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Submission #1082186

# Submission time Handle Problem Language Result Execution time Memory
1082186 2024-08-30T20:09:23 Z TlenekWodoru Highway Tolls (IOI18_highway) C++17
90 / 100
 186 ms 11628 KB 
#include<bits/stdc++.h>
#include "highway.h"
using namespace std;
struct Edge
{
    int b,c;
};
vector<Edge>D[90009];
int n,m;
long long DeafOdl;
vector<int>DeafQuery;
vector<int>BFS(int s)
{
    vector<int>ODL(n,-1);
    ODL[s]=0;
    deque<int>Y={s};
    vector<int>W;
    while((int)Y.size()>0)
    {
        const int v=Y[0];
        Y.pop_front();
        W.push_back(v);
        for(auto[som,ind] : D[v])
        {
            if(ODL[som]==-1)
            {
                ODL[som]=ODL[v]+1;
                Y.push_back(som);
            }
        }
    }
    return W;
}
int BinSearch()
{
    int l=0,p=n-1;
    while(l<p)
    {
        const int mid=(l+p+1)>>1;
        vector<int>Query(m);
        for(int i=mid;i<n;i++)
        {
            for(auto[som,ind] : D[i])
            {
                Query[ind]=1;
            }
        }
        if(ask(Query)!=DeafOdl)
        {
            l=mid;
        }
        else
        {
            p=mid-1;
        }
    }
    return l;
}
int BinSearch2(int s)
{
    vector<int>W=BFS(s);
    int l=0,p=n-1;
    while(l<p)
    {
        const int mid=(l+p+1)>>1;
        vector<int>Query=DeafQuery;
        for(int i=mid;i<n;i++)
        {
            for(auto[som,ind] : D[W[i]])
            {
                Query[ind]=1;
            }
        }
        if(ask(Query)!=DeafOdl)
        {
            l=mid;
        }
        else
        {
            p=mid-1;
        }
    }
    return W[l];
}
void find_pair(int N, vector<int>E1, vector<int>E2, int A, int B)
{
    n=N;
    m=E1.size();
    for(int i=0;i<m;i++)
    {
        D[E1[i]].push_back({E2[i],i});
        D[E2[i]].push_back({E1[i],i});
    }
    DeafOdl=ask(vector<int>(m));
    int u=BinSearch();
    DeafQuery.resize(m);
    for(int i=u+1;i<n;i++)
    {
        for(auto[som,ind] : D[i])
        {
            DeafQuery[ind]=1;
        }
    }
    int a=BinSearch2(u);
    int b=BinSearch2(a);
    if(a>b){swap(a,b);}
    //cout<<"a="<<a<<" b="<<b<<" u="<<u<<" DeafOdl="<<DeafOdl<<endl;
    answer(a,b);
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 2 ms 2392 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 2 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2356 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2392 KB Output is correct
2 Correct 10 ms 3160 KB Output is correct
3 Correct 117 ms 8956 KB Output is correct
4 Correct 101 ms 8924 KB Output is correct
5 Correct 110 ms 8932 KB Output is correct
6 Correct 91 ms 8928 KB Output is correct
7 Correct 110 ms 8904 KB Output is correct
8 Correct 114 ms 9100 KB Output is correct
9 Correct 116 ms 8932 KB Output is correct
10 Correct 106 ms 8924 KB Output is correct
11 Correct 102 ms 8340 KB Output is correct
12 Correct 106 ms 8344 KB Output is correct
13 Correct 104 ms 8616 KB Output is correct
14 Correct 108 ms 8344 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 3160 KB Output is correct
2 Correct 18 ms 3832 KB Output is correct
3 Correct 24 ms 4424 KB Output is correct
4 Correct 73 ms 8340 KB Output is correct
5 Correct 74 ms 8360 KB Output is correct
6 Correct 71 ms 8340 KB Output is correct
7 Correct 74 ms 8612 KB Output is correct
8 Correct 72 ms 8300 KB Output is correct
9 Correct 78 ms 8584 KB Output is correct

