oj.uz

답안 #799026

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
799026 2023-07-31T08:48:37 Z Blagoj 경주 (Race) (IOI11_race) C++17
100 / 100
 316 ms 38980 KB 
#include <bits/stdc++.h>
#include "race.h"
 
using namespace std;
 
#define endl '\n'
#define ll long long
#define all(x) x.begin(), x.end()
 
vector<pair<int, int>> g[200005];
bool processed[200005];
ll sz[200005];
 
int getSize(int cur, int par = -1) {
    sz[cur] = 1;
    for (auto next : g[cur]) {
        if (next.first != par && !processed[next.first]) sz[cur] += getSize(next.first, cur);
    }
    return sz[cur];
}
 
int getCentroid(int cur, int des, int par = -1) {
    for (auto next : g[cur]) {
        if (next.first != par && !processed[next.first] && sz[next.first] > des / 2) return getCentroid(next.first, des, cur);
    }
    return cur;
}
 
ll ans = 10e7, k, depths[1000005];
vector<int> v;
 
void solve(int cur, int par, ll depth, ll sum, int t) {
    if (sum > k || depth >= ans) return;
    if (t == 0) ans = min(ans, depth + depths[k - sum]);
    if (t == 1) {
        depths[sum] = min(depths[sum], depth);
        v.push_back(sum);
    }
    for (auto next : g[cur]) {
        if (next.first != par && !processed[next.first]) {
            solve(next.first, cur, depth + 1, sum + next.second, t);
        }
    }
}
 
void decompose(int cur = 0) {
    int centroid = getCentroid(cur, getSize(cur));
    processed[centroid] = 1;
    for (auto x : v) depths[x] = 10e7;
    v.clear();
    depths[0] = 0;
    for (auto next : g[centroid]) {
        if (!processed[next.first]) {
            solve(next.first, -1, 1, next.second, 0);
            solve(next.first, -1, 1, next.second, 1);
        }
    }
    for (auto next : g[centroid]) {
        if (!processed[next.first]) decompose(next.first);
    }
}
 
