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답안 #533375

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
533375 2022-03-05T19:02:50 Z Lobo Construction of Highway (JOI18_construction) C++17
100 / 100
 1010 ms 23116 KB 
#include<bits/stdc++.h>
using namespace std;

const long long inf = (long long) 1e18 + 10;
const int inf1 = (int) 1e9 + 10;
#define int long long
#define dbl long double
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()

#define maxn 100100

int n, a[maxn], b[maxn], c[maxn], sz[maxn], pai[maxn], ant[maxn], h[maxn], bit[maxn];
vector<int> g[maxn];
vector<pair<pair<int,int>,int>> bl[maxn];

void att(int pos, int val) {
    for(int i = pos; i <= n; i+= i&-i) {
        bit[i]+= val;
    }
}

int qrr(int pos) {
    int val = 0;
    for(int i = pos; i > 0; i-= i&-i) {
        val+= bit[i];
    }
    return val;
}

void dfshld(int u) {
    pair<int,int> mx;
    for(auto v : g[u]) {
        mx = max(mx,mp(sz[v],v));
    }

    if(mx.sc == 0) return;

    pai[mx.sc] = pai[u];
    ant[mx.sc] = u;
    dfshld(mx.sc);
    for(auto v : g[u]) {
        if(v == mx.sc) continue;
        pai[v] = v;
        ant[v] = u;
        dfshld(v);
    }
}

void dfssz(int u, int ant) {
    sz[u] = 1;
    for(auto v : g[u]) {
        if(v == ant) continue;
        h[v] = h[u]+1;
        dfssz(v,u);
        sz[u]+= sz[v];
    }
}


void solve() {
    cin >> n;

    vector<int> cc;
    for(int i = 1; i <= n; i++) {
        cin >> c[i];
        c[i] = -c[i];
        cc.pb(c[i]);
    }

    sort(all(cc));
    cc.erase(unique(all(cc)),cc.end());

    for(int i = 1; i <= n; i++) {
        c[i] = upper_bound(all(cc),c[i]) - cc.begin();
    }

    for(int i = 1; i <= n-1; i++) {
        cin >> a[i] >> b[i];
        g[a[i]].pb(b[i]);
    }

    dfssz(1,1);
    ant[1] = 0;
    pai[1] = 1;
    dfshld(1);

    // for(int i = 1; i <= n; i++) {
    //     cout << i << " " << ant[i] << " " << pai[i] << endl;
    // }

    bl[1].pb(mp(mp(0,0),c[1]));
    //mp(mp(altura minima,altura maxima),cor)
    int cnt = 0;

    for(int i = 1; i <= n-1; i++) {
        int u = a[i];

        vector<pair<pair<int,int>,int>> cols;
        int v = u;
        while(v != 0) {
            // cout << "- " << v << endl;
            if(pai[v] != v) {
                for(auto x : bl[pai[v]]) {
                    if(x.fr.fr <= h[v]) cols.pb(mp(mp(x.fr.fr,min(h[v],x.fr.sc)),x.sc));
                }
            }
            else {
                cols.pb(mp(mp(h[v],h[v]),bl[v].back().sc));
            }

            v = ant[pai[v]];
        }

        // cout << b[i] << " " << c[b[i]] << endl;
        sort(all(cols));
        int ans = 0;
        for(auto X : cols) {
            int qtd = X.fr.sc-X.fr.fr+1;
            int col = X.sc;
            // cout << " " << X.fr.fr << " " << X.fr.sc << " " << col << endl;

            ans+= qtd*qrr(col-1);
            att(col,qtd);

            cnt++;
        }


        cout << ans << endl;

        for(auto X : cols) {
            int qtd = X.fr.sc-X.fr.fr+1;
            int col = X.sc;

            att(col,-qtd);
        }

        //atualizacao
        //bl[i] tem que estar em ordem decrescente, com o bloco do pai sendo o ultimo

        v = b[i];
        int newc = c[b[i]];
        while(v != 0) {
            // cout << "   " << v << endl;
            while(bl[pai[v]].size() && bl[pai[v]].back().fr.sc <= h[v]) bl[pai[v]].pop_back();
            if(bl[pai[v]].size() != 0) {
                auto x = bl[pai[v]].back();
                // cout << "    " << x.fr.fr << " " << x.fr.sc << " " << x.sc << " " << h[v] << endl;
                bl[pai[v]].pop_back();
                bl[pai[v]].pb(mp(mp(h[v]+1,x.fr.sc),x.sc));
            }

