oj.uz

답안 #888143

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
888143 2023-12-16T08:33:57 Z Shayan86 Construction of Highway (JOI18_construction) C++14
16 / 100
 2000 ms 28116 KB 
#include <bits/stdc++.h>
using namespace std;
 
#pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// Ofast, O0, O1, O2, O3, unroll-loops, fast-math, trapv
 
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
 
#define Mp          make_pair
#define sep         ' '
#define endl        '\n'
#define F	        first
#define S	        second
#define pb          push_back
#define all(x)      (x).begin(),(x).end()
#define kill(res)	cout << res << '\n', exit(0);
#define set_dec(x)	cout << fixed << setprecision(x);
#define fast_io     ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file_io     freopen("input.txt", "r", stdin) ; freopen("output.txt", "w", stdout);
 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
 
const ll L = 18;
const ll sq = 250;
const ll N = 1e5 + 50;
const ll Mod = 1e9 + 7;
 
ll n, c[N], par[N][L], h[N], mx[N];
 
vector<int> edge, adj[N];
 
void dfs(int v, int p = 0){
    par[v][0] = p;
    for(int i = 1; i < L; i++){
        if(!par[v][i-1]) break;
        par[v][i] = par[par[v][i-1]][i-1];
    }
    for(int u: adj[v]){
        h[u] = h[v] + 1; dfs(u, v);
    }
}
 
int getPar(int v, int k){
    for(int i = 0; i < L; i++){
        if(k >> i & 1) v = par[v][i];
    }
    return v;
}
 
int lca(int v, int u){
    if(h[v] < h[u]) swap(u, v);
    v = getPar(v, h[v] - h[u]);
    if(u == v) return v;
 
    for(int i = L-1; i >= 0; i--){
        if(par[v][i] != par[u][i]){
            v = par[v][i]; u = par[u][i];
        }
    }
    return par[v][0];
}
 
void prep(int v){
    for(int u: adj[v]){
        prep(u); mx[v] = max(mx[v], mx[u]);
    }
    if(mx[v]) c[v] = c[edge[mx[v]]];
}
 
vector<int> vec;
vector<pii> block;
 
int bit[N], m;
 
void upd(int x, int y){
    for(; x <= m; x += x & (-x)) bit[x] += y;
}
 
int get(int x){
    int out = 0;
    for(; x; x -= x & (-x)) out += bit[x];
    return out;
}
 
ll solve(){
    vec.clear();
    for(auto i: block) vec.pb(i.F);
 
    sort(all(vec)); vec.resize(unique(all(vec)) - vec.begin());
    m = vec.size();
 
    int sum = 0; ll res = 0;
    for(auto [x, y]: block){
        int id = lower_bound(all(vec), x) - vec.begin() + 1;
        res += 1ll * y * (sum - get(id)); upd(id, y); sum += y;
    }
 
    for(auto [x, y]: block){
        int id = lower_bound(all(vec), x) - vec.begin() + 1; upd(id, -y);
    }
    return res;
}
 
int main(){
    fast_io;
 
    cin >> n;
 
    for(int i = 1; i <= n; i++) cin >> c[i];
 
    int u, v; edge.pb(1);
    for(int i = 1; i < n; i++){
        cin >> u >> v;
        adj[u].pb(v); edge.pb(v);
    }
 
    dfs(1);
 
    for(int i = 1; i < n; i++){
        block.clear(); 
        int tah = -1; v = edge[i];
        for(int j = i-1; j % sq != 0; j--){
            u = lca(v, edge[j]);
            if(h[u] > tah){
                block.pb({c[edge[j]], h[u] - tah});
                tah = h[u];
            }
        }
        vec.clear();
        while(h[v] - 1 > tah){
            v = par[v][0]; vec.pb(c[v]);
        }
        reverse(all(vec));
 
        for(int j: vec) block.pb({j, 1});
 
        cout << solve() << endl;
 
        if(i % sq == 0){
            fill(mx, mx + N, 0);
            for(int j = i; j > i - sq; j--) mx[edge[j]] = j;
            prep(1);
        }
    }
 
