oj.uz

답안 #1109884

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1109884 2024-11-08T02:37:01 Z Sharky Construction of Highway (JOI18_construction) C++17
100 / 100
 827 ms 41952 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
const int inf = 1e18;

const int N = 1e5 + 10;
const int LG = 17;

int n, lift[N][LG], dep[N], root[N], sz[N], tin[N], par[N], c[N], fen[N], timer = 0, paint[N];
vector<int> adj[N];
pair<int, int> e[N];

void upd(int idx, int k) {
    for (; idx < N; idx += (idx & -idx)) fen[idx] += k;
}

int query(int idx) {
    int res = 0;
    for (; idx; idx -= (idx & -idx)) res += fen[idx];
    return res;
}

void dfs(int u, int p) {
    sz[u] = 1;
    for (int i = 1; i < LG; i++) lift[u][i] = lift[lift[u][i-1]][i-1];
    for (auto& v : adj[u]) {
        if (v == p) continue;
        lift[v][0] = u;
        dep[v] = dep[u] + 1;
        dfs(v, u);
        sz[u] += sz[v];
        if (sz[v] > sz[adj[u][0]]) swap(v, adj[u][0]);
    }
}

void hld(int u, int p) {
    tin[u] = ++timer;
    for (int v : adj[u]) {
        if (v == p) continue;
        root[v] = (v == adj[u][0] ? root[u] : v);
        hld(v, u);
    }
}

struct SegTree {
    int size = 1;
    vector<int> seg, lazy;
    void init(int n) {
        while (size < n) size *= 2;
        seg.assign(2 * size + 10, -inf);
        lazy.assign(2 * size + 10, -inf);
    }
    void push(int id) {
        if (lazy[id] == -inf) return;
        seg[id] = lazy[id];
        if (id < size) for (int i = 0; i < 2; i++) lazy[id*2+i] = lazy[id];
        lazy[id] = -inf;
    }
    void update(int ql, int qr, int val, int l, int r, int id) {
        push(id);
        if (qr < l || r < ql) return;
        if (ql <= l && r <= qr) {
            lazy[id] = val;
            push(id);
            return;
        }
        int mid = (l + r) / 2;
        update(ql, qr, val, l, mid, id * 2);
        update(ql, qr, val, mid + 1, r, id * 2 + 1);
    }
    int query(int pos, int l, int r, int id) {
        push(id);
        if (l == r) return seg[id];
        int mid = (l + r) / 2;
        if (pos <= mid) return query(pos, l, mid, id * 2);
        return query(pos, mid + 1, r, id * 2 + 1);
    }
} ST;

void update_path(int x, int y, int val) {
    for (; root[x] != root[y]; y = par[root[y]]) {
        if (dep[root[x]] > dep[root[y]]) swap(x, y);
        // cout << "update " << tin[root[y]] << ' ' << tin[y] << ' ' << val << '\n';
        ST.update(tin[root[y]], tin[y], val, 1, n, 1);
    }
    if (dep[x] > dep[y]) swap(x, y);
    // cout << "update " << tin[x] << ' ' << tin[y] << '\n';
    ST.update(tin[x], tin[y], val, 1, n, 1);
}

int jump(int sta, int dist) {
    for (int i = LG - 1; i >= 0; i--) if (dist & (1 << i)) sta = lift[sta][i];
    return sta;
}

