oj.uz

답안 #970299

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
970299 2024-04-26T10:31:10 Z tset 경주 (Race) (IOI11_race) C++14
100 / 100
 338 ms 41932 KB 
#include "race.h"
#include<bits/stdc++.h>

using namespace std;

const int INF = 1e9+42;

#define pii pair<int, int>

int nbNodes, requestedSum;
vector<vector<pii>> voisinDe;
vector<int> profSubtree;
vector<bool> interdit;

int lenSubTree;

int dfs(int nde, int ansc)
{
    int ans = 1;
    for(pii iV : voisinDe[nde])
    {
        if(!interdit[iV.first] && iV.first != ansc)
        {
            ans += dfs(iV.first, nde);
        }
    }
    profSubtree[nde] = ans;
    return ans;
}
int getCentroid(int nde, int ansc)
{
    for(pii iV : voisinDe[nde])
    {
        if(!interdit[iV.first] && iV.first!= ansc)
        {
            if(profSubtree[iV.first] > (lenSubTree)/2)
            {
                return getCentroid(iV.first, nde);
            }
        }
    }
    return nde;
}

vector<pii> minDistToLen;
vector<pii> toUpd;//sum, len;

int timer;

int findLenghts(int nde, int ansc, int sum, int len)
{
    //printf("[%d]\n", nde);
    int ans = INF;
    if(sum > requestedSum)
        return INF;
    if(sum == requestedSum)
        return len;
    toUpd.push_back({sum, len});

    int sumRemain = requestedSum - sum;
    if(minDistToLen[sumRemain].first == timer)
        ans = len + minDistToLen[sumRemain].second;
    for(pii iV : voisinDe[nde])
    {
        if(!interdit[iV.first] && iV.first != ansc)
        {
            ans = min(ans, findLenghts(iV.first, nde, sum + iV.second, len+1));
        }
    }
    return ans;
}

int findMinPath(int nde)
{
    //printf("[centroid : %d]", nde);
    int ans = INF;
    for(pii iV : voisinDe[nde])
    {
        if(!interdit[iV.first])
        {
            toUpd.clear();
            ans = min(findLenghts(iV.first, nde, iV.second, 1), ans);
            for(pii updAct : toUpd)
            {
                minDistToLen[updAct.first] = min(minDistToLen[updAct.first], {timer ,updAct.second});
            }
        }

    }
    return ans;
} 

int best_path(int N, int K, int H[][2], int L[])
{
    nbNodes = N;
    requestedSum = K;
    profSubtree.resize(nbNodes);
    timer = 2*nbNodes;
    interdit.assign(nbNodes,  false);
    voisinDe.resize(nbNodes);
    minDistToLen.assign(1000042, {INF, INF});
    for(int i =0; i< nbNodes-1; i++)
    {
        voisinDe[H[i][0]].push_back({H[i][1], L[i]});
        voisinDe[H[i][1]].push_back({H[i][0], L[i]});
    }
    deque<int> process;
    lenSubTree = dfs(0, -1);
    int centroid = getCentroid(0, -1);
    process.push_back(centroid);
    int ansMin = INF;
    while (!process.empty())
    {
        int ndeToProcess = process.front();
        process.pop_front();
        interdit[ndeToProcess] = true;
        int ansAct=findMinPath(ndeToProcess);
        ansMin = min(ansMin, ansAct);
        timer--;
        for(pii iV : voisinDe[ndeToProcess])
        {
            if(!interdit[iV.first])
            {
                