}

Compilation message

construction.cpp: In function 'll solve()':
construction.cpp:96:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   96 |     for(auto [x, y]: block){
      |              ^
construction.cpp:101:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  101 |     for(auto [x, y]: block){
      |              ^

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 3 ms 8692 KB Output is correct
5 Correct 6 ms 8792 KB Output is correct
6 Correct 5 ms 8540 KB Output is correct
7 Correct 4 ms 8692 KB Output is correct
8 Correct 2 ms 8540 KB Output is correct
9 Correct 2 ms 8540 KB Output is correct
10 Correct 2 ms 8540 KB Output is correct
11 Correct 3 ms 8536 KB Output is correct
12 Correct 5 ms 8536 KB Output is correct
13 Correct 3 ms 8536 KB Output is correct
14 Correct 3 ms 8540 KB Output is correct
15 Correct 3 ms 8540 KB Output is correct
16 Correct 4 ms 8672 KB Output is correct
17 Correct 3 ms 8540 KB Output is correct
18 Correct 3 ms 8540 KB Output is correct
19 Correct 4 ms 8540 KB Output is correct
20 Correct 5 ms 8752 KB Output is correct
21 Correct 4 ms 8540 KB Output is correct
22 Correct 4 ms 8540 KB Output is correct
23 Correct 4 ms 8692 KB Output is correct
24 Correct 4 ms 8540 KB Output is correct
25 Correct 4 ms 8540 KB Output is correct
26 Correct 2 ms 8540 KB Output is correct
27 Correct 3 ms 8700 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 3 ms 8700 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct
31 Correct 4 ms 8536 KB Output is correct
32 Correct 4 ms 8540 KB Output is correct
33 Correct 5 ms 8692 KB Output is correct
34 Correct 6 ms 8540 KB Output is correct
35 Correct 4 ms 8540 KB Output is correct
36 Correct 4 ms 8540 KB Output is correct
37 Correct 4 ms 8540 KB Output is correct
38 Correct 4 ms 8688 KB Output is correct
39 Correct 5 ms 8540 KB Output is correct
40 Correct 5 ms 8688 KB Output is correct
41 Correct 5 ms 8540 KB Output is correct
42 Correct 5 ms 8540 KB Output is correct
43 Correct 5 ms 8540 KB Output is correct
44 Correct 5 ms 8536 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 3 ms 8692 KB Output is correct
5 Correct 6 ms 8792 KB Output is correct
6 Correct 5 ms 8540 KB Output is correct
7 Correct 4 ms 8692 KB Output is correct
8 Correct 2 ms 8540 KB Output is correct
9 Correct 2 ms 8540 KB Output is correct
10 Correct 2 ms 8540 KB Output is correct
11 Correct 3 ms 8536 KB Output is correct
12 Correct 5 ms 8536 KB Output is correct
13 Correct 3 ms 8536 KB Output is correct
14 Correct 3 ms 8540 KB Output is correct
15 Correct 3 ms 8540 KB Output is correct
16 Correct 4 ms 8672 KB Output is correct
17 Correct 3 ms 8540 KB Output is correct
18 Correct 3 ms 8540 KB Output is correct
19 Correct 4 ms 8540 KB Output is correct
20 Correct 5 ms 8752 KB Output is correct
