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답안 #486783

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
486783 2021-11-12T19:11:00 Z status_coding 경주 (Race) (IOI11_race) C++14
100 / 100
 382 ms 89296 KB 
#include <bits/stdc++.h>

using namespace std;

struct mulS
{
    map<int, int> m;
    int dif=0;

    mulS(){};
    mulS(int d)
    {
        m[0]=d;
    }
};
struct nodS
{
    int d;
    mulS *mul;
    vector<pair<int, int>> v;
};

int n,k,ans;
nodS nod[200005];

int getVal(mulS *a, int val)
{
    val -= a->dif;

    if(a->m.find(val) == a->m.end())
        return -1;

    return a->m[val];
}
void mergeMul(int d, mulS *&a, mulS *& b)
{
    if(a->m.size() < b->m.size())
        swap(a, b);

    for(auto it : b->m)
    {
        int trVal = it.first + b->dif;

        int oD = getVal(a, k - trVal);
        if(oD != -1)
            ans = min(ans, it.second + oD - 2*d);
    }

    for(auto it : b->m)
    {
        int nVal = it.first + b->dif - a->dif;

        if(a->m.find(nVal) == a->m.end() || a->m[nVal] > it.second)
            a->m[nVal] = it.second;
    }
}

void dfs(int p, int par)
{
    nod[p].d = nod[par].d+1;
    nod[p].mul = new mulS(nod[p].d);

    for(auto it : nod[p].v)
    {
        if(it.first == par)
            continue;

        dfs(it.first, p);
        nod[it.first].mul->dif += it.second;

        mergeMul(nod[p].d, nod[p].mul, nod[it.first].mul);
    }

    /*
    if(p >= 9)
    {
        cout<<p<<":\n";
        for(auto it : nod[p].mul->m)
            cout<<it.first + nod[p].mul->dif<<' '<<it.second<<'\n';
        cout<<'\n';
    }
    */
}

int best_path(int N, int K, int h[][2], int l[])
{
    n=N;
    k=K;

    for(int i=0;i<n-1;i++)
    {
        int x = h[i][0] + 1;
        int y = h[i][1] + 1;

        nod[x].v.push_back({y, l[i]});
        nod[y].v.push_back({x, l[i]});
    }

    ans=1e9;
    dfs(1, 0);

    if(ans == 1e9)
        return -1;

