oj.uz

Submission #1075662

# Submission time Handle Problem Language Result Execution time Memory
1075662 2024-08-26T08:26:41 Z Neco_arc Construction of Highway (JOI18_construction) C++17
100 / 100
 235 ms 22224 KB 
#include <bits/stdc++.h>
#ifdef LOCAL
#include <bits/debug.hpp>
#endif // LOCAL

#define ll long long
#define all(x) x.begin(), x.end()
#define Neco "Construction of Highway"
#define resp(x) sort(all(x)), x.resize(unique(all(x)) - x.begin())
#define getbit(x,i) ((x >> i)&1)
#define _left id * 2, l, mid
#define _right id * 2 + 1, mid + 1, r
#define cntbit(x) __builtin_popcountll(x)
#define fi(i, a, b) for(int i = a; i <= b; i++)
#define fid(i, a, b) for(int i = a; i >= b; i--)
#define maxn (int) 1e5 + 7

using namespace std;

const ll mod = 1e9 + 7; //972663749
const ll base = 911382323;

int n;
int a[maxn], h[maxn], par[maxn];
int nex[maxn], In[maxn], siz[maxn];
vector<int> edges[maxn];
vector<pair<int, int>> P[maxn];
pair<int, int> E[maxn];

/// DATA STRUCTURE
struct BIT {
    int bit[maxn];

    void update(int x, int val) {
        for(; x < maxn; x += (x & -x)) bit[x] += val;
    }

    int get(int x, int ans = 0) {
        for(; x > 0; x -= (x & -x)) ans += bit[x];
        return ans;
    }

} Bit;

/// PRE DFS
int dfs_siz(int u) {
    siz[u] = 1;
    for(int &v : edges[u]) {
        edges[v].erase(find(all(edges[v]), u));

        h[v] = h[u] + 1, par[v] = u;
        siz[u] += dfs_siz(v);
        if(siz[v] > siz[edges[u][0]]) swap(v, edges[u][0]);
    }
    return siz[u];
}

void dfs_hld(int u) {
    static int Time = 0;
    In[u] = ++Time;

    for(int v : edges[u]) {
        if(v == edges[u][0]) nex[v] = nex[u];
        else nex[v] = v;
        dfs_hld(v);
    }
}

/// HLD DECOMP <3
ll get(int u, int val) {

    ll ans = 0;
    vector<pair<int, int>> S, tmp;

    auto prog = [&](int u, int p) {
        int prv = h[p] - 1;
        tmp.clear();

        while(!P[p].empty() && h[P[p].back().first] < h[u]) {
            tmp.push_back({P[p].back().second, h[P[p].back().first] - prv});
            prv = h[P[p].back().first];
            P[p].pop_back();
        }

        if(!P[p].empty()) tmp.push_back({P[p].back().second, h[u] - prv});
        P[p].push_back({u, val});

        reverse(all(tmp));
        for(auto x : tmp) S.push_back(x);
    };

    for(; u != 0; u = par[nex[u]]) {
        prog(u, nex[u]);
    }


    for(auto [cl, w] : S) ans += 1ll * w * Bit.get(cl - 1), Bit.update(cl, w);
    for(auto [cl, w] : S) Bit.update(cl, -w);
    return ans;
}

void solve()
{
    vector<int> Comp;

    cin >> n;
    fi(i, 1, n) cin >> a[i], Comp.push_back(a[i]);
    fi(i, 1, n - 1) {
        int x, y; cin >> x >> y;

        E[i] = {x, y};
        edges[x].push_back(y), edges[y].push_back(x);
    }

    resp(Comp);
    fi(i, 1, n) a[i] = upper_bound(all(Comp), a[i]) - Comp.begin();

    nex[1] = h[1] = 1;
    dfs_siz(1), dfs_hld(1);
    get(1, a[1]);


    fi(i, 1, n - 1) {
        int x, y; tie(x, y) = E[i];
        cout << get(y, a[y]) << '\n';
    }