21 Correct 4 ms 8540 KB Output is correct
22 Correct 4 ms 8540 KB Output is correct
23 Correct 4 ms 8692 KB Output is correct
24 Correct 4 ms 8540 KB Output is correct
25 Correct 4 ms 8540 KB Output is correct
26 Correct 2 ms 8540 KB Output is correct
27 Correct 3 ms 8700 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 3 ms 8700 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct
31 Correct 4 ms 8536 KB Output is correct
32 Correct 4 ms 8540 KB Output is correct
33 Correct 5 ms 8692 KB Output is correct
34 Correct 6 ms 8540 KB Output is correct
35 Correct 4 ms 8540 KB Output is correct
36 Correct 4 ms 8540 KB Output is correct
37 Correct 4 ms 8540 KB Output is correct
38 Correct 4 ms 8688 KB Output is correct
39 Correct 5 ms 8540 KB Output is correct
40 Correct 5 ms 8688 KB Output is correct
41 Correct 5 ms 8540 KB Output is correct
42 Correct 5 ms 8540 KB Output is correct
43 Correct 5 ms 8540 KB Output is correct
44 Correct 5 ms 8536 KB Output is correct
45 Correct 8 ms 8540 KB Output is correct
46 Correct 30 ms 8540 KB Output is correct
47 Correct 31 ms 8540 KB Output is correct
48 Correct 30 ms 8540 KB Output is correct
49 Correct 12 ms 8796 KB Output is correct
50 Correct 11 ms 8796 KB Output is correct
51 Correct 12 ms 8956 KB Output is correct
52 Correct 17 ms 8792 KB Output is correct
53 Correct 17 ms 8792 KB Output is correct
54 Correct 17 ms 8796 KB Output is correct
55 Correct 17 ms 8796 KB Output is correct
56 Correct 16 ms 8868 KB Output is correct
57 Correct 21 ms 8760 KB Output is correct
58 Correct 22 ms 8536 KB Output is correct
59 Correct 24 ms 8540 KB Output is correct
60 Correct 26 ms 8804 KB Output is correct
61 Correct 27 ms 8796 KB Output is correct
62 Correct 26 ms 8868 KB Output is correct
63 Correct 27 ms 8796 KB Output is correct
64 Correct 30 ms 8540 KB Output is correct
65 Correct 30 ms 8540 KB Output is correct
66 Correct 30 ms 8540 KB Output is correct
67 Correct 29 ms 8776 KB Output is correct
68 Correct 12 ms 9024 KB Output is correct
69 Correct 16 ms 8796 KB Output is correct
70 Correct 17 ms 8796 KB Output is correct
71 Correct 18 ms 8796 KB Output is correct
72 Correct 21 ms 8760 KB Output is correct
73 Correct 22 ms 8768 KB Output is correct
74 Correct 27 ms 8864 KB Output is correct
75 Correct 16 ms 8796 KB Output is correct
76 Correct 18 ms 8796 KB Output is correct
77 Correct 16 ms 8780 KB Output is correct
78 Correct 16 ms 8812 KB Output is correct
79 Correct 19 ms 8792 KB Output is correct
80 Correct 16 ms 8540 KB Output is correct
81 Correct 29 ms 8796 KB Output is correct
82 Correct 31 ms 8788 KB Output is correct
83 Correct 30 ms 8796 KB Output is correct
84 Correct 29 ms 8812 KB Output is correct
85 Correct 31 ms 8800 KB Output is correct
86 Correct 29 ms 8788 KB Output is correct

