답안 #47517 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
47517	2018-05-04T11:40:20 Z	qoo2p5	Construction of Highway (JOI18_construction)	C++17	100 / 100	372 ms	22216 KB

construction

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int INF = (int) 1e9 + 1e6 + 123;
const ll LINF = (ll) 1e18 + 1e9 + 123;

#define rep(i, s, t) for (auto i = (s); i < (t); ++(i))
#define per(i, s, t) for (auto i = (s); i >= (t); --(i))
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define mp make_pair
#define pb push_back

bool mini(auto &x, const auto &y) {
    if (y < x) {
        x = y;
        return 1;
    }
    return 0;
}

bool maxi(auto &x, const auto &y) {
    if (y > x) {
        x = y;
        return 1;
    }
    return 0;
}

void run();

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    run();
    return 0;
}

const int N = (int) 1e5 + 123;

struct F {
    int f[N];
    
    void add(int x, int y) {
        x++;
        for (; x < N; x += x & (-x)) f[x] += y;
    }
    
    int get(int i) {
        i++;
        int res = 0;
        for (; i > 0; i -= i & (-i)) res += f[i];
        return res;
    }
};

int n;
int c[N];
map<int, int> comp;
vector<int> g[N];

struct HLD {
    int up, down;
    vector<pair<int, int>> st;
    
    void set(int len, int c) {
        int alr = 0;
        while (sz(st) && st.back().second + alr <= len) {
            alr += st.back().second;
            st.pop_back();
        }
        assert(alr <= len);
        if (alr < len) {
            st.back().second -= (len - alr);
        }
        st.pb({c, len});
    }
};

int ptr;
HLD hld[N];
int id[N];
int depth[N];
int cnt[N];
int p[N];
pair<int, int> q[N];

void precalc(int v) {
    cnt[v] = 1;
    for (int u : g[v]) {
        precalc(u);
        cnt[v] += cnt[u];
    }
}

void build_hld(int v, int cur = -1) {
    if (cur == -1) {
        cur = ptr++;
        hld[cur].up = v;
    }
    id[v] = cur;
    hld[cur].down = v;
    int to = -1;
    for (int u : g[v]) {
        if (to == -1 || cnt[u] > cnt[to]) {
            to = u;
        }
    }
    if (to != -1) {
        build_hld(to, cur);
    }
    for (int u : g[v]) {
        if (u != to) {
            build_hld(u, -1);
        }
    }
}

F f;

ll get(int v) {
    static vector<pair<int, int>> cool;
    cool.clear();
    while (v > 0) {
        int w = id[v];
        int len = depth[v] - depth[hld[w].up] + 1;
        int alr = 0;
        int ptr = sz(hld[w].st) - 1;
        while (ptr >= 0 && hld[w].st[ptr].second + alr <= len) {
            alr += hld[w].st[ptr].second;
            ptr--;
        }
        if (alr < len) {
            assert(ptr >= 0);
            cool.pb({hld[w].st[ptr].first, len - alr});
        }
        rep(i, ptr + 1, sz(hld[w].st)) {
            cool.pb(hld[w].st[i]);
        }
        v = p[hld[w].up];
    }
    
    ll ans = 0;
    for (auto &it : cool) {
        ans += it.second * f.get(it.first - 1);
        f.add(it.first, it.second);
    }
    for (auto &it : cool) {
        f.add(it.first, -it.second);
    }
    
    return ans;
}

void set_color(int v, int c) {
    while (v > 0) {
        int w = id[v];
        int len = depth[v] - depth[hld[w].up] + 1;
        hld[w].set(len, c);
        v = p[hld[w].up];
    }
}

