Correct 94 ms 22668 KB Output is correct
13 Correct 92 ms 23272 KB Output is correct
14 Correct 64 ms 22000 KB Output is correct
15 Correct 40 ms 13620 KB Output is correct
16 Correct 39 ms 13548 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 3 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 3 ms 2668 KB Output is correct
6 Correct 3 ms 2892 KB Output is correct
7 Correct 3 ms 2796 KB Output is correct
8 Correct 5 ms 3020 KB Output is correct
9 Correct 4 ms 2892 KB Output is correct
10 Correct 50 ms 19324 KB Output is correct
11 Correct 55 ms 18576 KB Output is correct
12 Correct 94 ms 22668 KB Output is correct
13 Correct 92 ms 23272 KB Output is correct
14 Correct 64 ms 22000 KB Output is correct
15 Correct 40 ms 13620 KB Output is correct
16 Correct 39 ms 13548 KB Output is correct
17 Correct 85 ms 18640 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 2 ms 2636 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 3 ms 2560 KB Output is correct
23 Correct 14 ms 2976 KB Output is correct
24 Correct 17 ms 2968 KB Output is correct
25 Correct 27 ms 3080 KB Output is correct
26 Correct 25 ms 3020 KB Output is correct
27 Correct 70 ms 19432 KB Output is correct
28 Correct 101 ms 22812 KB Output is correct
29 Correct 137 ms 23260 KB Output is correct
30 Correct 134 ms 22060 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 113 ms 19008 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2692 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 6 ms 2892 KB Output is correct
6 Correct 6 ms 2844 KB Output is correct
7 Correct 6 ms 2892 KB Output is correct
8 Correct 150 ms 19692 KB Output is correct
9 Correct 119 ms 19388 KB Output is correct
10 Correct 99 ms 17136 KB Output is correct
11 Correct 101 ms 17436 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2664 KB Output is correct
15 Correct 3 ms 2764 KB Output is correct
16 Correct 2 ms 2636 KB Output is correct
17 Correct 28 ms 2924 KB Output is correct
18 Correct 29 ms 3012 KB Output is correct
19 Correct 86 ms 19472 KB Output is correct
20 Correct 138 ms 22840 KB Output is correct
21 Correct 122 ms 18788 KB Output is correct
22 Correct 116 ms 21044 KB Output is correct
23 Correct 96 ms 15952 KB Output is correct
24 Correct 66 ms 13696 KB Output is correct
25 Correct 69 ms 13560 KB Output is correct
26 Correct 76 ms 13636 KB Output is correct
27 Correct 2 ms 2636 KB Output is correct
28 Correct 3 ms 2636 KB Output is correct
29 Correct 2 ms 2636 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 3 ms 2668 KB Output is correct
32 Correct 3 ms 2892 KB Output is correct
33 Correct 3 ms 2796 KB Output is correct
34 Correct 5 ms 3020 KB Output is correct
35 Correct 4 ms 2892 KB Output is correct
36 Correct 50 ms 19324 KB Output is correct
37 Correct 55 ms 18576 KB Output is correct
38 Correct 94 ms 22668 KB Output is correct
39 Correct 92 ms 23272 KB Output is correct
40 Correct 64 ms 22000 KB Output is correct
41 Correct 40 ms 13620 KB Output is correct
42 Correct 39 ms 13548 KB Output is correct
43 Correct 85 ms 18640 KB Output is correct
44 Correct 2 ms 2636 KB Output is correct
45 Correct 2 ms 2636 KB Output is correct
46 Correct 2 ms 2636 KB Output is correct
47 Correct 2 ms 2636 KB Output is correct
48 Correct 3 ms 2560 KB Output is correct
49 Correct 14 ms 2976 KB Output is correct
50 Correct 17 ms 2968 KB Output is correct
51 Correct 27 ms 3080 KB Output is correct
52 Correct 25 ms 3020 KB Output is correct
53 Correct 70 ms 19432 KB Output is correct
54 Correct 101 ms 22812 KB Output is correct
55 Correct 137 ms 23260 KB Output is correct
56 Correct 134 ms 22060 KB Output is correct
57 Correct 274 ms 23032 KB Output is correct
58 Correct 130 ms 19580 KB Output is correct
59 Correct 165 ms 18920 KB Output is correct