                lenSubTree = dfs(iV.first, -1);
                centroid = getCentroid(iV.first, -1);
                process.push_back(centroid);
            }
        }
    }
    if(ansMin == INF)
        return -1;
    return ansMin;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 10332 KB Output is correct
2 Correct 3 ms 10332 KB Output is correct
3 Correct 2 ms 10332 KB Output is correct
4 Correct 3 ms 10332 KB Output is correct
5 Correct 2 ms 10332 KB Output is correct
6 Correct 2 ms 10332 KB Output is correct
7 Correct 2 ms 10168 KB Output is correct
8 Correct 2 ms 10332 KB Output is correct
9 Correct 3 ms 10328 KB Output is correct
10 Correct 3 ms 10328 KB Output is correct
11 Correct 3 ms 10104 KB Output is correct
12 Correct 3 ms 10332 KB Output is correct
13 Correct 2 ms 10332 KB Output is correct
14 Correct 3 ms 10332 KB Output is correct
15 Correct 2 ms 10332 KB Output is correct
16 Correct 3 ms 10332 KB Output is correct
17 Correct 2 ms 10332 KB Output is correct
18 Correct 2 ms 10328 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 10332 KB Output is correct
2 Correct 3 ms 10332 KB Output is correct
3 Correct 2 ms 10332 KB Output is correct
4 Correct 3 ms 10332 KB Output is correct
5 Correct 2 ms 10332 KB Output is correct
6 Correct 2 ms 10332 KB Output is correct
7 Correct 2 ms 10168 KB Output is correct
8 Correct 2 ms 10332 KB Output is correct
9 Correct 3 ms 10328 KB Output is correct
10 Correct 3 ms 10328 KB Output is correct
11 Correct 3 ms 10104 KB Output is correct
12 Correct 3 ms 10332 KB Output is correct
13 Correct 2 ms 10332 KB Output is correct
14 Correct 3 ms 10332 KB Output is correct
15 Correct 2 ms 10332 KB Output is correct
16 Correct 3 ms 10332 KB Output is correct
17 Correct 2 ms 10332 KB Output is correct
18 Correct 2 ms 10328 KB Output is correct
19 Correct 4 ms 10328 KB Output is correct
20 Correct 3 ms 10332 KB Output is correct
21 Correct 3 ms 10164 KB Output is correct
22 Correct 3 ms 10332 KB Output is correct
23 Correct 4 ms 10332 KB Output is correct
24 Correct 3 ms 10280 KB Output is correct
25 Correct 3 ms 10328 KB Output is correct
26 Correct 3 ms 10332 KB Output is correct
27 Correct 3 ms 10328 KB Output is correct
28 Correct 3 ms 10332 KB Output is correct
29 Correct 3 ms 10332 KB Output is correct
30 Correct 3 ms 10328 KB Output is correct
31 Correct 4 ms 10332 KB Output is correct
32 Correct 3 ms 10332 KB Output is correct
33 Correct 3 ms 10332 KB Output is correct
34 Correct 3 ms 10332 KB Output is correct
35 Correct 3 ms 10332 KB Output is correct
36 Correct 3 ms 10332 KB Output is correct
37 Correct 3 ms 10292 KB Output is correct
38 Correct 3 ms 10332 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 10332 KB Output is correct
2 Correct 3 ms 10332 KB Output is correct
3 Correct 2 ms 10332 KB Output is correct
4 Correct 3 ms 10332 KB Output is correct
5 Correct 2 ms 10332 KB Output is correct
6 Correct 2 ms 10332 KB Output is correct
7 Correct 2 ms 10168 KB Output is correct
8 Correct 2 ms 10332 KB Output is correct
9 Correct 3 ms 10328 KB Output is correct
10 Correct 3 ms 10328 KB Output is correct
11 Correct 3 ms 10104 KB Output is correct
12 Correct 3 ms 10332 KB Output is correct
13 Correct 2 ms 10332 KB Output is correct
14 Correct 3 ms 10332 KB Output is correct
15 Correct 2 ms 10332 KB Output is correct
16 Correct 3 ms 10332 KB Output is correct
17 Correct 2 ms 10332 KB Output is correct
18 Correct 2 ms 10328 KB Output is correct
19 Correct 93 ms 19116 KB Output is correct
20 Correct 83 ms 18860 KB Output is correct
21 Correct 105 ms 19304 KB Output is correct
22 Correct 81 ms 19296 KB Output is correct