void run() {
    cin >> n;
    rep(i, 1, n + 1) {
        cin >> c[i];
        comp[c[i]] = 1;
    }
    {
        int ptr = 0;
        for (auto &it : comp) {
            it.second = ptr++;
        }
    }
    rep(i, 1, n + 1) {
        c[i] = comp[c[i]];
    }
    rep(i, 1, n) {
        int a, b;
        cin >> a >> b;
        g[a].pb(b);
        p[b] = a;
        depth[b] = depth[a] + 1;
        q[i] = {a, b};
    }
    precalc(1);
    build_hld(1);
    rep(i, 0, ptr) {
        hld[i].st.pb({-1, depth[hld[i].down] - depth[hld[i].up] + 1});
    }
    
    set_color(1, c[1]);
    rep(i, 1, n) {
        cout << get(q[i].first) << "\n";
        set_color(q[i].second, c[q[i].second]);
    }
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	5880 KB	Output is correct
2	Correct	6 ms	5988 KB	Output is correct
3	Correct	6 ms	5988 KB	Output is correct
4	Correct	6 ms	5988 KB	Output is correct
5	Correct	6 ms	6228 KB	Output is correct
6	Correct	6 ms	6228 KB	Output is correct
7	Correct	6 ms	6228 KB	Output is correct
8	Correct	6 ms	6228 KB	Output is correct
9	Correct	6 ms	6244 KB	Output is correct
10	Correct	6 ms	6244 KB	Output is correct
11	Correct	6 ms	6244 KB	Output is correct
12	Correct	6 ms	6244 KB	Output is correct
13	Correct	6 ms	6244 KB	Output is correct
14	Correct	6 ms	6244 KB	Output is correct
15	Correct	7 ms	6252 KB	Output is correct
16	Correct	6 ms	6252 KB	Output is correct
17	Correct	6 ms	6252 KB	Output is correct
18	Correct	6 ms	6252 KB	Output is correct
19	Correct	6 ms	6252 KB	Output is correct
20	Correct	6 ms	6252 KB	Output is correct
21	Correct	6 ms	6252 KB	Output is correct
22	Correct	6 ms	6252 KB	Output is correct
23	Correct	6 ms	6252 KB	Output is correct
24	Correct	6 ms	6252 KB	Output is correct
25	Correct	6 ms	6252 KB	Output is correct
26	Correct	6 ms	6252 KB	Output is correct
27	Correct	6 ms	6252 KB	Output is correct
28	Correct	6 ms	6252 KB	Output is correct
29	Correct	6 ms	6252 KB	Output is correct
30	Correct	6 ms	6252 KB	Output is correct
31	Correct	6 ms	6252 KB	Output is correct
32	Correct	6 ms	6252 KB	Output is correct
33	Correct	6 ms	6252 KB	Output is correct
34	Correct	6 ms	6252 KB	Output is correct
35	Correct	6 ms	6252 KB	Output is correct
36	Correct	6 ms	6260 KB	Output is correct
37	Correct	6 ms	6260 KB	Output is correct
38	Correct	6 ms	6260 KB	Output is correct
39	Correct	6 ms	6260 KB	Output is correct
40	Correct	6 ms	6260 KB	Output is correct
41	Correct	6 ms	6260 KB	Output is correct
42	Correct	6 ms	6260 KB	Output is correct
43	Correct	6 ms	6260 KB	Output is correct
44	Correct	6 ms	6260 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	5880 KB	Output is correct
2	Correct	6 ms	5988 KB	Output is correct
3	Correct	6 ms	5988 KB	Output is correct
4	Correct	6 ms	5988 KB	Output is correct
5	Correct	6 ms	6228 KB	Output is correct
6	Correct	6 ms	6228 KB	Output is correct
7	Correct	6 ms	6228 KB	Output is correct
8	Correct	6 ms	6228 KB	Output is correct
9	Correct	6 ms	6244 KB	Output is correct
10	Correct	6 ms	6244 KB	Output is correct
11	Correct	6 ms	6244 KB	Output is correct
12	Correct	6 ms	6244 KB	Output is correct
13	Correct	6 ms	6244 KB	Output is correct