            
            bl[pai[v]].pb(mp(mp(h[pai[v]],h[v]),newc));
            
            v = ant[pai[v]];
        }


    }
    
    assert(cnt <= n*65);


}

int32_t main() {
    ios::sync_with_stdio(false); cin.tie(0);

    // freopen("in.in", "r", stdin);
    //freopen("out.out", "w", stdout);

    int tt = 1;
    // cin >> tt;
    while(tt--) solve();

}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 2 ms 5068 KB Output is correct
4 Correct 3 ms 5072 KB Output is correct
5 Correct 4 ms 5068 KB Output is correct
6 Correct 3 ms 5068 KB Output is correct
7 Correct 3 ms 5068 KB Output is correct
8 Correct 3 ms 5068 KB Output is correct
9 Correct 3 ms 5068 KB Output is correct
10 Correct 3 ms 5068 KB Output is correct
11 Correct 3 ms 5148 KB Output is correct
12 Correct 3 ms 5068 KB Output is correct
13 Correct 3 ms 5068 KB Output is correct
14 Correct 3 ms 5068 KB Output is correct
15 Correct 3 ms 5068 KB Output is correct
16 Correct 3 ms 5068 KB Output is correct
17 Correct 3 ms 5196 KB Output is correct
18 Correct 3 ms 5068 KB Output is correct
19 Correct 3 ms 5040 KB Output is correct
20 Correct 3 ms 5068 KB Output is correct
21 Correct 3 ms 5068 KB Output is correct
22 Correct 3 ms 5068 KB Output is correct
23 Correct 3 ms 5068 KB Output is correct
24 Correct 3 ms 5068 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 5068 KB Output is correct
27 Correct 3 ms 5068 KB Output is correct
28 Correct 3 ms 5068 KB Output is correct
29 Correct 3 ms 5068 KB Output is correct
30 Correct 4 ms 5068 KB Output is correct
31 Correct 3 ms 5068 KB Output is correct
32 Correct 3 ms 5068 KB Output is correct
33 Correct 3 ms 5068 KB Output is correct
34 Correct 3 ms 5068 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 3 ms 5068 KB Output is correct
37 Correct 3 ms 5068 KB Output is correct
38 Correct 4 ms 5068 KB Output is correct
39 Correct 3 ms 5068 KB Output is correct
40 Correct 3 ms 5068 KB Output is correct
41 Correct 3 ms 5068 KB Output is correct
42 Correct 3 ms 5120 KB Output is correct
43 Correct 3 ms 5068 KB Output is correct
44 Correct 3 ms 5068 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 2 ms 5068 KB Output is correct
4 Correct 3 ms 5072 KB Output is correct
5 Correct 4 ms 5068 KB Output is correct
6 Correct 3 ms 5068 KB Output is correct
7 Correct 3 ms 5068 KB Output is correct
8 Correct 3 ms 5068 KB Output is correct
9 Correct 3 ms 5068 KB Output is correct
10 Correct 3 ms 5068 KB Output is correct
11 Correct 3 ms 5148 KB Output is correct
12 Correct 3 ms 5068 KB Output is correct
13 Correct 3 ms 5068 KB Output is correct
14 Correct 3 ms 5068 KB Output is correct
15 Correct 3 ms 5068 KB Output is correct
16 Correct 3 ms 5068 KB Output is correct
17 Correct 3 ms 5196 KB Output is correct
18 Correct 3 ms 5068 KB Output is correct