}


int main()
{

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    if(fopen(Neco".inp", "r")) {
        freopen(Neco".inp", "r", stdin);
        freopen(Neco".out", "w", stdout);
    }


    int nTest = 1;
//    cin >> nTest;


    while(nTest--)
    {
        solve();
    }


    return 0;
}

Compilation message

construction.cpp: In function 'int main()':
construction.cpp:139:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  139 |         freopen(Neco".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
construction.cpp:140:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  140 |         freopen(Neco".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5212 KB Output is correct
2 Correct 2 ms 5004 KB Output is correct
3 Correct 2 ms 5212 KB Output is correct
4 Correct 3 ms 5212 KB Output is correct
5 Correct 3 ms 5244 KB Output is correct
6 Correct 3 ms 5208 KB Output is correct
7 Correct 2 ms 5212 KB Output is correct
8 Correct 2 ms 5212 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct
10 Correct 2 ms 5212 KB Output is correct
11 Correct 2 ms 5212 KB Output is correct
12 Correct 2 ms 5212 KB Output is correct
13 Correct 2 ms 5208 KB Output is correct
14 Correct 3 ms 5152 KB Output is correct
15 Correct 2 ms 5212 KB Output is correct
16 Correct 3 ms 5212 KB Output is correct
17 Correct 3 ms 5212 KB Output is correct
18 Correct 3 ms 5272 KB Output is correct
19 Correct 3 ms 5212 KB Output is correct
20 Correct 2 ms 5212 KB Output is correct
21 Correct 2 ms 5212 KB Output is correct
22 Correct 2 ms 5212 KB Output is correct
23 Correct 3 ms 5212 KB Output is correct
24 Correct 3 ms 5212 KB Output is correct
25 Correct 3 ms 5212 KB Output is correct
26 Correct 3 ms 5212 KB Output is correct
27 Correct 2 ms 5212 KB Output is correct
28 Correct 2 ms 5212 KB Output is correct
29 Correct 3 ms 5212 KB Output is correct
30 Correct 3 ms 5096 KB Output is correct
31 Correct 3 ms 5212 KB Output is correct
32 Correct 3 ms 5140 KB Output is correct
33 Correct 2 ms 5168 KB Output is correct
34 Correct 3 ms 5212 KB Output is correct
35 Correct 2 ms 5212 KB Output is correct
36 Correct 3 ms 5212 KB Output is correct
37 Correct 3 ms 5212 KB Output is correct
38 Correct 3 ms 5212 KB Output is correct
39 Correct 2 ms 5212 KB Output is correct
40 Correct 3 ms 5212 KB Output is correct
41 Correct 2 ms 5212 KB Output is correct
42 Correct 3 ms 5212 KB Output is correct
43 Correct 2 ms 5212 KB Output is correct
44 Correct 2 ms 5212 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5212 KB Output is correct
2 Correct 2 ms 5004 KB Output is correct
3 Correct 2 ms 5212 KB Output is correct
4 Correct 3 ms 5212 KB Output is correct
5 Correct 3 ms 5244 KB Output is correct
6 Correct 3 ms 5208 KB Output is correct
7 Correct 2 ms 5212 KB Output is correct
8 Correct 2 ms 5212 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct
10 Correct 2 ms 5212 KB Output is correct
11 Correct 2 ms 5212 KB Output is correct
12 Correct 2 ms 5212 KB Output is correct
13 Correct 2 ms 5208 KB Output is correct
14 Correct 3 ms 5152 KB Output is correct
15 Correct 2 ms 5212 KB Output is correct
16 Correct 3 ms 5212 KB Output is correct
17 Correct 3 ms 5212 KB Output is correct
18 Correct 3 ms 5272 KB Output is correct
19 Correct 3 ms 5212 KB Output is correct
20 Correct 2 ms 5212 KB Output is correct
21 Correct 2 ms 5212 KB Output is correct
22 Correct 2 ms 5212 KB Output is correct
23 Correct 3 ms 5212 KB Output is correct
24 Correct 3 ms 5212 KB Output is correct
25 Correct 3 ms 5212 KB Output is correct
26 Correct 3 ms 5212 KB Output is correct
27 Correct 2 ms 5212 KB Output is correct
28 Correct 2 ms 5212 KB Output is correct
29 Correct 3 ms 5212 KB Output is correct
30 Correct 3 ms 5096 KB Output is correct
31 Correct 3 ms 5212 KB Output is correct
32 Correct 3 ms 5140 KB Output is correct
33 Correct 2 ms 5168 KB Output is correct