14	Correct	6 ms	6244 KB	Output is correct
15	Correct	7 ms	6252 KB	Output is correct
16	Correct	6 ms	6252 KB	Output is correct
17	Correct	6 ms	6252 KB	Output is correct
18	Correct	6 ms	6252 KB	Output is correct
19	Correct	6 ms	6252 KB	Output is correct
20	Correct	6 ms	6252 KB	Output is correct
21	Correct	6 ms	6252 KB	Output is correct
22	Correct	6 ms	6252 KB	Output is correct
23	Correct	6 ms	6252 KB	Output is correct
24	Correct	6 ms	6252 KB	Output is correct
25	Correct	6 ms	6252 KB	Output is correct
26	Correct	6 ms	6252 KB	Output is correct
27	Correct	6 ms	6252 KB	Output is correct
28	Correct	6 ms	6252 KB	Output is correct
29	Correct	6 ms	6252 KB	Output is correct
30	Correct	6 ms	6252 KB	Output is correct
31	Correct	6 ms	6252 KB	Output is correct
32	Correct	6 ms	6252 KB	Output is correct
33	Correct	6 ms	6252 KB	Output is correct
34	Correct	6 ms	6252 KB	Output is correct
35	Correct	6 ms	6252 KB	Output is correct
36	Correct	6 ms	6260 KB	Output is correct
37	Correct	6 ms	6260 KB	Output is correct
38	Correct	6 ms	6260 KB	Output is correct
39	Correct	6 ms	6260 KB	Output is correct
40	Correct	6 ms	6260 KB	Output is correct
41	Correct	6 ms	6260 KB	Output is correct
42	Correct	6 ms	6260 KB	Output is correct
43	Correct	6 ms	6260 KB	Output is correct
44	Correct	6 ms	6260 KB	Output is correct
45	Correct	7 ms	6268 KB	Output is correct
46	Correct	12 ms	6652 KB	Output is correct
47	Correct	12 ms	6652 KB	Output is correct
48	Correct	12 ms	6668 KB	Output is correct
49	Correct	10 ms	6812 KB	Output is correct
50	Correct	10 ms	6828 KB	Output is correct
51	Correct	10 ms	6828 KB	Output is correct
52	Correct	10 ms	6828 KB	Output is correct
53	Correct	10 ms	6828 KB	Output is correct
54	Correct	10 ms	6828 KB	Output is correct
55	Correct	10 ms	6828 KB	Output is correct
56	Correct	10 ms	6828 KB	Output is correct
57	Correct	13 ms	6828 KB	Output is correct
58	Correct	14 ms	6828 KB	Output is correct
59	Correct	14 ms	6828 KB	Output is correct
60	Correct	13 ms	6828 KB	Output is correct
61	Correct	10 ms	6828 KB	Output is correct
62	Correct	10 ms	6828 KB	Output is correct
63	Correct	11 ms	6828 KB	Output is correct
64	Correct	10 ms	6828 KB	Output is correct
65	Correct	11 ms	6828 KB	Output is correct
66	Correct	11 ms	6828 KB	Output is correct
67	Correct	11 ms	6828 KB	Output is correct
68	Correct	8 ms	6828 KB	Output is correct
69	Correct	10 ms	6828 KB	Output is correct
70	Correct	9 ms	6828 KB	Output is correct
71	Correct	9 ms	6828 KB	Output is correct
72	Correct	13 ms	6828 KB	Output is correct
73	Correct	12 ms	6828 KB	Output is correct
74	Correct	9 ms	6828 KB	Output is correct
75	Correct	10 ms	6828 KB	Output is correct
76	Correct	10 ms	6828 KB	Output is correct
77	Correct	10 ms	6828 KB	Output is correct
78	Correct	9 ms	6828 KB	Output is correct
79	Correct	9 ms	6828 KB	Output is correct
80	Correct	9 ms	6828 KB	Output is correct
81	Correct	10 ms	6828 KB	Output is correct
82	Correct	10 ms	6828 KB	Output is correct
83	Correct	10 ms	6828 KB	Output is correct
84	Correct	9 ms	6828 KB	Output is correct
85	Correct	9 ms	6828 KB	Output is correct
86	Correct	9 ms	6828 KB	Output is correct