19 Correct 3 ms 5040 KB Output is correct
20 Correct 3 ms 5068 KB Output is correct
21 Correct 3 ms 5068 KB Output is correct
22 Correct 3 ms 5068 KB Output is correct
23 Correct 3 ms 5068 KB Output is correct
24 Correct 3 ms 5068 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 5068 KB Output is correct
27 Correct 3 ms 5068 KB Output is correct
28 Correct 3 ms 5068 KB Output is correct
29 Correct 3 ms 5068 KB Output is correct
30 Correct 4 ms 5068 KB Output is correct
31 Correct 3 ms 5068 KB Output is correct
32 Correct 3 ms 5068 KB Output is correct
33 Correct 3 ms 5068 KB Output is correct
34 Correct 3 ms 5068 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 3 ms 5068 KB Output is correct
37 Correct 3 ms 5068 KB Output is correct
38 Correct 4 ms 5068 KB Output is correct
39 Correct 3 ms 5068 KB Output is correct
40 Correct 3 ms 5068 KB Output is correct
41 Correct 3 ms 5068 KB Output is correct
42 Correct 3 ms 5120 KB Output is correct
43 Correct 3 ms 5068 KB Output is correct
44 Correct 3 ms 5068 KB Output is correct
45 Correct 4 ms 5180 KB Output is correct
46 Correct 7 ms 5520 KB Output is correct
47 Correct 7 ms 5508 KB Output is correct
48 Correct 7 ms 5452 KB Output is correct
49 Correct 5 ms 5708 KB Output is correct
50 Correct 5 ms 5708 KB Output is correct
51 Correct 5 ms 5768 KB Output is correct
52 Correct 7 ms 5708 KB Output is correct
53 Correct 7 ms 5708 KB Output is correct
54 Correct 7 ms 5708 KB Output is correct
55 Correct 7 ms 5708 KB Output is correct
56 Correct 8 ms 5568 KB Output is correct
57 Correct 8 ms 5524 KB Output is correct
58 Correct 9 ms 5516 KB Output is correct
59 Correct 8 ms 5424 KB Output is correct
60 Correct 8 ms 5424 KB Output is correct
61 Correct 5 ms 5580 KB Output is correct
62 Correct 6 ms 5580 KB Output is correct
63 Correct 5 ms 5580 KB Output is correct
64 Correct 6 ms 5452 KB Output is correct
65 Correct 7 ms 5452 KB Output is correct
66 Correct 7 ms 5464 KB Output is correct
67 Correct 7 ms 5448 KB Output is correct
68 Correct 5 ms 5708 KB Output is correct
69 Correct 8 ms 5708 KB Output is correct
70 Correct 6 ms 5708 KB Output is correct
71 Correct 5 ms 5580 KB Output is correct
72 Correct 9 ms 5492 KB Output is correct
73 Correct 8 ms 5408 KB Output is correct
74 Correct 6 ms 5580 KB Output is correct
75 Correct 6 ms 5452 KB Output is correct
76 Correct 7 ms 5452 KB Output is correct
77 Correct 6 ms 5452 KB Output is correct
78 Correct 5 ms 5452 KB Output is correct
79 Correct 5 ms 5452 KB Output is correct
80 Correct 7 ms 5452 KB Output is correct
81 Correct 6 ms 5452 KB Output is correct
82 Correct 6 ms 5452 KB Output is correct
83 Correct 5 ms 5452 KB Output is correct
84 Correct 5 ms 5452 KB Output is correct
85 Correct 6 ms 5452 KB Output is correct
86 Correct 6 ms 5452 KB Output is correct

