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답안 #1046263

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1046263 2024-08-06T12:17:06 Z I_FloPPed21 경주 (Race) (IOI11_race) C++14
100 / 100
 301 ms 119124 KB 
#include <bits/stdc++.h>

using namespace std;
map<int,long long> mp[300005] ;
vector<pair<int,long long>> adj[300005];
long long target = 0,sum[300005],height[300005],ans = 1e9,n,k;

void precomp(int nod, int p, int hd)
{
    height[nod] = hd ;
    for ( auto u : adj[nod] )
    {
        if ( u.first != p )
        {
            sum[u.first] += sum[nod]  + u.second;
            precomp(u.first,nod,hd + 1);
        }
    }
}

void small(int nod,int p )
{
    mp[nod][sum[nod]] = height[nod];
    long long real_target = target + 2 * sum[nod];
    for ( auto u : adj[nod] )
    {
        if ( u.first != p )
        {
            small(u.first,nod);
        }
    }

    for ( auto u : adj[nod] )
    {
        if( u.first != p )
        {
            if( mp[u.first].size() > mp[nod].size())
                swap(mp[nod],mp[u.first]);

            for ( auto k : mp[u.first] )
            {
                long long real = real_target - k.first ;

                if ( mp[nod].find(real) != mp[nod].end())
                {
                    //cout << nod << " " << u.first << " " << k.first << " " << k.second << '\n';
                    ans = min ( ans, k.second + mp[nod][real] - 2 * height[nod]);
                }


            }

            for ( auto k : mp[u.first])
            {
                if( mp[nod].find(k.first) == mp[nod].end() )
                    mp[nod][k.first] = k .second;
                else
                    mp[nod][k.first] = min(mp[nod][k.first],k.second);

            }
        }
    }

    /*if( nod == 6)
    {
        cout << mp[nod][real_target]<< '\n';
    }*/
}
int best_path(int N, int K, int H[][2], int L [] )
{
    if( K == 1 )
    {
        return 0 ;
    }
    target =K ;

    for ( int i = 0; i < N - 1  ; i ++ )
    {
        adj[H[i][1]].push_back({H[i][0],L[i]});
        adj[H[i][0]].push_back({H[i][1],L[i]});
    }


    precomp(0,-1,1);
    small(0,-1);
    if ( ans == 1e9 )
        return -1;
    else
        return ans;
}
//int v[200005];
/*int main()
{
   cin >> n >> k;
   for ( int i = 1; i < n ; i ++ )
   {
       cin >> h[i][0] >> h[i][1] >> v[i] ;
   }

   cout << best_path(n,k,h,v);