Subtask #3
84.0 / 84.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	5880 KB	Output is correct
2	Correct	6 ms	5988 KB	Output is correct
3	Correct	6 ms	5988 KB	Output is correct
4	Correct	6 ms	5988 KB	Output is correct
5	Correct	6 ms	6228 KB	Output is correct
6	Correct	6 ms	6228 KB	Output is correct
7	Correct	6 ms	6228 KB	Output is correct
8	Correct	6 ms	6228 KB	Output is correct
9	Correct	6 ms	6244 KB	Output is correct
10	Correct	6 ms	6244 KB	Output is correct
11	Correct	6 ms	6244 KB	Output is correct
12	Correct	6 ms	6244 KB	Output is correct
13	Correct	6 ms	6244 KB	Output is correct
14	Correct	6 ms	6244 KB	Output is correct
15	Correct	7 ms	6252 KB	Output is correct
16	Correct	6 ms	6252 KB	Output is correct
17	Correct	6 ms	6252 KB	Output is correct
18	Correct	6 ms	6252 KB	Output is correct
19	Correct	6 ms	6252 KB	Output is correct
20	Correct	6 ms	6252 KB	Output is correct
21	Correct	6 ms	6252 KB	Output is correct
22	Correct	6 ms	6252 KB	Output is correct
23	Correct	6 ms	6252 KB	Output is correct
24	Correct	6 ms	6252 KB	Output is correct
25	Correct	6 ms	6252 KB	Output is correct
26	Correct	6 ms	6252 KB	Output is correct
27	Correct	6 ms	6252 KB	Output is correct
28	Correct	6 ms	6252 KB	Output is correct
29	Correct	6 ms	6252 KB	Output is correct
30	Correct	6 ms	6252 KB	Output is correct
31	Correct	6 ms	6252 KB	Output is correct
32	Correct	6 ms	6252 KB	Output is correct
33	Correct	6 ms	6252 KB	Output is correct
34	Correct	6 ms	6252 KB	Output is correct
35	Correct	6 ms	6252 KB	Output is correct
36	Correct	6 ms	6260 KB	Output is correct
37	Correct	6 ms	6260 KB	Output is correct
38	Correct	6 ms	6260 KB	Output is correct
39	Correct	6 ms	6260 KB	Output is correct
40	Correct	6 ms	6260 KB	Output is correct
41	Correct	6 ms	6260 KB	Output is correct
42	Correct	6 ms	6260 KB	Output is correct
43	Correct	6 ms	6260 KB	Output is correct
44	Correct	6 ms	6260 KB	Output is correct
45	Correct	7 ms	6268 KB	Output is correct
46	Correct	12 ms	6652 KB	Output is correct
47	Correct	12 ms	6652 KB	Output is correct
48	Correct	12 ms	6668 KB	Output is correct
49	Correct	10 ms	6812 KB	Output is correct
50	Correct	10 ms	6828 KB	Output is correct
51	Correct	10 ms	6828 KB	Output is correct
52	Correct	10 ms	6828 KB	Output is correct
53	Correct	10 ms	6828 KB	Output is correct
54	Correct	10 ms	6828 KB	Output is correct
55	Correct	10 ms	6828 KB	Output is correct
56	Correct	10 ms	6828 KB	Output is correct
57	Correct	13 ms	6828 KB	Output is correct
58	Correct	14 ms	6828 KB	Output is correct
59	Correct	14 ms	6828 KB	Output is correct
60	Correct	13 ms	6828 KB	Output is correct
61	Correct	10 ms	6828 KB	Output is correct
62	Correct	10 ms	6828 KB	Output is correct
63	Correct	11 ms	6828 KB	Output is correct
64	Correct	10 ms	6828 KB	Output is correct
65	Correct	11 ms	6828 KB	Output is correct
66	Correct	11 ms	6828 KB	Output is correct
67	Correct	11 ms	6828 KB	Output is correct