int32_t main() {
    ios::sync_with_stdio(0); cin.tie(0);
    cin >> n;
    vector<int> disc;
    for (int i = 1; i <= n; i++) {
        cin >> c[i];
        disc.push_back(c[i]);
    }
    sort(disc.begin(), disc.end());
    disc.erase(unique(disc.begin(), disc.end()), disc.end());
    for (int i = 1; i <= n; i++) {
        c[i] = lower_bound(disc.begin(), disc.end(), c[i]) - disc.begin() + 1;
    }
    for (int i = 1; i < n; i++) {
        int u, v;
        cin >> u >> v;
        paint[i] = c[v];
        adj[u].push_back(v);
        par[v] = u;
        e[i] = {u, v};
    }
    // for (int i = 1; i < n; i++) cout << paint[i] << '\n';
    lift[1][0] = 1, root[1] = 1;
    dfs(1, -1);
    hld(1, -1);
    ST.init(n + 1);
    for (int i = 1; i < n; i++) {
        int node = e[i].first;
        vector<pair<int, int>> vec;
        int tmp = ST.query(tin[node], 1, n, 1);
        // cout << "yo\n";
        int rt = i-1;
        if (!rt) rt = -inf;
        while (node >= 1) {
            // cout << "node: " << node << '\n';
            if (tmp == rt) {
                vec.push_back({tmp, dep[node] + 1});
                break;
            }
            int l = 1, r = dep[node];
            // find min x s.t. col[x] != 
            while (l < r) {
                int mid = (l + r) / 2;
                int tar = jump(node, mid);
                if (ST.query(tin[tar], 1, n, 1) != tmp) r = mid;
                else l = mid + 1;
            }
            vec.push_back({tmp, l});
            node = jump(node, l);
            tmp = ST.query(tin[node], 1, n, 1);
        }
        reverse(vec.begin(), vec.end());
        int inv = 0, tot = 0;
        if (i > 1) {
            for (auto& [x, y] : vec) {
                // cout << "pair: " << x << " " << y << '\n';
                inv += (tot - query(paint[x])) * y;
                upd(paint[x], y);
                tot += y;
            }
            for (auto& [x, y] : vec) upd(paint[x], -y);
        }
        // cout << "test\n";
        update_path(1, e[i].second, i);
        cout << inv << '\n';
    }
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10576 KB Output is correct
2 Correct 2 ms 10576 KB Output is correct
3 Correct 2 ms 10576 KB Output is correct
4 Correct 3 ms 10576 KB Output is correct
5 Correct 2 ms 10576 KB Output is correct
6 Correct 2 ms 10576 KB Output is correct
7 Correct 3 ms 10576 KB Output is correct
8 Correct 3 ms 10576 KB Output is correct
9 Correct 2 ms 10576 KB Output is correct
10 Correct 2 ms 10576 KB Output is correct
11 Correct 3 ms 10576 KB Output is correct
12 Correct 3 ms 10576 KB Output is correct
13 Correct 2 ms 10576 KB Output is correct
14 Correct 2 ms 10576 KB Output is correct
15 Correct 4 ms 10576 KB Output is correct
16 Correct 3 ms 10576 KB Output is correct
17 Correct 3 ms 10576 KB Output is correct
18 Correct 3 ms 10576 KB Output is correct
19 Correct 2 ms 10576 KB Output is correct
20 Correct 3 ms 10576 KB Output is correct
21 Correct 3 ms 10576 KB Output is correct
22 Correct 2 ms 10716 KB Output is correct
23 Correct 3 ms 10576 KB Output is correct
24 Correct 3 ms 10576 KB Output is correct
25 Correct 3 ms 10752 KB Output is correct
26 Correct 2 ms 10576 KB Output is correct
27 Correct 3 ms 10576 KB Output is correct
28 Correct 2 ms 10576 KB Output is correct
29 Correct 3 ms 10576 KB Output is correct
30 Correct 3 ms 10576 KB Output is correct
31 Correct 3 ms 10576 KB Output is correct
32 Correct 3 ms 10576 KB Output is correct
33 Correct 2 ms 10576 KB Output is correct
34 Correct 2 ms 10576 KB Output is correct
35 Correct 3 ms 10744 KB Output is correct
36 Correct 2 ms 10576 KB Output is correct
37 Correct 3 ms 10576 KB Output is correct
38 Correct 3 ms 10576 KB Output is correct
39 Correct 3 ms 10576 KB Output is correct
40 Correct 2 ms 10716 KB Output is correct
41 Correct 3 ms 10576 KB Output is correct