34 Correct 3 ms 5212 KB Output is correct
35 Correct 2 ms 5212 KB Output is correct
36 Correct 3 ms 5212 KB Output is correct
37 Correct 3 ms 5212 KB Output is correct
38 Correct 3 ms 5212 KB Output is correct
39 Correct 2 ms 5212 KB Output is correct
40 Correct 3 ms 5212 KB Output is correct
41 Correct 2 ms 5212 KB Output is correct
42 Correct 3 ms 5212 KB Output is correct
43 Correct 2 ms 5212 KB Output is correct
44 Correct 2 ms 5212 KB Output is correct
45 Correct 3 ms 5208 KB Output is correct
46 Correct 6 ms 5444 KB Output is correct
47 Correct 6 ms 5468 KB Output is correct
48 Correct 7 ms 5468 KB Output is correct
49 Correct 4 ms 5724 KB Output is correct
50 Correct 5 ms 5724 KB Output is correct
51 Correct 4 ms 5692 KB Output is correct
52 Correct 4 ms 5724 KB Output is correct
53 Correct 5 ms 5724 KB Output is correct
54 Correct 5 ms 5976 KB Output is correct
55 Correct 4 ms 5628 KB Output is correct
56 Correct 5 ms 5656 KB Output is correct
57 Correct 7 ms 5624 KB Output is correct
58 Correct 7 ms 5468 KB Output is correct
59 Correct 7 ms 5532 KB Output is correct
60 Correct 7 ms 5464 KB Output is correct
61 Correct 5 ms 5720 KB Output is correct
62 Correct 5 ms 5724 KB Output is correct
63 Correct 5 ms 5724 KB Output is correct
64 Correct 7 ms 5464 KB Output is correct
65 Correct 6 ms 5468 KB Output is correct
66 Correct 6 ms 5468 KB Output is correct
67 Correct 7 ms 5468 KB Output is correct
68 Correct 4 ms 5724 KB Output is correct
69 Correct 6 ms 5724 KB Output is correct
70 Correct 4 ms 5724 KB Output is correct
71 Correct 4 ms 5724 KB Output is correct
72 Correct 6 ms 5468 KB Output is correct
73 Correct 6 ms 5468 KB Output is correct
74 Correct 4 ms 5724 KB Output is correct
75 Correct 5 ms 5468 KB Output is correct
76 Correct 5 ms 5468 KB Output is correct
77 Correct 4 ms 5468 KB Output is correct
78 Correct 5 ms 5468 KB Output is correct
79 Correct 5 ms 5464 KB Output is correct
80 Correct 5 ms 5468 KB Output is correct
81 Correct 5 ms 5464 KB Output is correct
82 Correct 5 ms 5692 KB Output is correct
83 Correct 5 ms 5416 KB Output is correct
84 Correct 5 ms 5468 KB Output is correct
85 Correct 4 ms 5468 KB Output is correct
86 Correct 5 ms 5468 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5212 KB Output is correct
2 Correct 2 ms 5004 KB Output is correct
3 Correct 2 ms 5212 KB Output is correct
4 Correct 3 ms 5212 KB Output is correct
5 Correct 3 ms 5244 KB Output is correct
6 Correct 3 ms 5208 KB Output is correct
7 Correct 2 ms 5212 KB Output is correct
8 Correct 2 ms 5212 KB Output is correct
9 Correct 3 ms 5212 KB Output is correct
10 Correct 2 ms 5212 KB Output is correct
11 Correct 2 ms 5212 KB Output is correct
12 Correct 2 ms 5212 KB Output is correct
13 Correct 2 ms 5208 KB Output is correct
14 Correct 3 ms 5152 KB Output is correct
15 Correct 2 ms 5212 KB Output is correct
16 Correct 3 ms 5212 KB Output is correct
17 Correct 3 ms 5212 KB Output is correct
18 Correct 3 ms 5272 KB Output is correct
19 Correct 3 ms 5212 KB Output is correct
20 Correct 2 ms 5212 KB Output is correct
21 Correct 2 ms 5212 KB Output is correct
22 Correct 2 ms 5212 KB Output is correct
23 Correct 3 ms 5212 KB Output is correct
24 Correct 3 ms 5212 KB Output is correct
25 Correct 3 ms 5212 KB Output is correct
26 Correct 3 ms 5212 KB Output is correct
27 Correct 2 ms 5212 KB Output is correct
28 Correct 2 ms 5212 KB Output is correct
29 Correct 3 ms 5212 KB Output is correct
30 Correct 3 ms 5096 KB Output is correct
31 Correct 3 ms 5212 KB Output is correct
32 Correct 3 ms 5140 KB Output is correct
33 Correct 2 ms 5168 KB Output is correct
34 Correct 3 ms 5212 KB Output is correct
35 Correct 2 ms 5212 KB Output is correct
36 Correct 3 ms 5212 KB Output is correct
37 Correct 3 ms 5212 KB Output is correct
38 Correct 3 ms 5212 KB Output is correct
39 Correct 2 ms 5212 KB Output is correct
