oj.uz

답안 #1086419

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1086419 2024-09-10T14:49:50 Z ehab_rafat 경주 (Race) (IOI11_race) C++17
100 / 100
 377 ms 104568 KB 
#include <bits/stdc++.h>
using namespace std;
#define fastio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define LSB(i) ((i) & (-i))
#define ll long long
const int dx[]{-1,1,0,0,-1,-1,1,1};
const int dy[]{0,0,1,-1,-1,1,-1,1};
const int MOD = 1e9+7;


const int N = 2e5+5;
std::vector<array<int,2>> G[N];
map<ll, ll> vec[N];
ll sum[N], dist[N], n, k, ans;

void dfs0(int u, int p, int s = 0, int d = 0){
    sum[u] = s;
    dist[u] = d;
    vec[u][s] = d;
    for(auto& nei : G[u]){
        int v = nei[0], w = nei[1];
        if(v==p) continue;
        dfs0(v, u, s+w, d+1);
    }
}

void dfs(int u, int p){
    ll target = k + 2*sum[u];
    for(auto& nei : G[u]){
        int v = nei[0];
        if(v==p) continue;
        dfs(v, u);
        if(vec[v].size() > vec[u].size()) swap(vec[u], vec[v]);
        for(auto& p : vec[v]){
            if(vec[u].count(target-p.first)){
                ans = min(ans, vec[u][target-p.first]+p.second-2*dist[u]);
            }
        }
        for(auto& p : vec[v]){
            if(!vec[u].count(p.first)) vec[u].insert(p);
            else vec[u][p.first] = min(vec[u][p.first], p.second);
        }
    }
}