42 Correct 2 ms 10576 KB Output is correct
43 Correct 3 ms 10576 KB Output is correct
44 Correct 3 ms 10576 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10576 KB Output is correct
2 Correct 2 ms 10576 KB Output is correct
3 Correct 2 ms 10576 KB Output is correct
4 Correct 3 ms 10576 KB Output is correct
5 Correct 2 ms 10576 KB Output is correct
6 Correct 2 ms 10576 KB Output is correct
7 Correct 3 ms 10576 KB Output is correct
8 Correct 3 ms 10576 KB Output is correct
9 Correct 2 ms 10576 KB Output is correct
10 Correct 2 ms 10576 KB Output is correct
11 Correct 3 ms 10576 KB Output is correct
12 Correct 3 ms 10576 KB Output is correct
13 Correct 2 ms 10576 KB Output is correct
14 Correct 2 ms 10576 KB Output is correct
15 Correct 4 ms 10576 KB Output is correct
16 Correct 3 ms 10576 KB Output is correct
17 Correct 3 ms 10576 KB Output is correct
18 Correct 3 ms 10576 KB Output is correct
19 Correct 2 ms 10576 KB Output is correct
20 Correct 3 ms 10576 KB Output is correct
21 Correct 3 ms 10576 KB Output is correct
22 Correct 2 ms 10716 KB Output is correct
23 Correct 3 ms 10576 KB Output is correct
24 Correct 3 ms 10576 KB Output is correct
25 Correct 3 ms 10752 KB Output is correct
26 Correct 2 ms 10576 KB Output is correct
27 Correct 3 ms 10576 KB Output is correct
28 Correct 2 ms 10576 KB Output is correct
29 Correct 3 ms 10576 KB Output is correct
30 Correct 3 ms 10576 KB Output is correct
31 Correct 3 ms 10576 KB Output is correct
32 Correct 3 ms 10576 KB Output is correct
33 Correct 2 ms 10576 KB Output is correct
34 Correct 2 ms 10576 KB Output is correct
35 Correct 3 ms 10744 KB Output is correct
36 Correct 2 ms 10576 KB Output is correct
37 Correct 3 ms 10576 KB Output is correct
38 Correct 3 ms 10576 KB Output is correct
39 Correct 3 ms 10576 KB Output is correct
40 Correct 2 ms 10716 KB Output is correct
41 Correct 3 ms 10576 KB Output is correct
42 Correct 2 ms 10576 KB Output is correct
43 Correct 3 ms 10576 KB Output is correct
44 Correct 3 ms 10576 KB Output is correct
45 Correct 4 ms 10576 KB Output is correct
46 Correct 10 ms 13136 KB Output is correct
47 Correct 10 ms 13136 KB Output is correct
48 Correct 9 ms 13136 KB Output is correct
49 Correct 7 ms 13392 KB Output is correct
50 Correct 5 ms 13392 KB Output is correct
51 Correct 5 ms 13392 KB Output is correct
52 Correct 9 ms 13136 KB Output is correct
53 Correct 7 ms 13136 KB Output is correct
54 Correct 7 ms 13136 KB Output is correct
55 Correct 7 ms 13136 KB Output is correct
56 Correct 8 ms 13296 KB Output is correct
57 Correct 15 ms 12880 KB Output is correct
58 Correct 16 ms 13136 KB Output is correct
59 Correct 17 ms 13136 KB Output is correct
60 Correct 17 ms 13136 KB Output is correct
61 Correct 9 ms 13136 KB Output is correct
62 Correct 8 ms 13136 KB Output is correct
63 Correct 9 ms 13136 KB Output is correct
64 Correct 10 ms 12976 KB Output is correct
65 Correct 10 ms 13136 KB Output is correct
66 Correct 10 ms 13136 KB Output is correct
67 Correct 10 ms 13148 KB Output is correct
68 Correct 5 ms 13392 KB Output is correct
69 Correct 7 ms 13140 KB Output is correct
70 Correct 7 ms 13136 KB Output is correct
71 Correct 7 ms 13136 KB Output is correct
72 Correct 20 ms 13136 KB Output is correct
73 Correct 15 ms 12880 KB Output is correct
74 Correct 9 ms 13136 KB Output is correct
75 Correct 8 ms 13136 KB Output is correct
76 Correct 7 ms 13136 KB Output is correct
77 Correct 6 ms 13136 KB Output is correct
78 Correct 7 ms 13136 KB Output is correct
79 Correct 6 ms 13136 KB Output is correct
80 Correct 7 ms 13136 KB Output is correct
81 Correct 9 ms 13316 KB Output is correct
82 Correct 10 ms 13136 KB Output is correct
83 Correct 10 ms 13136 KB Output is correct
84 Correct 9 ms 13136 KB Output is correct
85 Correct 9 ms 13160 KB Output is correct
86 Correct 9 ms 13136 KB Output is correct

