oj.uz

Submission #747061

# Submission time Handle Problem Language Result Execution time Memory
747061 2023-05-23T14:40:44 Z Sami_Massah Construction of Highway (JOI18_construction) C++17
16 / 100
 2000 ms 33272 KB 
#include <bits/stdc++.h>
using namespace std;



const int maxn = 2e5 + 12, lg = 17;
int n, s, cnt, L[maxn * 4], R[maxn * 4], sum[maxn * 4], par[maxn][lg], mx[maxn * 4], st[maxn], en[maxn], h[maxn], U[maxn], V[maxn], bcnv[maxn], c[maxn];
vector <int> conn[maxn], pos;
vector <tuple<int, int, int>> seg;
bitset <maxn> marked;
map <int, int> cnv;
void make_tree(int l, int r, int ind){
    int mid = (l + r) / 2;
    L[ind] = l;
    R[ind] = r;
    if(l == r)
        return;
    make_tree(l, mid, ind * 2);
    make_tree(mid + 1, r, ind * 2 + 1);
}
void update_tree_sum(int l, int r, int u, int k, bool add = 0){
    if(r < L[u] || R[u] < l)
        return;
    if(l <= L[u] && R[u] <= r){
        if(add == 0)
            sum[u] = k;
        else
            sum[u] += k;
        return;
    }
    update_tree_sum(l, r, u * 2, k, add);
    update_tree_sum(l, r, u * 2 + 1, k, add);
    sum[u] = (sum[u * 2] + sum[u * 2 + 1]);
}
void update_tree_mx(int l, int r, int u, int k){
    if(r < L[u] || R[u] < l)
        return;
    if(l <= L[u] && R[u] <= r){
        mx[u] = k;
        return;
    }
    update_tree_mx(l, r, u * 2, k);
    update_tree_mx(l, r, u * 2 + 1, k);
    mx[u] = max(mx[u * 2], mx[u * 2 + 1]);

}
int get_sum(int l, int r, int u){
    if(r < L[u] || R[u] < l)
        return 0;
    if(l <= L[u] && R[u] <= r)
        return sum[u];
    return get_sum(l, r, u * 2) + get_sum(l, r, u * 2 + 1);
}
int get_max(int l, int r, int u){
    if(r < L[u] || R[u] < l)
        return 0;
    if(l <= L[u] && R[u] <= r)
        return mx[u];

    return max(get_max(l, r, u * 2), get_max(l, r, u * 2 + 1));
}
int kpar(int u, int k){
    for(int i = 0; i < lg; i++)
        if((k >> i) & 1)
            u = par[u][i];
    return u;
}
int lca(int a, int b){
    if(h[a] < h[b])
        swap(a, b);
 //   cout << a << '-' << b << endl;
   // cout << h[a] << ' ' << h[b] << endl;
    a = kpar(a, h[a] - h[b]);
    if(a == b)
        return a;
    //cout << a << '-' << b << endl;
    for(int i = lg - 1; i >= 0; i--)
        if(par[a][i] != par[b][i]){
            a = par[a][i];
            b = par[b][i];
        }
    return par[a][0];
}
void dfs_set(int u){
    marked[u] = 1;
    for(int i = 1; i < lg; i++)
        par[u][i] = par[par[u][i - 1]][i - 1];
    st[u] = s;
    s += 1;
    for(int v: conn[u])
        if(!marked[v]){
            h[v] = h[u] + 1;
        //    cout << u << ' ' << v << ' ' << h[v] << endl;
            par[v][0] = u;
            dfs_set(v);
        }
    en[u] = s - 1;
}
void get_seg(int u){
    seg.clear();
    int now = 1, res = -1;

    while(res != u){
       // cout << st[now] << ' ' << en[now] << endl;
        res = get_max(st[now], en[now], 1);
    //    cout << res << endl;
        res = bcnv[res];
      //  cout << res << endl;
        //cout << u << ' ' << res << endl;
        int nc = c[res];
        res = lca(res, u);
    //    cout << res << endl;
       // cout << now << ' ' << res << endl;

        seg.push_back(make_tuple(now, res, nc));
        if(res != u)
            now = kpar(u, h[u] - h[res] - 1);
        //cout << now << endl;