    return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8140 KB Output is correct
2 Correct 4 ms 8140 KB Output is correct
3 Correct 4 ms 8140 KB Output is correct
4 Correct 5 ms 8124 KB Output is correct
5 Correct 4 ms 8140 KB Output is correct
6 Correct 3 ms 8140 KB Output is correct
7 Correct 4 ms 8140 KB Output is correct
8 Correct 4 ms 8132 KB Output is correct
9 Correct 4 ms 8140 KB Output is correct
10 Correct 4 ms 8140 KB Output is correct
11 Correct 5 ms 8140 KB Output is correct
12 Correct 4 ms 8140 KB Output is correct
13 Correct 4 ms 8140 KB Output is correct
14 Correct 4 ms 8140 KB Output is correct
15 Correct 4 ms 8140 KB Output is correct
16 Correct 4 ms 8140 KB Output is correct
17 Correct 4 ms 8092 KB Output is correct
18 Correct 5 ms 8140 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8140 KB Output is correct
2 Correct 4 ms 8140 KB Output is correct
3 Correct 4 ms 8140 KB Output is correct
4 Correct 5 ms 8124 KB Output is correct
5 Correct 4 ms 8140 KB Output is correct
6 Correct 3 ms 8140 KB Output is correct
7 Correct 4 ms 8140 KB Output is correct
8 Correct 4 ms 8132 KB Output is correct
9 Correct 4 ms 8140 KB Output is correct
10 Correct 4 ms 8140 KB Output is correct
11 Correct 5 ms 8140 KB Output is correct
12 Correct 4 ms 8140 KB Output is correct
13 Correct 4 ms 8140 KB Output is correct
14 Correct 4 ms 8140 KB Output is correct
15 Correct 4 ms 8140 KB Output is correct
16 Correct 4 ms 8140 KB Output is correct
17 Correct 4 ms 8092 KB Output is correct
18 Correct 5 ms 8140 KB Output is correct
19 Correct 5 ms 8036 KB Output is correct
20 Correct 4 ms 8140 KB Output is correct
21 Correct 6 ms 8396 KB Output is correct
22 Correct 5 ms 8396 KB Output is correct
23 Correct 4 ms 8396 KB Output is correct
24 Correct 5 ms 8396 KB Output is correct
25 Correct 5 ms 8392 KB Output is correct
26 Correct 5 ms 8396 KB Output is correct
27 Correct 6 ms 8264 KB Output is correct
28 Correct 5 ms 8396 KB Output is correct
29 Correct 5 ms 8396 KB Output is correct
30 Correct 5 ms 8376 KB Output is correct
31 Correct 6 ms 8396 KB Output is correct
32 Correct 5 ms 8396 KB Output is correct
33 Correct 5 ms 8396 KB Output is correct
34 Correct 4 ms 8268 KB Output is correct
35 Correct 4 ms 8268 KB Output is correct
36 Correct 4 ms 8268 KB Output is correct
37 Correct 4 ms 8364 KB Output is correct
38 Correct 5 ms 8392 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8140 KB Output is correct
2 Correct 4 ms 8140 KB Output is correct
3 Correct 4 ms 8140 KB Output is correct
4 Correct 5 ms 8124 KB Output is correct
5 Correct 4 ms 8140 KB Output is correct
6 Correct 3 ms 8140 KB Output is correct
7 Correct 4 ms 8140 KB Output is correct
8 Correct 4 ms 8132 KB Output is correct
9 Correct 4 ms 8140 KB Output is correct
10 Correct 4 ms 8140 KB Output is correct
11 Correct 5 ms 8140 KB Output is correct
12 Correct 4 ms 8140 KB Output is correct
13 Correct 4 ms 8140 KB Output is correct
14 Correct 4 ms 8140 KB Output is correct
15 Correct 4 ms 8140 KB Output is correct
16 Correct 4 ms 8140 KB Output is correct
17 Correct 4 ms 8092 KB Output is correct
18 Correct 5 ms 8140 KB Output is correct
19 Correct 92 ms 32180 KB Output is correct
20 Correct 94 ms 32184 KB Output is correct
21 Correct 90 ms 31988 KB Output is correct
22 Correct 95 ms 31808 KB Output is correct
23 Correct 122 ms 41412 KB Output is correct
24 Correct 95 ms 34312 KB Output is correct
25 Correct 80 ms 30352 KB Output is correct
26 Correct 58 ms 34080 KB Output is correct
27 Correct 167 ms 47668 KB Output is correct
28 Correct 229 ms 69952 KB Output is correct
29 Correct 224 ms 69272 KB Output is correct
30 Correct 170 ms 47588 KB Output is correct
31 Correct 170 ms 47640 KB Output is correct
32 Correct 184 ms 47780 KB Output is correct
33 Correct 174 ms 50884 KB Output is correct
34 Correct 258 ms 75764 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8140 KB Output is correct
2 Correct 4 ms 8140 KB Output is correct
3 Correct 4 ms 8140 KB Output is correct
4 Correct 5 ms 8124 KB Output is correct
5 Correct 4 ms 8140 KB Output is correct
6 Correct 3 ms 8140 KB Output is correct
7 Correct 4 ms 8140 KB Output is correct
8 Correct 4 ms 8132 KB Output is correct
9 Correct 4 ms 8140 KB Output is correct
10 Correct 4 ms 8140 KB Output is correct
11 Correct 5 ms 8140 KB Output is correct
12 Correct 4 ms 8140 KB Output is correct
13 Correct 4 ms 8140 KB Output is correct
14 Correct 4 ms 8140 KB Output is correct
15 Correct 4 ms 8140 KB Output is correct
16 Correct 4 ms 8140 KB Output is correct
17 Correct 4 ms 8092 KB Output is correct
18 Correct 5 ms 8140 KB Output is correct
19 Correct 5 ms 8036 KB Output is correct
20 Correct 4 ms 8140 KB Output is correct
21 Correct 6 ms 8396 KB Output is correct
22 Correct 5 ms 8396 KB Output is correct
23 Correct 4 ms 8396 KB Output is correct
24 Correct 5 ms 8396 KB Output is correct
25 Correct 5 ms 8392 KB Output is correct
26 Correct 5 ms 8396 KB Output is correct
27 Correct 6 ms 8264 KB Output is correct
28 Correct 5 ms 8396 KB Output is correct
29 Correct 5 ms 8396 KB Output is correct
30 Correct 5 ms 8376 KB Output is correct
31 Correct 6 ms 8396 KB Output is correct
32 Correct 5 ms 8396 KB Output is correct
33 Correct 5 ms 8396 KB Output is correct
34 Correct 4 ms 8268 KB Output is correct
35 Correct 4 ms 8268 KB Output is correct
36 Correct 4 ms 8268 KB Output is correct
37 Correct 4 ms 8364 KB Output is correct
38 Correct 5 ms 8392 KB Output is correct
39 Correct 92 ms 32180 KB Output is correct
40 Correct 94 ms 32184 KB Output is correct
41 Correct 90 ms 31988 KB Output is correct
42 Correct 95 ms 31808 KB Output is correct
43 Correct 122 ms 41412 KB Output is correct
44 Correct 95 ms 34312 KB Output is correct
45 Correct 80 ms 30352 KB Output is correct
46 Correct 58 ms 34080 KB Output is correct
47 Correct 167 ms 47668 KB Output is correct
48 Correct 229 ms 69952 KB Output is correct
49 Correct 224 ms 69272 KB Output is correct
50 Correct 170 ms 47588 KB Output is correct
51 Correct 170 ms 47640 KB Output is correct
52 Correct 184 ms 47780 KB Output is correct
53 Correct 174 ms 50884 KB Output is correct
54 Correct 258 ms 75764 KB Output is correct
55 Correct 17 ms 11196 KB Output is correct
56 Correct 10 ms 10188 KB Output is correct
57 Correct 61 ms 30348 KB Output is correct
58 Correct 48 ms 25188 KB Output is correct
59 Correct 85 ms 38740 KB Output is correct
60 Correct 208 ms 69096 KB Output is correct
61 Correct 194 ms 50352 KB Output is correct
62 Correct 163 ms 47612 KB Output is correct
63 Correct 188 ms 47760 KB Output is correct
64 Correct 382 ms 89296 KB Output is correct
65 Correct 362 ms 87968 KB Output is correct
66 Correct 244 ms 67652 KB Output is correct
67 Correct 133 ms 43804 KB Output is correct
68 Correct 252 ms 60408 KB Output is correct
69 Correct 277 ms 64372 KB Output is correct
70 Correct 234 ms 58180 KB Output is correct