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답안 #849175

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
849175 2023-09-14T08:27:03 Z abcvuitunggio 경주 (Race) (IOI11_race) C++17
100 / 100
 315 ms 80208 KB 
#include "race.h"
#include <bits/stdc++.h>
using namespace std;
vector <pair <int, int>> ke[200001];
map <long long, long long> mp[200001];
long long k,len[200001],res=1e9,d[200001];
void dfs(int u, int p){
    int bigchild=-1,sz=0;
    for (auto [v,w]:ke[u])
        if (v!=p){
            d[v]=d[u]+1;
            len[v]=len[u]+w;
            dfs(v,u);
            if (mp[v].size()>sz){
                sz=mp[v].size();
                bigchild=v;
            }
        }
    if (bigchild!=-1)
        swap(mp[u],mp[bigchild]);
    for (auto [v,w]:ke[u]){
        if (v!=bigchild){
            for (auto [l,h]:mp[v])
                if (mp[u].count(k+len[u]*2-l))
                    res=min(res,mp[u][k+len[u]*2-l]+h-d[u]*2);
            for (auto [l,h]:mp[v])
                if (!mp[u].count(l))
                    mp[u][l]=h;
                else
                    mp[u][l]=min(mp[u][l],h);
            mp[v].clear();
        }
    }
    if (mp[u].count(k+len[u]))
        res=min(res,mp[u][k+len[u]]-d[u]);
    if (!mp[u].count(len[u]))
        mp[u][len[u]]=d[u];
    else
        mp[u][len[u]]=min(mp[u][len[u]],d[u]);
}
int best_path(int N, int K, int H[][2], int L[]){
    k=K;
    for (int i=0;i<N-1;i++){
        ke[H[i][0]].push_back({H[i][1],L[i]});
        ke[H[i][1]].push_back({H[i][0],L[i]});
    }
    dfs(0,0);
    return (res>N?-1:res);
}