Subtask #4
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 11 ms 3264 KB Output is correct
3 Correct 92 ms 7636 KB Output is correct
4 Correct 142 ms 9156 KB Output is correct
5 Correct 113 ms 8924 KB Output is correct
6 Correct 115 ms 8924 KB Output is correct
7 Correct 117 ms 8964 KB Output is correct
8 Correct 118 ms 8924 KB Output is correct
9 Correct 101 ms 8928 KB Output is correct
10 Correct 113 ms 8908 KB Output is correct
11 Correct 97 ms 8348 KB Output is correct
12 Correct 107 ms 8592 KB Output is correct
13 Correct 98 ms 8348 KB Output is correct
14 Correct 102 ms 8512 KB Output is correct
15 Correct 115 ms 8952 KB Output is correct
16 Correct 112 ms 8936 KB Output is correct
17 Correct 96 ms 8408 KB Output is correct
18 Correct 102 ms 8348 KB Output is correct
19 Correct 123 ms 9064 KB Output is correct
20 Correct 102 ms 8356 KB Output is correct
21 Correct 92 ms 9444 KB Output is correct
22 Correct 85 ms 9440 KB Output is correct
23 Correct 82 ms 9272 KB Output is correct
24 Correct 80 ms 9128 KB Output is correct
25 Correct 98 ms 8676 KB Output is correct

Subtask #5
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 3160 KB Output is correct
2 Correct 12 ms 3160 KB Output is correct
3 Correct 124 ms 9472 KB Output is correct
4 Correct 143 ms 9748 KB Output is correct
5 Correct 158 ms 11344 KB Output is correct
6 Correct 164 ms 11208 KB Output is correct
7 Correct 151 ms 11204 KB Output is correct
8 Correct 158 ms 11192 KB Output is correct
9 Correct 111 ms 8972 KB Output is correct
10 Correct 111 ms 9852 KB Output is correct
11 Correct 110 ms 9776 KB Output is correct
12 Correct 151 ms 10828 KB Output is correct
13 Correct 148 ms 11020 KB Output is correct
14 Correct 134 ms 11216 KB Output is correct
15 Correct 145 ms 11164 KB Output is correct
16 Correct 125 ms 10240 KB Output is correct
17 Correct 90 ms 9460 KB Output is correct
18 Correct 99 ms 9636 KB Output is correct
19 Correct 108 ms 9712 KB Output is correct
20 Correct 100 ms 9636 KB Output is correct
21 Correct 179 ms 10968 KB Output is correct

Subtask #6
21.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 3156 KB Output is correct
2 Correct 11 ms 3160 KB Output is correct
3 Partially correct 143 ms 9368 KB Output is partially correct
4 Partially correct 134 ms 9468 KB Output is partially correct
5 Correct 127 ms 9904 KB Output is correct
6 Partially correct 151 ms 11152 KB Output is partially correct
7 Partially correct 138 ms 9772 KB Output is partially correct
8 Partially correct 130 ms 9488 KB Output is partially correct
9 Partially correct 151 ms 9744 KB Output is partially correct
10 Partially correct 176 ms 11196 KB Output is partially correct
11 Correct 173 ms 11200 KB Output is correct
12 Partially correct 167 ms 11184 KB Output is partially correct
13 Correct 127 ms 10000 KB Output is correct
14 Correct 108 ms 9432 KB Output is correct
15 Correct 116 ms 9792 KB Output is correct
16 Correct 112 ms 9420 KB Output is correct
17 Correct 137 ms 10000 KB Output is correct
18 Correct 107 ms 9492 KB Output is correct
19 Correct 146 ms 10828 KB Output is correct
20 Partially correct 169 ms 11004 KB Output is partially correct
21 Partially correct 146 ms 11436 KB Output is partially correct
22 Correct 157 ms 11208 KB Output is correct
23 Correct 148 ms 11628 KB Output is correct
24 Partially correct 164 ms 11212 KB Output is partially correct
25 Partially correct 186 ms 11208 KB Output is partially correct
26 Partially correct 180 ms 11220 KB Output is partially correct
27 Correct 111 ms 9580 KB Output is correct
28 Correct 102 ms 9484 KB Output is correct
29 Partially correct 110 ms 10136 KB Output is partially correct
30 Partially correct 93 ms 9552 KB Output is partially correct
31 Partially correct 109 ms 9536 KB Output is partially correct
32 Correct 89 ms 9436 KB Output is correct
33 Correct 92 ms 9700 KB Output is correct
34 Correct 97 ms 9556 KB Output is correct
35 Partially correct 104 ms 9536 KB Output is partially correct
36 Correct 92 ms 9444 KB Output is correct
37 Partially correct 112 ms 10140 KB Output is partially correct
38 Correct 95 ms 9568 KB Output is correct
39 Correct 156 ms 10872 KB Output is correct
40 Correct 157 ms 10720 KB Output is correct
41 Correct 125 ms 10704 KB Output is correct
42 Correct 186 ms 10700 KB Output is correct