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답안 #102497

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
102497 2019-03-25T11:34:39 Z Andrei1998 Designated Cities (JOI19_designated_cities) C++17
56 / 100
 2000 ms 100956 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long int lint;

const int NMAX = 200000 + 5;

int N;
set <int> tree[NMAX];
inline int parent(int node) { return *tree[node].begin(); }
map <lint, int> cost[NMAX];

lint ans[NMAX];

int main() {
    cin >> N;
    for (int i = 1; i < N; ++i) {
        int a, b, c, d;
        cin >> a >> b >> c >> d;
        tree[a].insert(b);
        tree[b].insert(a);
        cost[a][b] = c;
        cost[b][a] = d;
    }

    // E = 1
    lint sum = 0;
    function <void(int, int)> dfs_compute_from_1 = [&sum, &dfs_compute_from_1](const int node, const int father) {
        for (auto it: tree[node]) {
            if (it != father) {
                sum += cost[node][it];
                dfs_compute_from_1(it, node);
            }
        }
    };

    function <void(int, int)> dfs_compute = [&sum, &dfs_compute](const int node, const int father) {
        ans[1] = min(ans[1], sum);
        for (auto it: tree[node]) {
            if (it != father) {
                sum += cost[it][node] - cost[node][it];
                dfs_compute(it, node);
                sum -= cost[it][node] - cost[node][it];
            }
        }
    };
    dfs_compute_from_1(1, 0);
    ans[1] = sum;
    dfs_compute(1, 0);

    // E > 1
    priority_queue <pair <lint, int> > pq;
    for (int i = 1; i <= N; ++i) {
        if (tree[i].size() == 1) {
            pq.emplace(-cost[parent(i)][i], i);
        }
    }

    for (int i = pq.size(); i <= N; ++i) {
        ans[i] = 0;
    }

    int where = pq.size() - 1;
    while (where > 1) {
        int node; lint cst;
        tie(cst, node) = pq.top();
        cst = -cst;
        pq.pop();

        const int father = parent(node);
        tree[father].erase(node);
        if (tree[father].size() == 1) {
            pq.emplace(-(cst + cost[parent(father)][father]), father);
        } else {
            ans[where] = ans[where + 1] + cst;
            --where;
        }
    }

    int Q = 0;
    cin >> Q;
    for (int i = 1; i <= Q; ++i) {
        int E;
        cin >> E;
        cout << ans[E] << '\n';
    }
    return 0;
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 19072 KB Output is correct
2 Correct 19 ms 19200 KB Output is correct
3 Correct 19 ms 19072 KB Output is correct
4 Correct 22 ms 19192 KB Output is correct
5 Correct 20 ms 19072 KB Output is correct
6 Correct 21 ms 19200 KB Output is correct
7 Correct 19 ms 19072 KB Output is correct
8 Correct 19 ms 19044 KB Output is correct
9 Correct 19 ms 19200 KB Output is correct
10 Correct 22 ms 19200 KB Output is correct
11 Correct 19 ms 19200 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 19200 KB Output is correct
2 Correct 1188 ms 65932 KB Output is correct
3 Correct 1014 ms 89984 KB Output is correct
4 Correct 1048 ms 66140 KB Output is correct
5 Correct 1441 ms 66216 KB Output is correct
6 Correct 1264 ms 69400 KB Output is correct
7 Correct 1581 ms 66816 KB Output is correct
8 Correct 1167 ms 90868 KB Output is correct
9 Correct 1745 ms 68104 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 19072 KB Output is correct
2 Correct 1195 ms 66040 KB Output is correct
3 Correct 1053 ms 94284 KB Output is correct
4 Correct 1082 ms 65996 KB Output is correct
5 Correct 1320 ms 66180 KB Output is correct
6 Correct 1390 ms 70012 KB Output is correct
7 Correct 1834 ms 67676 KB Output is correct
8 Correct 1111 ms 81488 KB Output is correct
9 Correct 1808 ms 68032 KB Output is correct

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 19072 KB Output is correct
2 Correct 19 ms 19200 KB Output is correct
3 Correct 19 ms 19072 KB Output is correct
4 Correct 22 ms 19192 KB Output is correct
5 Correct 20 ms 19072 KB Output is correct
6 Correct 21 ms 19200 KB Output is correct
7 Correct 19 ms 19072 KB Output is correct
8 Correct 19 ms 19044 KB Output is correct
9 Correct 19 ms 19200 KB Output is correct
10 Correct 22 ms 19200 KB Output is correct
11 Correct 19 ms 19200 KB Output is correct
12 Correct 22 ms 19072 KB Output is correct
13 Correct 29 ms 19712 KB Output is correct
14 Correct 29 ms 19968 KB Output is correct
15 Correct 29 ms 19840 KB Output is correct
16 Correct 30 ms 19584 KB Output is correct
17 Correct 30 ms 19584 KB Output is correct
18 Correct 32 ms 19456 KB Output is correct
19 Correct 29 ms 19760 KB Output is correct
20 Correct 36 ms 19576 KB Output is correct
21 Correct 30 ms 19704 KB Output is correct
22 Correct 29 ms 19584 KB Output is correct
23 Correct 29 ms 19648 KB Output is correct
24 Correct 33 ms 19712 KB Output is correct
25 Correct 29 ms 19840 KB Output is correct
26 Correct 32 ms 19712 KB Output is correct

