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Submission #198046

# Submission time Handle Problem Language Result Execution time Memory
198046 2020-01-24T14:52:05 Z Andrei_Cotor Toll (BOI17_toll) C++14
100 / 100
 270 ms 24952 KB 
#include<iostream>
#include<vector>

using namespace std;

vector<pair<int,int> > A[50005],Qu[50005];
int k,DpSt[50005][7][7],DpDr[50005][7][7],Rez[10005];
pair<int,int> Q[10005];

void solve(int st, int dr)
{
    if(st==dr)
    {
        for(auto qu:Qu[st])
        {
            if(qu.first!=st)
                continue;

            if(Q[qu.second].first==Q[qu.second].second)
                Rez[qu.second]=0;
        }
        return;
    }

    int mij=(st+dr)/2;

    for(int i=st; i<=mij; i++)
        for(int j=0; j<k; j++)
            for(int ind=0; ind<k; ind++)
                DpSt[i][j][ind]=1000000000;

    for(int i=mij; i<=dr; i++)
        for(int j=0; j<k; j++)
            for(int ind=0; ind<k; ind++)
                DpDr[i][j][ind]=1000000000;

    for(int i=0; i<k; i++)
        DpSt[mij][i][i]=DpDr[mij][i][i]=0;

    for(int i=mij; i<dr; i++)
    {
        for(int j=0; j<k; j++)   //la mij am fost in j
        {
            for(int ind=0; ind<k; ind++)   //la i am fost in ind
            {
                for(auto other:A[i*k+ind])
                    DpDr[i+1][j][other.first%k]=min(DpDr[i+1][j][other.first%k],DpDr[i][j][ind]+other.second);
            }
        }
    }

    for(int i=mij-1; i>=st; i--)
    {
        for(int j=0; j<k; j++)
        {
            for(int ind=0; ind<k; ind++)
            {
                for(auto other:A[i*k+ind])
                    DpSt[i][j][ind]=min(DpSt[i][j][ind],DpSt[i+1][j][other.first%k]+other.second);
            }
        }
    }

    for(int i=st; i<=mij; i++)
    {
        for(auto qu:Qu[i])
        {
            if(qu.first<=mij || qu.first>dr)
                continue;

            for(int j=0; j<k; j++)
                Rez[qu.second]=min(Rez[qu.second],DpSt[i][j][Q[qu.second].first%k]+DpDr[qu.first][j][Q[qu.second].second%k]);
        }
    }

    solve(st,mij);
    solve(mij+1,dr);
}

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

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

    for(int i=1; i<=m; i++)
    {
        int x,y,t;
        cin>>x>>y>>t;
        A[x].push_back({y,t});
    }

    for(int i=1; i<=q; i++)
    {
        int x,y;
        cin>>x>>y;

        Q[i]={x,y};
        Qu[x/k].push_back({y/k,i});

        Rez[i]=1000000000;
    }

    solve(0,n/k);