    }
    return;
}
long long get_ans(){
    long long nat = 0;
    for(auto i: seg){
     //   cout << get<0>(i) << ' ' << get<1>(i) << ' ' << get<2>(i) << endl;
        cnt += 1;
        int len = h[get<1>(i)] - h[get<0>(i)] + 1;
        nat += get_sum(get<2>(i) + 1, n, 1) * len;
        update_tree_sum(get<2>(i), get<2>(i), 1, len, 1);
    }
    for(auto i: seg)
        update_tree_sum(get<2>(i), get<2>(i), 1, 0);
    return nat;
}
int main(){
    ios_base::sync_with_stdio(false), cin.tie(0);
    cin >> n;
    for(int i = 0; i < n; i++){
        cin >> c[i + 1];
        pos.push_back(c[i + 1]);
        }
    sort(pos.begin(), pos.end());
    int now = 1;
    for(int i: pos)
        if(cnv[i] == 0){
            cnv[i] = now;
            now += 1;
        }
    for(int i = 1; i <= n; i++)
        c[i] = cnv[c[i]];
    for(int i = 0; i < n - 1; i++){
        cin >> U[i] >> V[i];

        conn[U[i]].push_back(V[i]);
        conn[V[i]].push_back(U[i]);
    }

    dfs_set(1);
    make_tree(0, n, 1);
    update_tree_mx(st[1], st[1], 1, 1);

    bcnv[1] = 1;

    for(int i = 0; i < n - 1; i++){
        long long ans = 0;
        get_seg(U[i]);
        ans += get_ans();
       // cout << st[V[i]] << endl;
        update_tree_mx(st[V[i]], st[V[i]], 1, i + 2);
      //  cout << get_max(0, 4, 1) << endl;
        bcnv[i + 2] = V[i];
        cout << ans << "\n";
  //      cout << endl;
       // cout << endl;
        //if(i == 2)
          //  return 0;
        if(cnt > 18 * n)
            cout << (10 / 0) << endl;
    }