Subtask #5
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 19200 KB Output is correct
2 Correct 1188 ms 65932 KB Output is correct
3 Correct 1014 ms 89984 KB Output is correct
4 Correct 1048 ms 66140 KB Output is correct
5 Correct 1441 ms 66216 KB Output is correct
6 Correct 1264 ms 69400 KB Output is correct
7 Correct 1581 ms 66816 KB Output is correct
8 Correct 1167 ms 90868 KB Output is correct
9 Correct 1745 ms 68104 KB Output is correct
10 Correct 21 ms 19072 KB Output is correct
11 Correct 1195 ms 66040 KB Output is correct
12 Correct 1053 ms 94284 KB Output is correct
13 Correct 1082 ms 65996 KB Output is correct
14 Correct 1320 ms 66180 KB Output is correct
15 Correct 1390 ms 70012 KB Output is correct
16 Correct 1834 ms 67676 KB Output is correct
17 Correct 1111 ms 81488 KB Output is correct
18 Correct 1808 ms 68032 KB Output is correct
19 Correct 20 ms 19156 KB Output is correct
20 Correct 1385 ms 66196 KB Output is correct
21 Correct 1004 ms 100956 KB Output is correct
22 Correct 1091 ms 71180 KB Output is correct
23 Correct 1239 ms 72364 KB Output is correct
24 Correct 1150 ms 71212 KB Output is correct
25 Correct 1267 ms 72548 KB Output is correct
26 Correct 1181 ms 71400 KB Output is correct
27 Correct 1300 ms 72696 KB Output is correct
28 Correct 1363 ms 75636 KB Output is correct
29 Correct 1259 ms 72548 KB Output is correct
30 Correct 1321 ms 71924 KB Output is correct
31 Correct 1775 ms 73956 KB Output is correct
32 Correct 1191 ms 89164 KB Output is correct
33 Correct 1794 ms 74300 KB Output is correct

Subtask #6
0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 19072 KB Output is correct
2 Correct 19 ms 19200 KB Output is correct
3 Correct 19 ms 19072 KB Output is correct
4 Correct 22 ms 19192 KB Output is correct
5 Correct 20 ms 19072 KB Output is correct
6 Correct 21 ms 19200 KB Output is correct
7 Correct 19 ms 19072 KB Output is correct
8 Correct 19 ms 19044 KB Output is correct
9 Correct 19 ms 19200 KB Output is correct
10 Correct 22 ms 19200 KB Output is correct
11 Correct 19 ms 19200 KB Output is correct
12 Correct 21 ms 19200 KB Output is correct
13 Correct 1188 ms 65932 KB Output is correct
14 Correct 1014 ms 89984 KB Output is correct
15 Correct 1048 ms 66140 KB Output is correct
16 Correct 1441 ms 66216 KB Output is correct
17 Correct 1264 ms 69400 KB Output is correct
18 Correct 1581 ms 66816 KB Output is correct
19 Correct 1167 ms 90868 KB Output is correct
20 Correct 1745 ms 68104 KB Output is correct
21 Correct 21 ms 19072 KB Output is correct
22 Correct 1195 ms 66040 KB Output is correct
23 Correct 1053 ms 94284 KB Output is correct
24 Correct 1082 ms 65996 KB Output is correct
25 Correct 1320 ms 66180 KB Output is correct
26 Correct 1390 ms 70012 KB Output is correct
27 Correct 1834 ms 67676 KB Output is correct
28 Correct 1111 ms 81488 KB Output is correct
29 Correct 1808 ms 68032 KB Output is correct
30 Correct 22 ms 19072 KB Output is correct
31 Correct 29 ms 19712 KB Output is correct
32 Correct 29 ms 19968 KB Output is correct
33 Correct 29 ms 19840 KB Output is correct
34 Correct 30 ms 19584 KB Output is correct
35 Correct 30 ms 19584 KB Output is correct
36 Correct 32 ms 19456 KB Output is correct
37 Correct 29 ms 19760 KB Output is correct
38 Correct 36 ms 19576 KB Output is correct
39 Correct 30 ms 19704 KB Output is correct
40 Correct 29 ms 19584 KB Output is correct
41 Correct 29 ms 19648 KB Output is correct
42 Correct 33 ms 19712 KB Output is correct
43 Correct 29 ms 19840 KB Output is correct
44 Correct 32 ms 19712 KB Output is correct
45 Correct 20 ms 19156 KB Output is correct
46 Correct 1385 ms 66196 KB Output is correct
47 Correct 1004 ms 100956 KB Output is correct
48 Correct 1091 ms 71180 KB Output is correct
49 Correct 1239 ms 72364 KB Output is correct
50 Correct 1150 ms 71212 KB Output is correct
51 Correct 1267 ms 72548 KB Output is correct
52 Correct 1181 ms 71400 KB Output is correct
53 Correct 1300 ms 72696 KB Output is correct
54 Correct 1363 ms 75636 KB Output is correct
55 Correct 1259 ms 72548 KB Output is correct
56 Correct 1321 ms 71924 KB Output is correct
57 Correct 1775 ms 73956 KB Output is correct
58 Correct 1191 ms 89164 KB Output is correct
59 Correct 1794 ms 74300 KB Output is correct
60 Correct 20 ms 19072 KB Output is correct
61 Correct 1786 ms 73904 KB Output is correct
62 Correct 1452 ms 96992 KB Output is correct
63 Correct 1481 ms 73696 KB Output is correct
64 Correct 1636 ms 74000 KB Output is correct
65 Correct 1802 ms 73556 KB Output is correct
66 Correct 1671 ms 73844 KB Output is correct
67 Correct 1669 ms 73664 KB Output is correct
68 Correct 1660 ms 74072 KB Output is correct
69 Correct 1549 ms 76572 KB Output is correct
70 Correct 1709 ms 73816 KB Output is correct
71 Correct 1704 ms 74096 KB Output is correct
72 Correct 1955 ms 75084 KB Output is correct
73 Correct 1484 ms 87488 KB Output is correct
74 Execution timed out 2025 ms 77100 KB Time limit exceeded