68	Correct	8 ms	6828 KB	Output is correct
69	Correct	10 ms	6828 KB	Output is correct
70	Correct	9 ms	6828 KB	Output is correct
71	Correct	9 ms	6828 KB	Output is correct
72	Correct	13 ms	6828 KB	Output is correct
73	Correct	12 ms	6828 KB	Output is correct
74	Correct	9 ms	6828 KB	Output is correct
75	Correct	10 ms	6828 KB	Output is correct
76	Correct	10 ms	6828 KB	Output is correct
77	Correct	10 ms	6828 KB	Output is correct
78	Correct	9 ms	6828 KB	Output is correct
79	Correct	9 ms	6828 KB	Output is correct
80	Correct	9 ms	6828 KB	Output is correct
81	Correct	10 ms	6828 KB	Output is correct
82	Correct	10 ms	6828 KB	Output is correct
83	Correct	10 ms	6828 KB	Output is correct
84	Correct	9 ms	6828 KB	Output is correct
85	Correct	9 ms	6828 KB	Output is correct
86	Correct	9 ms	6828 KB	Output is correct
87	Correct	23 ms	7356 KB	Output is correct
88	Correct	70 ms	9660 KB	Output is correct
89	Correct	281 ms	17808 KB	Output is correct
90	Correct	273 ms	17816 KB	Output is correct
91	Correct	264 ms	17816 KB	Output is correct
92	Correct	171 ms	22216 KB	Output is correct
93	Correct	194 ms	22216 KB	Output is correct
94	Correct	186 ms	22216 KB	Output is correct
95	Correct	175 ms	22216 KB	Output is correct
96	Correct	213 ms	22216 KB	Output is correct
97	Correct	193 ms	22216 KB	Output is correct
98	Correct	185 ms	22216 KB	Output is correct
99	Correct	186 ms	22216 KB	Output is correct
100	Correct	324 ms	22216 KB	Output is correct
101	Correct	361 ms	22216 KB	Output is correct
102	Correct	372 ms	22216 KB	Output is correct
103	Correct	358 ms	22216 KB	Output is correct
104	Correct	189 ms	22216 KB	Output is correct
105	Correct	211 ms	22216 KB	Output is correct
106	Correct	194 ms	22216 KB	Output is correct
107	Correct	192 ms	22216 KB	Output is correct
108	Correct	188 ms	22216 KB	Output is correct
109	Correct	242 ms	22216 KB	Output is correct
110	Correct	97 ms	22216 KB	Output is correct
111	Correct	189 ms	22216 KB	Output is correct
112	Correct	111 ms	22216 KB	Output is correct
113	Correct	115 ms	22216 KB	Output is correct
114	Correct	335 ms	22216 KB	Output is correct
115	Correct	278 ms	22216 KB	Output is correct
116	Correct	135 ms	22216 KB	Output is correct
117	Correct	187 ms	22216 KB	Output is correct
118	Correct	191 ms	22216 KB	Output is correct
119	Correct	189 ms	22216 KB	Output is correct
120	Correct	117 ms	22216 KB	Output is correct
121	Correct	118 ms	22216 KB	Output is correct
122	Correct	114 ms	22216 KB	Output is correct
123	Correct	194 ms	22216 KB	Output is correct
124	Correct	193 ms	22216 KB	Output is correct
125	Correct	201 ms	22216 KB	Output is correct
126	Correct	130 ms	22216 KB	Output is correct
127	Correct	126 ms	22216 KB	Output is correct
128	Correct	129 ms	22216 KB	Output is correct

답안 #47517

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 9.0 / 9.0

Subtask #3 84.0 / 84.0

Subtask #1
7.0 / 7.0

Subtask #2
9.0 / 9.0

Subtask #3
84.0 / 84.0