}

Compilation message

construction.cpp: In function 'int main()':
construction.cpp:179:25: warning: division by zero [-Wdiv-by-zero]
  179 |             cout << (10 / 0) << endl;
      |                      ~~~^~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 3 ms 5076 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 4 ms 5196 KB Output is correct
6 Correct 4 ms 5076 KB Output is correct
7 Correct 4 ms 5076 KB Output is correct
8 Correct 4 ms 5204 KB Output is correct
9 Correct 3 ms 5204 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 3 ms 5204 KB Output is correct
12 Correct 3 ms 5204 KB Output is correct
13 Correct 3 ms 5204 KB Output is correct
14 Correct 4 ms 5204 KB Output is correct
15 Correct 6 ms 5204 KB Output is correct
16 Correct 6 ms 5204 KB Output is correct
17 Correct 6 ms 5196 KB Output is correct
18 Correct 6 ms 5076 KB Output is correct
19 Correct 5 ms 5208 KB Output is correct
20 Correct 4 ms 5204 KB Output is correct
21 Correct 4 ms 5204 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 4 ms 5076 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 4 ms 5076 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 6 ms 5204 KB Output is correct
28 Correct 3 ms 5076 KB Output is correct
29 Correct 4 ms 5076 KB Output is correct
30 Correct 5 ms 5204 KB Output is correct
31 Correct 5 ms 5076 KB Output is correct
32 Correct 3 ms 5144 KB Output is correct
33 Correct 4 ms 5204 KB Output is correct
34 Correct 5 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5204 KB Output is correct
40 Correct 3 ms 5076 KB Output is correct
41 Correct 3 ms 5076 KB Output is correct
42 Correct 4 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 5 ms 5076 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 3 ms 5076 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 4 ms 5196 KB Output is correct
6 Correct 4 ms 5076 KB Output is correct
7 Correct 4 ms 5076 KB Output is correct
8 Correct 4 ms 5204 KB Output is correct
9 Correct 3 ms 5204 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 3 ms 5204 KB Output is correct
12 Correct 3 ms 5204 KB Output is correct
13 Correct 3 ms 5204 KB Output is correct
14 Correct 4 ms 5204 KB Output is correct
15 Correct 6 ms 5204 KB Output is correct
16 Correct 6 ms 5204 KB Output is correct
17 Correct 6 ms 5196 KB Output is correct
18 Correct 6 ms 5076 KB Output is correct
19 Correct 5 ms 5208 KB Output is correct
20 Correct 4 ms 5204 KB Output is correct
21 Correct 4 ms 5204 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 4 ms 5076 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 4 ms 5076 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 6 ms 5204 KB Output is correct
28 Correct 3 ms 5076 KB Output is correct
29 Correct 4 ms 5076 KB Output is correct
30 Correct 5 ms 5204 KB Output is correct
31 Correct 5 ms 5076 KB Output is correct
32 Correct 3 ms 5144 KB Output is correct
33 Correct 4 ms 5204 KB Output is correct
34 Correct 5 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5204 KB Output is correct
40 Correct 3 ms 5076 KB Output is correct
41 Correct 3 ms 5076 KB Output is correct
42 Correct 4 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 5 ms 5076 KB Output is correct
45 Correct 6 ms 5204 KB Output is correct
46 Correct 18 ms 5920 KB Output is correct
47 Correct 19 ms 5932 KB Output is correct
48 Correct 18 ms 5844 KB Output is correct
49 Correct 9 ms 6100 KB Output is correct
50 Correct 9 ms 6100 KB Output is correct
51 Correct 10 ms 6100 KB Output is correct
52 Correct 11 ms 6008 KB Output is correct
53 Correct 12 ms 6100 KB Output is correct
54 Correct 12 ms 6040 KB Output is correct
55 Correct 10 ms 6036 KB Output is correct
56 Correct 10 ms 5972 KB Output is correct
57 Correct 30 ms 5916 KB Output is correct
58 Correct 33 ms 5924 KB Output is correct
59 Correct 34 ms 5944 KB Output is correct
60 Correct 39 ms 5844 KB Output is correct
61 Correct 13 ms 6020 KB Output is correct
62 Correct 11 ms 5972 KB Output is correct
63 Correct 11 ms 5972 KB Output is correct
64 Correct 15 ms 5716 KB Output is correct
65 Correct 19 ms 5716 KB Output is correct
66 Correct 17 ms 5716 KB Output is correct
67 Correct 23 ms 5804 KB Output is correct
68 Correct 9 ms 5908 KB Output is correct
69 Correct 11 ms 6052 KB Output is correct
70 Correct 9 ms 5844 KB Output is correct
71 Correct 8 ms 5864 KB Output is correct
72 Correct 29 ms 5932 KB Output is correct
73 Correct 28 ms 5720 KB Output is correct
74 Correct 10 ms 5844 KB Output is correct
75 Correct 11 ms 5988 KB Output is correct
76 Correct 10 ms 5972 KB Output is correct
77 Correct 10 ms 5972 KB Output is correct
78 Correct 8 ms 5716 KB Output is correct
79 Correct 10 ms 5716 KB Output is correct
80 Correct 8 ms 5744 KB Output is correct
81 Correct 12 ms 5964 KB Output is correct
82 Correct 12 ms 5972 KB Output is correct
83 Correct 14 ms 5960 KB Output is correct
84 Correct 10 ms 5716 KB Output is correct
85 Correct 11 ms 5716 KB Output is correct
86 Correct 10 ms 5716 KB Output is correct