Compilation message

race.cpp: In function 'void dfs(int, int)':
race.cpp:14:29: warning: comparison of integer expressions of different signedness: 'std::map<long long int, long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   14 |             if (mp[v].size()>sz){
      |                 ~~~~~~~~~~~~^~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19288 KB Output is correct
2 Correct 3 ms 19288 KB Output is correct
3 Correct 4 ms 19288 KB Output is correct
4 Correct 4 ms 19032 KB Output is correct
5 Correct 4 ms 19288 KB Output is correct
6 Correct 4 ms 19288 KB Output is correct
7 Correct 4 ms 19288 KB Output is correct
8 Correct 4 ms 19288 KB Output is correct
9 Correct 4 ms 19288 KB Output is correct
10 Correct 4 ms 19288 KB Output is correct
11 Correct 4 ms 19288 KB Output is correct
12 Correct 4 ms 19552 KB Output is correct
13 Correct 3 ms 19288 KB Output is correct
14 Correct 4 ms 19288 KB Output is correct
15 Correct 3 ms 19288 KB Output is correct
16 Correct 4 ms 19292 KB Output is correct
17 Correct 4 ms 19288 KB Output is correct
18 Correct 4 ms 19288 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19288 KB Output is correct
2 Correct 3 ms 19288 KB Output is correct
3 Correct 4 ms 19288 KB Output is correct
4 Correct 4 ms 19032 KB Output is correct
5 Correct 4 ms 19288 KB Output is correct
6 Correct 4 ms 19288 KB Output is correct
7 Correct 4 ms 19288 KB Output is correct
8 Correct 4 ms 19288 KB Output is correct
9 Correct 4 ms 19288 KB Output is correct
10 Correct 4 ms 19288 KB Output is correct
11 Correct 4 ms 19288 KB Output is correct
12 Correct 4 ms 19552 KB Output is correct
13 Correct 3 ms 19288 KB Output is correct
14 Correct 4 ms 19288 KB Output is correct
15 Correct 3 ms 19288 KB Output is correct
16 Correct 4 ms 19292 KB Output is correct
17 Correct 4 ms 19288 KB Output is correct
18 Correct 4 ms 19288 KB Output is correct
19 Correct 3 ms 19032 KB Output is correct
20 Correct 4 ms 19032 KB Output is correct
21 Correct 5 ms 19288 KB Output is correct
22 Correct 4 ms 19288 KB Output is correct
23 Correct 5 ms 19276 KB Output is correct
24 Correct 4 ms 19288 KB Output is correct
25 Correct 4 ms 19292 KB Output is correct
26 Correct 5 ms 19288 KB Output is correct
27 Correct 4 ms 19288 KB Output is correct
28 Correct 4 ms 19292 KB Output is correct
29 Correct 5 ms 19288 KB Output is correct
30 Correct 4 ms 19288 KB Output is correct
31 Correct 4 ms 19288 KB Output is correct
32 Correct 4 ms 19288 KB Output is correct
33 Correct 4 ms 19288 KB Output is correct
34 Correct 4 ms 19288 KB Output is correct
35 Correct 4 ms 19288 KB Output is correct
36 Correct 4 ms 19292 KB Output is correct
37 Correct 4 ms 19288 KB Output is correct
38 Correct 4 ms 19292 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19288 KB Output is correct
2 Correct 3 ms 19288 KB Output is correct
3 Correct 4 ms 19288 KB Output is correct
4 Correct 4 ms 19032 KB Output is correct
5 Correct 4 ms 19288 KB Output is correct
6 Correct 4 ms 19288 KB Output is correct
7 Correct 4 ms 19288 KB Output is correct
8 Correct 4 ms 19288 KB Output is correct
9 Correct 4 ms 19288 KB Output is correct
10 Correct 4 ms 19288 KB Output is correct
11 Correct 4 ms 19288 KB Output is correct
12 Correct 4 ms 19552 KB Output is correct
13 Correct 3 ms 19288 KB Output is correct
14 Correct 4 ms 19288 KB Output is correct
15 Correct 3 ms 19288 KB Output is correct
16 Correct 4 ms 19292 KB Output is correct
17 Correct 4 ms 19288 KB Output is correct
18 Correct 4 ms 19288 KB Output is correct
19 Correct 75 ms 26344 KB Output is correct
20 Correct 64 ms 26200 KB Output is correct
21 Correct 64 ms 26192 KB Output is correct
22 Correct 78 ms 26192 KB Output is correct
23 Correct 95 ms 26704 KB Output is correct
24 Correct 79 ms 26448 KB Output is correct
25 Correct 83 ms 36176 KB Output is correct
26 Correct 45 ms 44496 KB Output is correct
27 Correct 125 ms 37848 KB Output is correct
28 Correct 204 ms 80208 KB Output is correct
29 Correct 194 ms 77904 KB Output is correct
30 Correct 126 ms 37836 KB Output is correct
31 Correct 141 ms 37712 KB Output is correct
32 Correct 152 ms 37812 KB Output is correct
33 Correct 157 ms 31092 KB Output is correct
34 Correct 240 ms 43672 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19288 KB Output is correct
2 Correct 3 ms 19288 KB Output is correct
3 Correct 4 ms 19288 KB Output is correct
4 Correct 4 ms 19032 KB Output is correct
5 Correct 4 ms 19288 KB Output is correct
6 Correct 4 ms 19288 KB Output is correct
7 Correct 4 ms 19288 KB Output is correct
8 Correct 4 ms 19288 KB Output is correct
9 Correct 4 ms 19288 KB Output is correct
10 Correct 4 ms 19288 KB Output is correct
11 Correct 4 ms 19288 KB Output is correct
12 Correct 4 ms 19552 KB Output is correct
13 Correct 3 ms 19288 KB Output is correct
14 Correct 4 ms 19288 KB Output is correct
15 Correct 3 ms 19288 KB Output is correct
16 Correct 4 ms 19292 KB Output is correct
17 Correct 4 ms 19288 KB Output is correct
18 Correct 4 ms 19288 KB Output is correct
19 Correct 3 ms 19032 KB Output is correct
20 Correct 4 ms 19032 KB Output is correct
21 Correct 5 ms 19288 KB Output is correct
22 Correct 4 ms 19288 KB Output is correct
23 Correct 5 ms 19276 KB Output is correct
24 Correct 4 ms 19288 KB Output is correct
25 Correct 4 ms 19292 KB Output is correct
26 Correct 5 ms 19288 KB Output is correct
27 Correct 4 ms 19288 KB Output is correct
28 Correct 4 ms 19292 KB Output is correct
29 Correct 5 ms 19288 KB Output is correct
30 Correct 4 ms 19288 KB Output is correct
31 Correct 4 ms 19288 KB Output is correct
32 Correct 4 ms 19288 KB Output is correct
33 Correct 4 ms 19288 KB Output is correct
34 Correct 4 ms 19288 KB Output is correct
35 Correct 4 ms 19288 KB Output is correct
36 Correct 4 ms 19292 KB Output is correct
37 Correct 4 ms 19288 KB Output is correct
38 Correct 4 ms 19292 KB Output is correct
39 Correct 75 ms 26344 KB Output is correct
40 Correct 64 ms 26200 KB Output is correct
41 Correct 64 ms 26192 KB Output is correct
42 Correct 78 ms 26192 KB Output is correct
43 Correct 95 ms 26704 KB Output is correct
44 Correct 79 ms 26448 KB Output is correct
45 Correct 83 ms 36176 KB Output is correct
46 Correct 45 ms 44496 KB Output is correct
47 Correct 125 ms 37848 KB Output is correct
48 Correct 204 ms 80208 KB Output is correct
49 Correct 194 ms 77904 KB Output is correct
50 Correct 126 ms 37836 KB Output is correct
51 Correct 141 ms 37712 KB Output is correct
52 Correct 152 ms 37812 KB Output is correct
53 Correct 157 ms 31092 KB Output is correct
54 Correct 240 ms 43672 KB Output is correct
55 Correct 13 ms 20056 KB Output is correct
56 Correct 8 ms 19544 KB Output is correct
57 Correct 42 ms 27220 KB Output is correct
58 Correct 46 ms 33476 KB Output is correct
59 Correct 71 ms 51280 KB Output is correct
60 Correct 193 ms 79696 KB Output is correct
61 Correct 171 ms 40596 KB Output is correct
62 Correct 132 ms 38596 KB Output is correct
63 Correct 161 ms 38700 KB Output is correct
64 Correct 315 ms 40528 KB Output is correct
65 Correct 305 ms 45904 KB Output is correct
66 Correct 216 ms 75180 KB Output is correct
67 Correct 133 ms 45244 KB Output is correct
68 Correct 248 ms 44376 KB Output is correct
69 Correct 246 ms 44952 KB Output is correct
70 Correct 218 ms 43416 KB Output is correct