23 Correct 69 ms 19284 KB Output is correct
24 Correct 41 ms 19288 KB Output is correct
25 Correct 87 ms 22540 KB Output is correct
26 Correct 77 ms 27024 KB Output is correct
27 Correct 140 ms 25680 KB Output is correct
28 Correct 186 ms 40020 KB Output is correct
29 Correct 206 ms 38852 KB Output is correct
30 Correct 127 ms 25820 KB Output is correct
31 Correct 116 ms 25688 KB Output is correct
32 Correct 189 ms 25680 KB Output is correct
33 Correct 151 ms 24656 KB Output is correct
34 Correct 176 ms 24656 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 10332 KB Output is correct
2 Correct 3 ms 10332 KB Output is correct
3 Correct 2 ms 10332 KB Output is correct
4 Correct 3 ms 10332 KB Output is correct
5 Correct 2 ms 10332 KB Output is correct
6 Correct 2 ms 10332 KB Output is correct
7 Correct 2 ms 10168 KB Output is correct
8 Correct 2 ms 10332 KB Output is correct
9 Correct 3 ms 10328 KB Output is correct
10 Correct 3 ms 10328 KB Output is correct
11 Correct 3 ms 10104 KB Output is correct
12 Correct 3 ms 10332 KB Output is correct
13 Correct 2 ms 10332 KB Output is correct
14 Correct 3 ms 10332 KB Output is correct
15 Correct 2 ms 10332 KB Output is correct
16 Correct 3 ms 10332 KB Output is correct
17 Correct 2 ms 10332 KB Output is correct
18 Correct 2 ms 10328 KB Output is correct
19 Correct 4 ms 10328 KB Output is correct
20 Correct 3 ms 10332 KB Output is correct
21 Correct 3 ms 10164 KB Output is correct
22 Correct 3 ms 10332 KB Output is correct
23 Correct 4 ms 10332 KB Output is correct
24 Correct 3 ms 10280 KB Output is correct
25 Correct 3 ms 10328 KB Output is correct
26 Correct 3 ms 10332 KB Output is correct
27 Correct 3 ms 10328 KB Output is correct
28 Correct 3 ms 10332 KB Output is correct
29 Correct 3 ms 10332 KB Output is correct
30 Correct 3 ms 10328 KB Output is correct
31 Correct 4 ms 10332 KB Output is correct
32 Correct 3 ms 10332 KB Output is correct
33 Correct 3 ms 10332 KB Output is correct
34 Correct 3 ms 10332 KB Output is correct
35 Correct 3 ms 10332 KB Output is correct
36 Correct 3 ms 10332 KB Output is correct
37 Correct 3 ms 10292 KB Output is correct
38 Correct 3 ms 10332 KB Output is correct
39 Correct 93 ms 19116 KB Output is correct
40 Correct 83 ms 18860 KB Output is correct
41 Correct 105 ms 19304 KB Output is correct
42 Correct 81 ms 19296 KB Output is correct
43 Correct 69 ms 19284 KB Output is correct
44 Correct 41 ms 19288 KB Output is correct
45 Correct 87 ms 22540 KB Output is correct
46 Correct 77 ms 27024 KB Output is correct
47 Correct 140 ms 25680 KB Output is correct
48 Correct 186 ms 40020 KB Output is correct
49 Correct 206 ms 38852 KB Output is correct
50 Correct 127 ms 25820 KB Output is correct
51 Correct 116 ms 25688 KB Output is correct
52 Correct 189 ms 25680 KB Output is correct
53 Correct 151 ms 24656 KB Output is correct
54 Correct 176 ms 24656 KB Output is correct
55 Correct 9 ms 10844 KB Output is correct
56 Correct 9 ms 11100 KB Output is correct
57 Correct 58 ms 19672 KB Output is correct
58 Correct 36 ms 19880 KB Output is correct
59 Correct 76 ms 27748 KB Output is correct
60 Correct 279 ms 41932 KB Output is correct
61 Correct 147 ms 27428 KB Output is correct
62 Correct 129 ms 27472 KB Output is correct
63 Correct 188 ms 27452 KB Output is correct
64 Correct 338 ms 27316 KB Output is correct
65 Correct 164 ms 28244 KB Output is correct
66 Correct 265 ms 36568 KB Output is correct
67 Correct 73 ms 29376 KB Output is correct
68 Correct 186 ms 28240 KB Output is correct
69 Correct 197 ms 26448 KB Output is correct
70 Correct 159 ms 28244 KB Output is correct