Subtask #3
84.0 / 84.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 2 ms 5068 KB Output is correct
4 Correct 3 ms 5072 KB Output is correct
5 Correct 4 ms 5068 KB Output is correct
6 Correct 3 ms 5068 KB Output is correct
7 Correct 3 ms 5068 KB Output is correct
8 Correct 3 ms 5068 KB Output is correct
9 Correct 3 ms 5068 KB Output is correct
10 Correct 3 ms 5068 KB Output is correct
11 Correct 3 ms 5148 KB Output is correct
12 Correct 3 ms 5068 KB Output is correct
13 Correct 3 ms 5068 KB Output is correct
14 Correct 3 ms 5068 KB Output is correct
15 Correct 3 ms 5068 KB Output is correct
16 Correct 3 ms 5068 KB Output is correct
17 Correct 3 ms 5196 KB Output is correct
18 Correct 3 ms 5068 KB Output is correct
19 Correct 3 ms 5040 KB Output is correct
20 Correct 3 ms 5068 KB Output is correct
21 Correct 3 ms 5068 KB Output is correct
22 Correct 3 ms 5068 KB Output is correct
23 Correct 3 ms 5068 KB Output is correct
24 Correct 3 ms 5068 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 5068 KB Output is correct
27 Correct 3 ms 5068 KB Output is correct
28 Correct 3 ms 5068 KB Output is correct
29 Correct 3 ms 5068 KB Output is correct
30 Correct 4 ms 5068 KB Output is correct
31 Correct 3 ms 5068 KB Output is correct
32 Correct 3 ms 5068 KB Output is correct
33 Correct 3 ms 5068 KB Output is correct
34 Correct 3 ms 5068 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 3 ms 5068 KB Output is correct
37 Correct 3 ms 5068 KB Output is correct
38 Correct 4 ms 5068 KB Output is correct
39 Correct 3 ms 5068 KB Output is correct
40 Correct 3 ms 5068 KB Output is correct
41 Correct 3 ms 5068 KB Output is correct
42 Correct 3 ms 5120 KB Output is correct
43 Correct 3 ms 5068 KB Output is correct
44 Correct 3 ms 5068 KB Output is correct
45 Correct 4 ms 5180 KB Output is correct
46 Correct 7 ms 5520 KB Output is correct
47 Correct 7 ms 5508 KB Output is correct
48 Correct 7 ms 5452 KB Output is correct
49 Correct 5 ms 5708 KB Output is correct
50 Correct 5 ms 5708 KB Output is correct
51 Correct 5 ms 5768 KB Output is correct
52 Correct 7 ms 5708 KB Output is correct
53 Correct 7 ms 5708 KB Output is correct
54 Correct 7 ms 5708 KB Output is correct
55 Correct 7 ms 5708 KB Output is correct
56 Correct 8 ms 5568 KB Output is correct
57 Correct 8 ms 5524 KB Output is correct
58 Correct 9 ms 5516 KB Output is correct
59 Correct 8 ms 5424 KB Output is correct
60 Correct 8 ms 5424 KB Output is correct
61 Correct 5 ms 5580 KB Output is correct
62 Correct 6 ms 5580 KB Output is correct
63 Correct 5 ms 5580 KB Output is correct
64 Correct 6 ms 5452 KB Output is correct
65 Correct 7 ms 5452 KB Output is correct
66 Correct 7 ms 5464 KB Output is correct
67 Correct 7 ms 5448 KB Output is correct
68 Correct 5 ms 5708 KB Output is correct
69 Correct 8 ms 5708 KB Output is correct
70 Correct 6 ms 5708 KB Output is correct
71 Correct 5 ms 5580 KB Output is correct
72 Correct 9 ms 5492 KB Output is correct
73 Correct 8 ms 5408 KB Output is correct
74 Correct 6 ms 5580 KB Output is correct
75 Correct 6 ms 5452 KB Output is correct
76 Correct 7 ms 5452 KB Output is correct
77 Correct 6 ms 5452 KB Output is correct
78 Correct 5 ms 5452 KB Output is correct
79 Correct 5 ms 5452 KB Output is correct
80 Correct 7 ms 5452 KB Output is correct
81 Correct 6 ms 5452 KB Output is correct
82 Correct 6 ms 5452 KB Output is correct
83 Correct 5 ms 5452 KB Output is correct
84 Correct 5 ms 5452 KB Output is correct
85 Correct 6 ms 5452 KB Output is correct
86 Correct 6 ms 5452 KB Output is correct
87 Correct 15 ms 6092 KB Output is correct
88 Correct 45 ms 8372 KB Output is correct
89 Correct 190 ms 16264 KB Output is correct
90 Correct 184 ms 16316 KB Output is correct
91 Correct 178 ms 16212 KB Output is correct
92 Correct 85 ms 23104 KB Output is correct
93 Correct 92 ms 23100 KB Output is correct
94 Correct 85 ms 23116 KB Output is correct
95 Correct 1002 ms 22808 KB Output is correct
96 Correct 1008 ms 22748 KB Output is correct
97 Correct 1010 ms 22756 KB Output is correct
98 Correct 1000 ms 22876 KB Output is correct
99 Correct 93 ms 19388 KB Output is correct
100 Correct 246 ms 16736 KB Output is correct
101 Correct 265 ms 16728 KB Output is correct
102 Correct 276 ms 16728 KB Output is correct
103 Correct 273 ms 16724 KB Output is correct
104 Correct 119 ms 19388 KB Output is correct
105 Correct 105 ms 19392 KB Output is correct
106 Correct 113 ms 19400 KB Output is correct
107 Correct 157 ms 15588 KB Output is correct
108 Correct 162 ms 15528 KB Output is correct
109 Correct 174 ms 15772 KB Output is correct
110 Correct 78 ms 22452 KB Output is correct
111 Correct 987 ms 22684 KB Output is correct
112 Correct 1002 ms 22044 KB Output is correct
113 Correct 79 ms 18624 KB Output is correct
114 Correct 236 ms 16692 KB Output is correct
115 Correct 249 ms 15972 KB Output is correct
116 Correct 88 ms 18668 KB Output is correct
117 Correct 97 ms 17344 KB Output is correct
118 Correct 100 ms 16728 KB Output is correct
119 Correct 106 ms 16328 KB Output is correct
120 Correct 87 ms 16520 KB Output is correct
121 Correct 84 ms 15936 KB Output is correct
122 Correct 83 ms 15604 KB Output is correct
123 Correct 108 ms 17360 KB Output is correct
124 Correct 119 ms 16792 KB Output is correct
125 Correct 115 ms 16420 KB Output is correct
126 Correct 102 ms 16704 KB Output is correct
127 Correct 99 ms 16032 KB Output is correct
128 Correct 96 ms 15732 KB Output is correct