Subtask #3
84.0 / 84.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10576 KB Output is correct
2 Correct 2 ms 10576 KB Output is correct
3 Correct 2 ms 10576 KB Output is correct
4 Correct 3 ms 10576 KB Output is correct
5 Correct 2 ms 10576 KB Output is correct
6 Correct 2 ms 10576 KB Output is correct
7 Correct 3 ms 10576 KB Output is correct
8 Correct 3 ms 10576 KB Output is correct
9 Correct 2 ms 10576 KB Output is correct
10 Correct 2 ms 10576 KB Output is correct
11 Correct 3 ms 10576 KB Output is correct
12 Correct 3 ms 10576 KB Output is correct
13 Correct 2 ms 10576 KB Output is correct
14 Correct 2 ms 10576 KB Output is correct
15 Correct 4 ms 10576 KB Output is correct
16 Correct 3 ms 10576 KB Output is correct
17 Correct 3 ms 10576 KB Output is correct
18 Correct 3 ms 10576 KB Output is correct
19 Correct 2 ms 10576 KB Output is correct
20 Correct 3 ms 10576 KB Output is correct
21 Correct 3 ms 10576 KB Output is correct
22 Correct 2 ms 10716 KB Output is correct
23 Correct 3 ms 10576 KB Output is correct
24 Correct 3 ms 10576 KB Output is correct
25 Correct 3 ms 10752 KB Output is correct
26 Correct 2 ms 10576 KB Output is correct
27 Correct 3 ms 10576 KB Output is correct
28 Correct 2 ms 10576 KB Output is correct
29 Correct 3 ms 10576 KB Output is correct
30 Correct 3 ms 10576 KB Output is correct
31 Correct 3 ms 10576 KB Output is correct
32 Correct 3 ms 10576 KB Output is correct
33 Correct 2 ms 10576 KB Output is correct
34 Correct 2 ms 10576 KB Output is correct
35 Correct 3 ms 10744 KB Output is correct
36 Correct 2 ms 10576 KB Output is correct
37 Correct 3 ms 10576 KB Output is correct
38 Correct 3 ms 10576 KB Output is correct
39 Correct 3 ms 10576 KB Output is correct
40 Correct 2 ms 10716 KB Output is correct
41 Correct 3 ms 10576 KB Output is correct
42 Correct 2 ms 10576 KB Output is correct
43 Correct 3 ms 10576 KB Output is correct
44 Correct 3 ms 10576 KB Output is correct
45 Correct 4 ms 10576 KB Output is correct
46 Correct 10 ms 13136 KB Output is correct
47 Correct 10 ms 13136 KB Output is correct
48 Correct 9 ms 13136 KB Output is correct
49 Correct 7 ms 13392 KB Output is correct
50 Correct 5 ms 13392 KB Output is correct
51 Correct 5 ms 13392 KB Output is correct
52 Correct 9 ms 13136 KB Output is correct
53 Correct 7 ms 13136 KB Output is correct
54 Correct 7 ms 13136 KB Output is correct
55 Correct 7 ms 13136 KB Output is correct
56 Correct 8 ms 13296 KB Output is correct
57 Correct 15 ms 12880 KB Output is correct
58 Correct 16 ms 13136 KB Output is correct
59 Correct 17 ms 13136 KB Output is correct
60 Correct 17 ms 13136 KB Output is correct
61 Correct 9 ms 13136 KB Output is correct
62 Correct 8 ms 13136 KB Output is correct
63 Correct 9 ms 13136 KB Output is correct
64 Correct 10 ms 12976 KB Output is correct
65 Correct 10 ms 13136 KB Output is correct