int best_path(int _n, int _k, int edges[][2], int weights[]) {
    if (k == 1) { return 0; }
    n = _n;
    k = _k;
    ans = INT_MAX;
    for (int i = 0; i < n - 1; i++) {
        int u = edges[i][0];
        int v = edges[i][1];
        G[u].push_back({v, weights[i]});
        G[v].push_back({u, weights[i]});
    }
    dfs0(0, -1);
    dfs(0, -1);
    return ans == INT_MAX ? -1 : ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 14680 KB Output is correct
2 Correct 6 ms 14428 KB Output is correct
3 Correct 5 ms 14404 KB Output is correct
4 Correct 6 ms 14428 KB Output is correct
5 Correct 6 ms 14428 KB Output is correct
6 Correct 5 ms 14428 KB Output is correct
7 Correct 5 ms 14592 KB Output is correct
8 Correct 5 ms 14428 KB Output is correct
9 Correct 6 ms 14428 KB Output is correct
10 Correct 7 ms 14428 KB Output is correct
11 Correct 8 ms 14428 KB Output is correct
12 Correct 6 ms 14428 KB Output is correct
13 Correct 6 ms 14428 KB Output is correct
14 Correct 6 ms 14428 KB Output is correct
15 Correct 5 ms 14532 KB Output is correct
16 Correct 6 ms 14428 KB Output is correct
17 Correct 6 ms 14428 KB Output is correct
18 Correct 6 ms 14424 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 14680 KB Output is correct
2 Correct 6 ms 14428 KB Output is correct
3 Correct 5 ms 14404 KB Output is correct
4 Correct 6 ms 14428 KB Output is correct
5 Correct 6 ms 14428 KB Output is correct
6 Correct 5 ms 14428 KB Output is correct
7 Correct 5 ms 14592 KB Output is correct
8 Correct 5 ms 14428 KB Output is correct
9 Correct 6 ms 14428 KB Output is correct
10 Correct 7 ms 14428 KB Output is correct
11 Correct 8 ms 14428 KB Output is correct
12 Correct 6 ms 14428 KB Output is correct
13 Correct 6 ms 14428 KB Output is correct
14 Correct 6 ms 14428 KB Output is correct
15 Correct 5 ms 14532 KB Output is correct
16 Correct 6 ms 14428 KB Output is correct
17 Correct 6 ms 14428 KB Output is correct
18 Correct 6 ms 14424 KB Output is correct
19 Correct 7 ms 14424 KB Output is correct
20 Correct 6 ms 14428 KB Output is correct
21 Correct 6 ms 14684 KB Output is correct
22 Correct 7 ms 14684 KB Output is correct
23 Correct 7 ms 14684 KB Output is correct
24 Correct 7 ms 14780 KB Output is correct
25 Correct 7 ms 14680 KB Output is correct
26 Correct 7 ms 14684 KB Output is correct
27 Correct 6 ms 14684 KB Output is correct
28 Correct 7 ms 14684 KB Output is correct
29 Correct 7 ms 14684 KB Output is correct
30 Correct 6 ms 14684 KB Output is correct
31 Correct 6 ms 14684 KB Output is correct
32 Correct 6 ms 14696 KB Output is correct
33 Correct 7 ms 14684 KB Output is correct
34 Correct 6 ms 14684 KB Output is correct
35 Correct 6 ms 14684 KB Output is correct
36 Correct 6 ms 14684 KB Output is correct
37 Correct 7 ms 14684 KB Output is correct
38 Correct 6 ms 14684 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 14680 KB Output is correct
2 Correct 6 ms 14428 KB Output is correct
3 Correct 5 ms 14404 KB Output is correct
4 Correct 6 ms 14428 KB Output is correct
5 Correct 6 ms 14428 KB Output is correct
6 Correct 5 ms 14428 KB Output is correct
7 Correct 5 ms 14592 KB Output is correct
8 Correct 5 ms 14428 KB Output is correct
9 Correct 6 ms 14428 KB Output is correct
10 Correct 7 ms 14428 KB Output is correct
11 Correct 8 ms 14428 KB Output is correct
12 Correct 6 ms 14428 KB Output is correct
13 Correct 6 ms 14428 KB Output is correct
14 Correct 6 ms 14428 KB Output is correct
15 Correct 5 ms 14532 KB Output is correct
16 Correct 6 ms 14428 KB Output is correct
17 Correct 6 ms 14428 KB Output is correct
18 Correct 6 ms 14424 KB Output is correct
19 Correct 89 ms 37716 KB Output is correct
20 Correct 87 ms 37752 KB Output is correct
21 Correct 84 ms 37460 KB Output is correct
22 Correct 82 ms 37260 KB Output is correct
23 Correct 115 ms 49788 KB Output is correct
24 Correct 93 ms 40528 KB Output is correct
25 Correct 75 ms 35924 KB Output is correct
26 Correct 43 ms 41956 KB Output is correct
27 Correct 136 ms 49492 KB Output is correct
28 Correct 209 ms 82260 KB Output is correct
29 Correct 217 ms 81232 KB Output is correct
30 Correct 133 ms 49436 KB Output is correct
31 Correct 136 ms 49472 KB Output is correct
32 Correct 191 ms 49544 KB Output is correct
33 Correct 188 ms 54328 KB Output is correct
34 Correct 257 ms 87244 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 14680 KB Output is correct
2 Correct 6 ms 14428 KB Output is correct
3 Correct 5 ms 14404 KB Output is correct
4 Correct 6 ms 14428 KB Output is correct
5 Correct 6 ms 14428 KB Output is correct
6 Correct 5 ms 14428 KB Output is correct
7 Correct 5 ms 14592 KB Output is correct
8 Correct 5 ms 14428 KB Output is correct
9 Correct 6 ms 14428 KB Output is correct
10 Correct 7 ms 14428 KB Output is correct
11 Correct 8 ms 14428 KB Output is correct
12 Correct 6 ms 14428 KB Output is correct
13 Correct 6 ms 14428 KB Output is correct
14 Correct 6 ms 14428 KB Output is correct
15 Correct 5 ms 14532 KB Output is correct
16 Correct 6 ms 14428 KB Output is correct
17 Correct 6 ms 14428 KB Output is correct
18 Correct 6 ms 14424 KB Output is correct
19 Correct 7 ms 14424 KB Output is correct
20 Correct 6 ms 14428 KB Output is correct
21 Correct 6 ms 14684 KB Output is correct
22 Correct 7 ms 14684 KB Output is correct
23 Correct 7 ms 14684 KB Output is correct
24 Correct 7 ms 14780 KB Output is correct
25 Correct 7 ms 14680 KB Output is correct
26 Correct 7 ms 14684 KB Output is correct
27 Correct 6 ms 14684 KB Output is correct
28 Correct 7 ms 14684 KB Output is correct
29 Correct 7 ms 14684 KB Output is correct
30 Correct 6 ms 14684 KB Output is correct
31 Correct 6 ms 14684 KB Output is correct
32 Correct 6 ms 14696 KB Output is correct
33 Correct 7 ms 14684 KB Output is correct
34 Correct 6 ms 14684 KB Output is correct
35 Correct 6 ms 14684 KB Output is correct
36 Correct 6 ms 14684 KB Output is correct
37 Correct 7 ms 14684 KB Output is correct
38 Correct 6 ms 14684 KB Output is correct
39 Correct 89 ms 37716 KB Output is correct
40 Correct 87 ms 37752 KB Output is correct
41 Correct 84 ms 37460 KB Output is correct
42 Correct 82 ms 37260 KB Output is correct
43 Correct 115 ms 49788 KB Output is correct
44 Correct 93 ms 40528 KB Output is correct
45 Correct 75 ms 35924 KB Output is correct
46 Correct 43 ms 41956 KB Output is correct
47 Correct 136 ms 49492 KB Output is correct
48 Correct 209 ms 82260 KB Output is correct
49 Correct 217 ms 81232 KB Output is correct
50 Correct 133 ms 49436 KB Output is correct
51 Correct 136 ms 49472 KB Output is correct
52 Correct 191 ms 49544 KB Output is correct
53 Correct 188 ms 54328 KB Output is correct
54 Correct 257 ms 87244 KB Output is correct
55 Correct 16 ms 17756 KB Output is correct
56 Correct 12 ms 16476 KB Output is correct
57 Correct 49 ms 35056 KB Output is correct
58 Correct 38 ms 28496 KB Output is correct
59 Correct 72 ms 48212 KB Output is correct
60 Correct 217 ms 81488 KB Output is correct
61 Correct 177 ms 52892 KB Output is correct
62 Correct 163 ms 49488 KB Output is correct
63 Correct 190 ms 49544 KB Output is correct
64 Correct 377 ms 104568 KB Output is correct
65 Correct 359 ms 102892 KB Output is correct
66 Correct 252 ms 78676 KB Output is correct
67 Correct 138 ms 43968 KB Output is correct
68 Correct 277 ms 66572 KB Output is correct
69 Correct 311 ms 71504 KB Output is correct
70 Correct 300 ms 64340 KB Output is correct