40 Correct 3 ms 5212 KB Output is correct
41 Correct 2 ms 5212 KB Output is correct
42 Correct 3 ms 5212 KB Output is correct
43 Correct 2 ms 5212 KB Output is correct
44 Correct 2 ms 5212 KB Output is correct
45 Correct 3 ms 5208 KB Output is correct
46 Correct 6 ms 5444 KB Output is correct
47 Correct 6 ms 5468 KB Output is correct
48 Correct 7 ms 5468 KB Output is correct
49 Correct 4 ms 5724 KB Output is correct
50 Correct 5 ms 5724 KB Output is correct
51 Correct 4 ms 5692 KB Output is correct
52 Correct 4 ms 5724 KB Output is correct
53 Correct 5 ms 5724 KB Output is correct
54 Correct 5 ms 5976 KB Output is correct
55 Correct 4 ms 5628 KB Output is correct
56 Correct 5 ms 5656 KB Output is correct
57 Correct 7 ms 5624 KB Output is correct
58 Correct 7 ms 5468 KB Output is correct
59 Correct 7 ms 5532 KB Output is correct
60 Correct 7 ms 5464 KB Output is correct
61 Correct 5 ms 5720 KB Output is correct
62 Correct 5 ms 5724 KB Output is correct
63 Correct 5 ms 5724 KB Output is correct
64 Correct 7 ms 5464 KB Output is correct
65 Correct 6 ms 5468 KB Output is correct
66 Correct 6 ms 5468 KB Output is correct
67 Correct 7 ms 5468 KB Output is correct
68 Correct 4 ms 5724 KB Output is correct
69 Correct 6 ms 5724 KB Output is correct
70 Correct 4 ms 5724 KB Output is correct
71 Correct 4 ms 5724 KB Output is correct
72 Correct 6 ms 5468 KB Output is correct
73 Correct 6 ms 5468 KB Output is correct
74 Correct 4 ms 5724 KB Output is correct
75 Correct 5 ms 5468 KB Output is correct
76 Correct 5 ms 5468 KB Output is correct
77 Correct 4 ms 5468 KB Output is correct
78 Correct 5 ms 5468 KB Output is correct
79 Correct 5 ms 5464 KB Output is correct
80 Correct 5 ms 5468 KB Output is correct
81 Correct 5 ms 5464 KB Output is correct
82 Correct 5 ms 5692 KB Output is correct
83 Correct 5 ms 5416 KB Output is correct
84 Correct 5 ms 5468 KB Output is correct
85 Correct 4 ms 5468 KB Output is correct
86 Correct 5 ms 5468 KB Output is correct
87 Correct 13 ms 6200 KB Output is correct
88 Correct 48 ms 8532 KB Output is correct
89 Correct 152 ms 16336 KB Output is correct
90 Correct 170 ms 16436 KB Output is correct
91 Correct 157 ms 16324 KB Output is correct
92 Correct 70 ms 22212 KB Output is correct
93 Correct 71 ms 22224 KB Output is correct
94 Correct 79 ms 22224 KB Output is correct
95 Correct 74 ms 20948 KB Output is correct
96 Correct 80 ms 21320 KB Output is correct
97 Correct 79 ms 21332 KB Output is correct
98 Correct 116 ms 21332 KB Output is correct
99 Correct 79 ms 19920 KB Output is correct
100 Correct 168 ms 15316 KB Output is correct
101 Correct 209 ms 15636 KB Output is correct
102 Correct 202 ms 15784 KB Output is correct
103 Correct 235 ms 15648 KB Output is correct
104 Correct 95 ms 20000 KB Output is correct
105 Correct 96 ms 19928 KB Output is correct
106 Correct 99 ms 19972 KB Output is correct
107 Correct 158 ms 15148 KB Output is correct
108 Correct 136 ms 15304 KB Output is correct
109 Correct 153 ms 15832 KB Output is correct
110 Correct 69 ms 21164 KB Output is correct
111 Correct 86 ms 21140 KB Output is correct
112 Correct 64 ms 20456 KB Output is correct
113 Correct 80 ms 19152 KB Output is correct
114 Correct 185 ms 15500 KB Output is correct
115 Correct 177 ms 14872 KB Output is correct
116 Correct 77 ms 18916 KB Output is correct
117 Correct 87 ms 17804 KB Output is correct
118 Correct 92 ms 17456 KB Output is correct
119 Correct 82 ms 17128 KB Output is correct
120 Correct 76 ms 17284 KB Output is correct
121 Correct 68 ms 16716 KB Output is correct
122 Correct 70 ms 16436 KB Output is correct
123 Correct 91 ms 17844 KB Output is correct
124 Correct 83 ms 17484 KB Output is correct
125 Correct 81 ms 17164 KB Output is correct
126 Correct 69 ms 17220 KB Output is correct
127 Correct 77 ms 16716 KB Output is correct
128 Correct 73 ms 16396 KB Output is correct