66 Correct 10 ms 13136 KB Output is correct
67 Correct 10 ms 13148 KB Output is correct
68 Correct 5 ms 13392 KB Output is correct
69 Correct 7 ms 13140 KB Output is correct
70 Correct 7 ms 13136 KB Output is correct
71 Correct 7 ms 13136 KB Output is correct
72 Correct 20 ms 13136 KB Output is correct
73 Correct 15 ms 12880 KB Output is correct
74 Correct 9 ms 13136 KB Output is correct
75 Correct 8 ms 13136 KB Output is correct
76 Correct 7 ms 13136 KB Output is correct
77 Correct 6 ms 13136 KB Output is correct
78 Correct 7 ms 13136 KB Output is correct
79 Correct 6 ms 13136 KB Output is correct
80 Correct 7 ms 13136 KB Output is correct
81 Correct 9 ms 13316 KB Output is correct
82 Correct 10 ms 13136 KB Output is correct
83 Correct 10 ms 13136 KB Output is correct
84 Correct 9 ms 13136 KB Output is correct
85 Correct 9 ms 13160 KB Output is correct
86 Correct 9 ms 13136 KB Output is correct
87 Correct 25 ms 13904 KB Output is correct
88 Correct 89 ms 17436 KB Output is correct
89 Correct 384 ms 32964 KB Output is correct
90 Correct 371 ms 32964 KB Output is correct
91 Correct 408 ms 32964 KB Output is correct
92 Correct 111 ms 41952 KB Output is correct
93 Correct 99 ms 41924 KB Output is correct
94 Correct 106 ms 41924 KB Output is correct
95 Correct 198 ms 37572 KB Output is correct
96 Correct 183 ms 38088 KB Output is correct
97 Correct 181 ms 38084 KB Output is correct
98 Correct 202 ms 38116 KB Output is correct
99 Correct 207 ms 36804 KB Output is correct
100 Correct 779 ms 32832 KB Output is correct
101 Correct 827 ms 33132 KB Output is correct
102 Correct 790 ms 33252 KB Output is correct
103 Correct 785 ms 33216 KB Output is correct
104 Correct 304 ms 36548 KB Output is correct
105 Correct 447 ms 36804 KB Output is correct
106 Correct 378 ms 36544 KB Output is correct
107 Correct 393 ms 32196 KB Output is correct
108 Correct 400 ms 32344 KB Output is correct
109 Correct 430 ms 32456 KB Output is correct
110 Correct 102 ms 41300 KB Output is correct
111 Correct 175 ms 37572 KB Output is correct
112 Correct 170 ms 37316 KB Output is correct
113 Correct 171 ms 35932 KB Output is correct
114 Correct 784 ms 32964 KB Output is correct
115 Correct 767 ms 32524 KB Output is correct
116 Correct 293 ms 36136 KB Output is correct
117 Correct 185 ms 34248 KB Output is correct
118 Correct 179 ms 33732 KB Output is correct
119 Correct 197 ms 33440 KB Output is correct
120 Correct 180 ms 33884 KB Output is correct
121 Correct 165 ms 33364 KB Output is correct
122 Correct 185 ms 32964 KB Output is correct
123 Correct 363 ms 34500 KB Output is correct
124 Correct 346 ms 33668 KB Output is correct
125 Correct 391 ms 33500 KB Output is correct
126 Correct 371 ms 33988 KB Output is correct
127 Correct 357 ms 33320 KB Output is correct
128 Correct 424 ms 33220 KB Output is correct