Subtask #3
0 / 84.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 3 ms 8692 KB Output is correct
5 Correct 6 ms 8792 KB Output is correct
6 Correct 5 ms 8540 KB Output is correct
7 Correct 4 ms 8692 KB Output is correct
8 Correct 2 ms 8540 KB Output is correct
9 Correct 2 ms 8540 KB Output is correct
10 Correct 2 ms 8540 KB Output is correct
11 Correct 3 ms 8536 KB Output is correct
12 Correct 5 ms 8536 KB Output is correct
13 Correct 3 ms 8536 KB Output is correct
14 Correct 3 ms 8540 KB Output is correct
15 Correct 3 ms 8540 KB Output is correct
16 Correct 4 ms 8672 KB Output is correct
17 Correct 3 ms 8540 KB Output is correct
18 Correct 3 ms 8540 KB Output is correct
19 Correct 4 ms 8540 KB Output is correct
20 Correct 5 ms 8752 KB Output is correct
21 Correct 4 ms 8540 KB Output is correct
22 Correct 4 ms 8540 KB Output is correct
23 Correct 4 ms 8692 KB Output is correct
24 Correct 4 ms 8540 KB Output is correct
25 Correct 4 ms 8540 KB Output is correct
26 Correct 2 ms 8540 KB Output is correct
27 Correct 3 ms 8700 KB Output is correct
28 Correct 3 ms 8540 KB Output is correct
29 Correct 3 ms 8700 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct
31 Correct 4 ms 8536 KB Output is correct
32 Correct 4 ms 8540 KB Output is correct
33 Correct 5 ms 8692 KB Output is correct
34 Correct 6 ms 8540 KB Output is correct
35 Correct 4 ms 8540 KB Output is correct
36 Correct 4 ms 8540 KB Output is correct
37 Correct 4 ms 8540 KB Output is correct
38 Correct 4 ms 8688 KB Output is correct
39 Correct 5 ms 8540 KB Output is correct
40 Correct 5 ms 8688 KB Output is correct
41 Correct 5 ms 8540 KB Output is correct
42 Correct 5 ms 8540 KB Output is correct
43 Correct 5 ms 8540 KB Output is correct
44 Correct 5 ms 8536 KB Output is correct
45 Correct 8 ms 8540 KB Output is correct
46 Correct 30 ms 8540 KB Output is correct
47 Correct 31 ms 8540 KB Output is correct
48 Correct 30 ms 8540 KB Output is correct
49 Correct 12 ms 8796 KB Output is correct
50 Correct 11 ms 8796 KB Output is correct
51 Correct 12 ms 8956 KB Output is correct
52 Correct 17 ms 8792 KB Output is correct
53 Correct 17 ms 8792 KB Output is correct
54 Correct 17 ms 8796 KB Output is correct
55 Correct 17 ms 8796 KB Output is correct
56 Correct 16 ms 8868 KB Output is correct
57 Correct 21 ms 8760 KB Output is correct
58 Correct 22 ms 8536 KB Output is correct
59 Correct 24 ms 8540 KB Output is correct
60 Correct 26 ms 8804 KB Output is correct
61 Correct 27 ms 8796 KB Output is correct
62 Correct 26 ms 8868 KB Output is correct
63 Correct 27 ms 8796 KB Output is correct
64 Correct 30 ms 8540 KB Output is correct
65 Correct 30 ms 8540 KB Output is correct
66 Correct 30 ms 8540 KB Output is correct
67 Correct 29 ms 8776 KB Output is correct
68 Correct 12 ms 9024 KB Output is correct
69 Correct 16 ms 8796 KB Output is correct
70 Correct 17 ms 8796 KB Output is correct
71 Correct 18 ms 8796 KB Output is correct
72 Correct 21 ms 8760 KB Output is correct
73 Correct 22 ms 8768 KB Output is correct
74 Correct 27 ms 8864 KB Output is correct
75 Correct 16 ms 8796 KB Output is correct
76 Correct 18 ms 8796 KB Output is correct
77 Correct 16 ms 8780 KB Output is correct
78 Correct 16 ms 8812 KB Output is correct
79 Correct 19 ms 8792 KB Output is correct
80 Correct 16 ms 8540 KB Output is correct
81 Correct 29 ms 8796 KB Output is correct
82 Correct 31 ms 8788 KB Output is correct
83 Correct 30 ms 8796 KB Output is correct
84 Correct 29 ms 8812 KB Output is correct
85 Correct 31 ms 8800 KB Output is correct
86 Correct 29 ms 8788 KB Output is correct
87 Correct 78 ms 8796 KB Output is correct
88 Correct 287 ms 13276 KB Output is correct
89 Correct 1627 ms 21856 KB Output is correct
90 Correct 1552 ms 21960 KB Output is correct
91 Correct 1589 ms 21760 KB Output is correct
92 Execution timed out 2021 ms 28116 KB Time limit exceeded
93 Halted 0 ms 0 KB -