   return 0;
}*/

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 25688 KB Output is correct
2 Correct 3 ms 25692 KB Output is correct
3 Correct 3 ms 25692 KB Output is correct
4 Correct 3 ms 25692 KB Output is correct
5 Correct 3 ms 25688 KB Output is correct
6 Correct 3 ms 25692 KB Output is correct
7 Correct 4 ms 25692 KB Output is correct
8 Correct 4 ms 25688 KB Output is correct
9 Correct 3 ms 25692 KB Output is correct
10 Correct 3 ms 25692 KB Output is correct
11 Correct 3 ms 25944 KB Output is correct
12 Correct 3 ms 25692 KB Output is correct
13 Correct 3 ms 25692 KB Output is correct
14 Correct 3 ms 25692 KB Output is correct
15 Correct 3 ms 25692 KB Output is correct
16 Correct 3 ms 25692 KB Output is correct
17 Correct 3 ms 25692 KB Output is correct
18 Correct 3 ms 25692 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 25688 KB Output is correct
2 Correct 3 ms 25692 KB Output is correct
3 Correct 3 ms 25692 KB Output is correct
4 Correct 3 ms 25692 KB Output is correct
5 Correct 3 ms 25688 KB Output is correct
6 Correct 3 ms 25692 KB Output is correct
7 Correct 4 ms 25692 KB Output is correct
8 Correct 4 ms 25688 KB Output is correct
9 Correct 3 ms 25692 KB Output is correct
10 Correct 3 ms 25692 KB Output is correct
11 Correct 3 ms 25944 KB Output is correct
12 Correct 3 ms 25692 KB Output is correct
13 Correct 3 ms 25692 KB Output is correct
14 Correct 3 ms 25692 KB Output is correct
15 Correct 3 ms 25692 KB Output is correct
16 Correct 3 ms 25692 KB Output is correct
17 Correct 3 ms 25692 KB Output is correct
18 Correct 3 ms 25692 KB Output is correct
19 Correct 4 ms 25692 KB Output is correct
20 Correct 3 ms 25780 KB Output is correct
21 Correct 4 ms 26060 KB Output is correct
22 Correct 4 ms 25948 KB Output is correct
23 Correct 4 ms 25948 KB Output is correct
24 Correct 3 ms 25948 KB Output is correct
25 Correct 4 ms 25948 KB Output is correct
26 Correct 4 ms 25948 KB Output is correct
27 Correct 3 ms 25948 KB Output is correct
28 Correct 4 ms 25948 KB Output is correct
29 Correct 4 ms 26072 KB Output is correct
30 Correct 4 ms 25948 KB Output is correct
31 Correct 3 ms 25948 KB Output is correct
32 Correct 4 ms 25948 KB Output is correct
33 Correct 4 ms 25948 KB Output is correct
34 Correct 4 ms 26072 KB Output is correct
35 Correct 4 ms 25948 KB Output is correct
36 Correct 3 ms 25948 KB Output is correct
37 Correct 3 ms 25948 KB Output is correct
38 Correct 3 ms 26044 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 25688 KB Output is correct
2 Correct 3 ms 25692 KB Output is correct
3 Correct 3 ms 25692 KB Output is correct
4 Correct 3 ms 25692 KB Output is correct
5 Correct 3 ms 25688 KB Output is correct
6 Correct 3 ms 25692 KB Output is correct
7 Correct 4 ms 25692 KB Output is correct
8 Correct 4 ms 25688 KB Output is correct
9 Correct 3 ms 25692 KB Output is correct
10 Correct 3 ms 25692 KB Output is correct
11 Correct 3 ms 25944 KB Output is correct
12 Correct 3 ms 25692 KB Output is correct
13 Correct 3 ms 25692 KB Output is correct
14 Correct 3 ms 25692 KB Output is correct
15 Correct 3 ms 25692 KB Output is correct
16 Correct 3 ms 25692 KB Output is correct
17 Correct 3 ms 25692 KB Output is correct
18 Correct 3 ms 25692 KB Output is correct
19 Correct 80 ms 52636 KB Output is correct
20 Correct 74 ms 52396 KB Output is correct
21 Correct 76 ms 52120 KB Output is correct
22 Correct 70 ms 51796 KB Output is correct
23 Correct 103 ms 64716 KB Output is correct
24 Correct 75 ms 54868 KB Output is correct
25 Correct 63 ms 51792 KB Output is correct
26 Correct 44 ms 58360 KB Output is correct
27 Correct 107 ms 64080 KB Output is correct
28 Correct 205 ms 99920 KB Output is correct
29 Correct 181 ms 98620 KB Output is correct
30 Correct 106 ms 64084 KB Output is correct
31 Correct 110 ms 64084 KB Output is correct
32 Correct 134 ms 64080 KB Output is correct
33 Correct 155 ms 68948 KB Output is correct
34 Correct 207 ms 101740 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 25688 KB Output is correct
2 Correct 3 ms 25692 KB Output is correct
3 Correct 3 ms 25692 KB Output is correct
4 Correct 3 ms 25692 KB Output is correct
5 Correct 3 ms 25688 KB Output is correct
6 Correct 3 ms 25692 KB Output is correct
7 Correct 4 ms 25692 KB Output is correct
8 Correct 4 ms 25688 KB Output is correct
9 Correct 3 ms 25692 KB Output is correct
10 Correct 3 ms 25692 KB Output is correct
11 Correct 3 ms 25944 KB Output is correct
12 Correct 3 ms 25692 KB Output is correct
13 Correct 3 ms 25692 KB Output is correct
14 Correct 3 ms 25692 KB Output is correct
15 Correct 3 ms 25692 KB Output is correct
16 Correct 3 ms 25692 KB Output is correct
17 Correct 3 ms 25692 KB Output is correct
18 Correct 3 ms 25692 KB Output is correct
19 Correct 4 ms 25692 KB Output is correct
20 Correct 3 ms 25780 KB Output is correct
21 Correct 4 ms 26060 KB Output is correct
22 Correct 4 ms 25948 KB Output is correct
23 Correct 4 ms 25948 KB Output is correct
24 Correct 3 ms 25948 KB Output is correct
25 Correct 4 ms 25948 KB Output is correct
26 Correct 4 ms 25948 KB Output is correct
27 Correct 3 ms 25948 KB Output is correct
28 Correct 4 ms 25948 KB Output is correct
29 Correct 4 ms 26072 KB Output is correct
30 Correct 4 ms 25948 KB Output is correct
31 Correct 3 ms 25948 KB Output is correct
32 Correct 4 ms 25948 KB Output is correct
33 Correct 4 ms 25948 KB Output is correct
34 Correct 4 ms 26072 KB Output is correct
35 Correct 4 ms 25948 KB Output is correct
36 Correct 3 ms 25948 KB Output is correct
37 Correct 3 ms 25948 KB Output is correct
38 Correct 3 ms 26044 KB Output is correct
39 Correct 80 ms 52636 KB Output is correct
40 Correct 74 ms 52396 KB Output is correct
41 Correct 76 ms 52120 KB Output is correct
42 Correct 70 ms 51796 KB Output is correct
43 Correct 103 ms 64716 KB Output is correct
44 Correct 75 ms 54868 KB Output is correct
45 Correct 63 ms 51792 KB Output is correct
46 Correct 44 ms 58360 KB Output is correct
47 Correct 107 ms 64080 KB Output is correct
48 Correct 205 ms 99920 KB Output is correct
49 Correct 181 ms 98620 KB Output is correct
50 Correct 106 ms 64084 KB Output is correct
51 Correct 110 ms 64084 KB Output is correct
52 Correct 134 ms 64080 KB Output is correct
53 Correct 155 ms 68948 KB Output is correct
54 Correct 207 ms 101740 KB Output is correct
55 Correct 12 ms 29016 KB Output is correct
56 Correct 8 ms 27812 KB Output is correct
57 Correct 44 ms 50116 KB Output is correct
58 Correct 32 ms 42444 KB Output is correct
59 Correct 59 ms 64716 KB Output is correct
60 Correct 187 ms 98896 KB Output is correct
61 Correct 153 ms 67416 KB Output is correct
62 Correct 124 ms 64136 KB Output is correct
63 Correct 166 ms 64168 KB Output is correct
64 Correct 301 ms 119124 KB Output is correct
65 Correct 277 ms 117076 KB Output is correct
66 Correct 192 ms 95572 KB Output is correct
67 Correct 95 ms 56756 KB Output is correct
68 Correct 191 ms 80464 KB Output is correct
69 Correct 224 ms 85216 KB Output is correct
70 Correct 197 ms 78312 KB Output is correct