Subtask #3
0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5076 KB Output is correct
2 Correct 3 ms 5076 KB Output is correct
3 Correct 3 ms 5076 KB Output is correct
4 Correct 3 ms 5076 KB Output is correct
5 Correct 4 ms 5196 KB Output is correct
6 Correct 4 ms 5076 KB Output is correct
7 Correct 4 ms 5076 KB Output is correct
8 Correct 4 ms 5204 KB Output is correct
9 Correct 3 ms 5204 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 3 ms 5204 KB Output is correct
12 Correct 3 ms 5204 KB Output is correct
13 Correct 3 ms 5204 KB Output is correct
14 Correct 4 ms 5204 KB Output is correct
15 Correct 6 ms 5204 KB Output is correct
16 Correct 6 ms 5204 KB Output is correct
17 Correct 6 ms 5196 KB Output is correct
18 Correct 6 ms 5076 KB Output is correct
19 Correct 5 ms 5208 KB Output is correct
20 Correct 4 ms 5204 KB Output is correct
21 Correct 4 ms 5204 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 4 ms 5076 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 4 ms 5076 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 6 ms 5204 KB Output is correct
28 Correct 3 ms 5076 KB Output is correct
29 Correct 4 ms 5076 KB Output is correct
30 Correct 5 ms 5204 KB Output is correct
31 Correct 5 ms 5076 KB Output is correct
32 Correct 3 ms 5144 KB Output is correct
33 Correct 4 ms 5204 KB Output is correct
34 Correct 5 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5204 KB Output is correct
40 Correct 3 ms 5076 KB Output is correct
41 Correct 3 ms 5076 KB Output is correct
42 Correct 4 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 5 ms 5076 KB Output is correct
45 Correct 6 ms 5204 KB Output is correct
46 Correct 18 ms 5920 KB Output is correct
47 Correct 19 ms 5932 KB Output is correct
48 Correct 18 ms 5844 KB Output is correct
49 Correct 9 ms 6100 KB Output is correct
50 Correct 9 ms 6100 KB Output is correct
51 Correct 10 ms 6100 KB Output is correct
52 Correct 11 ms 6008 KB Output is correct
53 Correct 12 ms 6100 KB Output is correct
54 Correct 12 ms 6040 KB Output is correct
55 Correct 10 ms 6036 KB Output is correct
56 Correct 10 ms 5972 KB Output is correct
57 Correct 30 ms 5916 KB Output is correct
58 Correct 33 ms 5924 KB Output is correct
59 Correct 34 ms 5944 KB Output is correct
60 Correct 39 ms 5844 KB Output is correct
61 Correct 13 ms 6020 KB Output is correct
62 Correct 11 ms 5972 KB Output is correct
63 Correct 11 ms 5972 KB Output is correct
64 Correct 15 ms 5716 KB Output is correct
65 Correct 19 ms 5716 KB Output is correct
66 Correct 17 ms 5716 KB Output is correct
67 Correct 23 ms 5804 KB Output is correct
68 Correct 9 ms 5908 KB Output is correct
69 Correct 11 ms 6052 KB Output is correct
70 Correct 9 ms 5844 KB Output is correct
71 Correct 8 ms 5864 KB Output is correct
72 Correct 29 ms 5932 KB Output is correct
73 Correct 28 ms 5720 KB Output is correct
74 Correct 10 ms 5844 KB Output is correct
75 Correct 11 ms 5988 KB Output is correct
76 Correct 10 ms 5972 KB Output is correct
77 Correct 10 ms 5972 KB Output is correct
78 Correct 8 ms 5716 KB Output is correct
79 Correct 10 ms 5716 KB Output is correct
80 Correct 8 ms 5744 KB Output is correct
81 Correct 12 ms 5964 KB Output is correct
82 Correct 12 ms 5972 KB Output is correct
83 Correct 14 ms 5960 KB Output is correct
84 Correct 10 ms 5716 KB Output is correct
85 Correct 11 ms 5716 KB Output is correct
86 Correct 10 ms 5716 KB Output is correct
87 Correct 57 ms 7372 KB Output is correct
88 Correct 222 ms 11640 KB Output is correct
89 Correct 855 ms 27112 KB Output is correct
90 Correct 1006 ms 27272 KB Output is correct
91 Correct 961 ms 27160 KB Output is correct
92 Correct 249 ms 33272 KB Output is correct
93 Correct 241 ms 33164 KB Output is correct
94 Correct 238 ms 33172 KB Output is correct
95 Correct 299 ms 31260 KB Output is correct
96 Correct 322 ms 31388 KB Output is correct
97 Correct 303 ms 31356 KB Output is correct
98 Correct 364 ms 31308 KB Output is correct
99 Correct 317 ms 30340 KB Output is correct
100 Correct 1719 ms 27192 KB Output is correct
101 Execution timed out 2064 ms 27080 KB Time limit exceeded
102 Halted 0 ms 0 KB -