int best_path(int N, int K, int H[][2], int L[]) {
    k = K;
    for (int i = 0; i <= k; i++) depths[i] = 10e7;
    ans = N;
    for (int i = 0; i < N - 1; i++) {
        g[H[i][0]].push_back({H[i][1], L[i]});
        g[H[i][1]].push_back({H[i][0], L[i]});
    } 
    decompose();
    if (ans == N) return -1;
    else return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5016 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5008 KB Output is correct
10 Correct 2 ms 5016 KB Output is correct
11 Correct 2 ms 5016 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 2 ms 5012 KB Output is correct
16 Correct 3 ms 5012 KB Output is correct
17 Correct 3 ms 5016 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5016 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5008 KB Output is correct
10 Correct 2 ms 5016 KB Output is correct
11 Correct 2 ms 5016 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 2 ms 5012 KB Output is correct
16 Correct 3 ms 5012 KB Output is correct
17 Correct 3 ms 5016 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 5012 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 4 ms 5024 KB Output is correct
22 Correct 6 ms 12244 KB Output is correct
23 Correct 6 ms 10964 KB Output is correct
24 Correct 7 ms 11752 KB Output is correct
25 Correct 8 ms 11604 KB Output is correct
26 Correct 5 ms 7716 KB Output is correct
27 Correct 6 ms 11348 KB Output is correct
28 Correct 6 ms 6740 KB Output is correct
29 Correct 4 ms 7636 KB Output is correct
30 Correct 4 ms 7892 KB Output is correct
31 Correct 5 ms 10148 KB Output is correct
32 Correct 5 ms 10656 KB Output is correct
33 Correct 6 ms 11220 KB Output is correct
34 Correct 5 ms 9628 KB Output is correct
35 Correct 6 ms 11348 KB Output is correct
36 Correct 8 ms 12372 KB Output is correct
37 Correct 6 ms 11220 KB Output is correct
38 Correct 5 ms 9044 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5016 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5008 KB Output is correct
10 Correct 2 ms 5016 KB Output is correct
11 Correct 2 ms 5016 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 2 ms 5012 KB Output is correct
16 Correct 3 ms 5012 KB Output is correct
17 Correct 3 ms 5016 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 79 ms 11976 KB Output is correct
20 Correct 69 ms 12088 KB Output is correct
21 Correct 88 ms 12160 KB Output is correct
22 Correct 70 ms 12388 KB Output is correct
23 Correct 46 ms 12360 KB Output is correct
24 Correct 37 ms 12236 KB Output is correct
25 Correct 105 ms 14764 KB Output is correct
26 Correct 74 ms 18388 KB Output is correct
27 Correct 111 ms 19588 KB Output is correct
28 Correct 209 ms 30920 KB Output is correct
29 Correct 162 ms 29996 KB Output is correct
30 Correct 118 ms 19532 KB Output is correct
31 Correct 113 ms 19608 KB Output is correct
32 Correct 178 ms 19692 KB Output is correct
33 Correct 135 ms 18480 KB Output is correct
34 Correct 120 ms 19268 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5016 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5008 KB Output is correct
10 Correct 2 ms 5016 KB Output is correct
11 Correct 2 ms 5016 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 2 ms 5012 KB Output is correct
16 Correct 3 ms 5012 KB Output is correct
17 Correct 3 ms 5016 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 5012 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 4 ms 5024 KB Output is correct
22 Correct 6 ms 12244 KB Output is correct
23 Correct 6 ms 10964 KB Output is correct
24 Correct 7 ms 11752 KB Output is correct
25 Correct 8 ms 11604 KB Output is correct
26 Correct 5 ms 7716 KB Output is correct
27 Correct 6 ms 11348 KB Output is correct
28 Correct 6 ms 6740 KB Output is correct
29 Correct 4 ms 7636 KB Output is correct
30 Correct 4 ms 7892 KB Output is correct
31 Correct 5 ms 10148 KB Output is correct
32 Correct 5 ms 10656 KB Output is correct
33 Correct 6 ms 11220 KB Output is correct
34 Correct 5 ms 9628 KB Output is correct
35 Correct 6 ms 11348 KB Output is correct
36 Correct 8 ms 12372 KB Output is correct
37 Correct 6 ms 11220 KB Output is correct
38 Correct 5 ms 9044 KB Output is correct
39 Correct 79 ms 11976 KB Output is correct
40 Correct 69 ms 12088 KB Output is correct
41 Correct 88 ms 12160 KB Output is correct
42 Correct 70 ms 12388 KB Output is correct
43 Correct 46 ms 12360 KB Output is correct
44 Correct 37 ms 12236 KB Output is correct
45 Correct 105 ms 14764 KB Output is correct
46 Correct 74 ms 18388 KB Output is correct
47 Correct 111 ms 19588 KB Output is correct
48 Correct 209 ms 30920 KB Output is correct
49 Correct 162 ms 29996 KB Output is correct
50 Correct 118 ms 19532 KB Output is correct
51 Correct 113 ms 19608 KB Output is correct
52 Correct 178 ms 19692 KB Output is correct
53 Correct 135 ms 18480 KB Output is correct
54 Correct 120 ms 19268 KB Output is correct
55 Correct 8 ms 5792 KB Output is correct
56 Correct 9 ms 5716 KB Output is correct
57 Correct 56 ms 12780 KB Output is correct
58 Correct 28 ms 12948 KB Output is correct
59 Correct 71 ms 19732 KB Output is correct
60 Correct 316 ms 38980 KB Output is correct
61 Correct 110 ms 19968 KB Output is correct
62 Correct 122 ms 28364 KB Output is correct
63 Correct 150 ms 28464 KB Output is correct
64 Correct 304 ms 24780 KB Output is correct
65 Correct 125 ms 20428 KB Output is correct
66 Correct 315 ms 35956 KB Output is correct
67 Correct 77 ms 29816 KB Output is correct
68 Correct 121 ms 28108 KB Output is correct
69 Correct 127 ms 28340 KB Output is correct
70 Correct 112 ms 27468 KB Output is correct