    for(int i=1; i<=q; i++)
    {
        if(Rez[i]==1000000000)
            cout<<"-1\n";
        else
            cout<<Rez[i]<<"\n";
    }
    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 24952 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 3192 KB Output is correct
6 Correct 2 ms 3188 KB Output is correct
7 Correct 6 ms 3192 KB Output is correct
8 Correct 80 ms 24824 KB Output is correct
9 Correct 80 ms 24732 KB Output is correct
10 Correct 34 ms 22392 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 16000 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2736 KB Output is correct
5 Correct 4 ms 2680 KB Output is correct
6 Correct 4 ms 2680 KB Output is correct
7 Correct 8 ms 3576 KB Output is correct
8 Correct 10 ms 3452 KB Output is correct
9 Correct 96 ms 24696 KB Output is correct
10 Correct 162 ms 14328 KB Output is correct
11 Correct 115 ms 16076 KB Output is correct
12 Correct 111 ms 12252 KB Output is correct
13 Correct 201 ms 10252 KB Output is correct
14 Correct 99 ms 9848 KB Output is correct
15 Correct 106 ms 7672 KB Output is correct
16 Correct 104 ms 7672 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 5 ms 2680 KB Output is correct
3 Correct 3 ms 2680 KB Output is correct
4 Correct 5 ms 2680 KB Output is correct
5 Correct 4 ms 2680 KB Output is correct
6 Correct 5 ms 3064 KB Output is correct
7 Correct 6 ms 3064 KB Output is correct
8 Correct 8 ms 2936 KB Output is correct
9 Correct 7 ms 2936 KB Output is correct
10 Correct 73 ms 24184 KB Output is correct
11 Correct 104 ms 15384 KB Output is correct
12 Correct 157 ms 13688 KB Output is correct
13 Correct 178 ms 14240 KB Output is correct
14 Correct 138 ms 12912 KB Output is correct
15 Correct 111 ms 7624 KB Output is correct
16 Correct 100 ms 7544 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 5 ms 2680 KB Output is correct
3 Correct 3 ms 2680 KB Output is correct
4 Correct 5 ms 2680 KB Output is correct
5 Correct 4 ms 2680 KB Output is correct
6 Correct 5 ms 3064 KB Output is correct
7 Correct 6 ms 3064 KB Output is correct
8 Correct 8 ms 2936 KB Output is correct
9 Correct 7 ms 2936 KB Output is correct
10 Correct 73 ms 24184 KB Output is correct
11 Correct 104 ms 15384 KB Output is correct
12 Correct 157 ms 13688 KB Output is correct
13 Correct 178 ms 14240 KB Output is correct
14 Correct 138 ms 12912 KB Output is correct
15 Correct 111 ms 7624 KB Output is correct
16 Correct 100 ms 7544 KB Output is correct
17 Correct 112 ms 15588 KB Output is correct
18 Correct 4 ms 2680 KB Output is correct
19 Correct 5 ms 2680 KB Output is correct
20 Correct 4 ms 2680 KB Output is correct
21 Correct 4 ms 2680 KB Output is correct
22 Correct 4 ms 2680 KB Output is correct
23 Correct 9 ms 3320 KB Output is correct
24 Correct 7 ms 3168 KB Output is correct
25 Correct 9 ms 3064 KB Output is correct
26 Correct 8 ms 3064 KB Output is correct
27 Correct 73 ms 24440 KB Output is correct
28 Correct 186 ms 14068 KB Output is correct
29 Correct 183 ms 14360 KB Output is correct
30 Correct 137 ms 13048 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 24952 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 4 ms 2680 KB Output is correct
4 Correct 4 ms 2680 KB Output is correct
5 Correct 5 ms 3192 KB Output is correct
6 Correct 2 ms 3188 KB Output is correct
7 Correct 6 ms 3192 KB Output is correct
8 Correct 80 ms 24824 KB Output is correct
9 Correct 80 ms 24732 KB Output is correct
10 Correct 34 ms 22392 KB Output is correct
11 Correct 108 ms 16000 KB Output is correct
12 Correct 4 ms 2680 KB Output is correct
13 Correct 4 ms 2680 KB Output is correct
14 Correct 4 ms 2736 KB Output is correct
15 Correct 4 ms 2680 KB Output is correct
16 Correct 4 ms 2680 KB Output is correct
17 Correct 8 ms 3576 KB Output is correct
18 Correct 10 ms 3452 KB Output is correct
19 Correct 96 ms 24696 KB Output is correct
20 Correct 162 ms 14328 KB Output is correct
21 Correct 115 ms 16076 KB Output is correct
22 Correct 111 ms 12252 KB Output is correct
23 Correct 201 ms 10252 KB Output is correct
24 Correct 99 ms 9848 KB Output is correct
25 Correct 106 ms 7672 KB Output is correct
26 Correct 104 ms 7672 KB Output is correct
27 Correct 4 ms 2680 KB Output is correct
28 Correct 5 ms 2680 KB Output is correct
29 Correct 3 ms 2680 KB Output is correct
30 Correct 5 ms 2680 KB Output is correct
31 Correct 4 ms 2680 KB Output is correct
32 Correct 5 ms 3064 KB Output is correct
33 Correct 6 ms 3064 KB Output is correct
34 Correct 8 ms 2936 KB Output is correct
35 Correct 7 ms 2936 KB Output is correct
36 Correct 73 ms 24184 KB Output is correct
37 Correct 104 ms 15384 KB Output is correct
38 Correct 157 ms 13688 KB Output is correct
39 Correct 178 ms 14240 KB Output is correct
40 Correct 138 ms 12912 KB Output is correct
41 Correct 111 ms 7624 KB Output is correct
42 Correct 100 ms 7544 KB Output is correct
43 Correct 112 ms 15588 KB Output is correct
44 Correct 4 ms 2680 KB Output is correct
45 Correct 5 ms 2680 KB Output is correct
46 Correct 4 ms 2680 KB Output is correct
47 Correct 4 ms 2680 KB Output is correct
48 Correct 4 ms 2680 KB Output is correct
49 Correct 9 ms 3320 KB Output is correct
50 Correct 7 ms 3168 KB Output is correct
51 Correct 9 ms 3064 KB Output is correct
52 Correct 8 ms 3064 KB Output is correct
53 Correct 73 ms 24440 KB Output is correct
54 Correct 186 ms 14068 KB Output is correct
55 Correct 183 ms 14360 KB Output is correct
56 Correct 137 ms 13048 KB Output is correct
57 Correct 270 ms 13828 KB Output is correct
58 Correct 80 ms 24712 KB Output is correct
59 Correct 115 ms 16092 KB Output is correct