oj.uz

Submission #746957

# Submission time Handle Problem Language Result Execution time Memory
746957 2023-05-23T09:35:03 Z Sami_Massah Construction of Highway (JOI18_construction) C++17
16 / 100
 1249 ms 55996 KB 
#include <bits/stdc++.h>
using namespace std;
 
 
 
const int maxn = 2e5 + 12, lg = 20;
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 > 10 * 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 3 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 4 ms 5076 KB Output is correct
5 Correct 4 ms 5204 KB Output is correct
6 Correct 4 ms 5204 KB Output is correct
7 Correct 6 ms 5204 KB Output is correct
8 Correct 4 ms 5204 KB Output is correct
9 Correct 4 ms 5204 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 4 ms 5204 KB Output is correct
12 Correct 4 ms 5204 KB Output is correct
13 Correct 4 ms 5204 KB Output is correct
14 Correct 4 ms 5204 KB Output is correct
15 Correct 5 ms 5204 KB Output is correct
16 Correct 5 ms 5204 KB Output is correct
17 Correct 5 ms 5204 KB Output is correct
18 Correct 7 ms 5208 KB Output is correct
19 Correct 5 ms 5204 KB Output is correct
20 Correct 5 ms 5204 KB Output is correct
21 Correct 4 ms 5204 KB Output is correct
22 Correct 4 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 3 ms 5204 KB Output is correct
27 Correct 4 ms 5220 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 5 ms 5076 KB Output is correct
30 Correct 6 ms 5200 KB Output is correct
31 Correct 6 ms 5076 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5204 KB Output is correct
34 Correct 4 ms 5204 KB Output is correct
35 Correct 3 ms 5172 KB Output is correct
36 Correct 5 ms 5156 KB Output is correct
37 Correct 5 ms 5076 KB Output is correct
38 Correct 4 ms 5076 KB Output is correct
39 Correct 6 ms 5204 KB Output is correct
40 Correct 4 ms 5204 KB Output is correct
41 Correct 4 ms 5204 KB Output is correct
42 Correct 4 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5068 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 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 4 ms 5076 KB Output is correct
5 Correct 4 ms 5204 KB Output is correct
6 Correct 4 ms 5204 KB Output is correct
7 Correct 6 ms 5204 KB Output is correct
8 Correct 4 ms 5204 KB Output is correct
9 Correct 4 ms 5204 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 4 ms 5204 KB Output is correct
12 Correct 4 ms 5204 KB Output is correct
13 Correct 4 ms 5204 KB Output is correct
14 Correct 4 ms 5204 KB Output is correct
15 Correct 5 ms 5204 KB Output is correct
16 Correct 5 ms 5204 KB Output is correct
17 Correct 5 ms 5204 KB Output is correct
18 Correct 7 ms 5208 KB Output is correct
19 Correct 5 ms 5204 KB Output is correct
20 Correct 5 ms 5204 KB Output is correct
21 Correct 4 ms 5204 KB Output is correct
22 Correct 4 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 3 ms 5204 KB Output is correct
27 Correct 4 ms 5220 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 5 ms 5076 KB Output is correct
30 Correct 6 ms 5200 KB Output is correct
31 Correct 6 ms 5076 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5204 KB Output is correct
34 Correct 4 ms 5204 KB Output is correct
35 Correct 3 ms 5172 KB Output is correct
36 Correct 5 ms 5156 KB Output is correct
37 Correct 5 ms 5076 KB Output is correct
38 Correct 4 ms 5076 KB Output is correct
39 Correct 6 ms 5204 KB Output is correct
40 Correct 4 ms 5204 KB Output is correct
41 Correct 4 ms 5204 KB Output is correct
42 Correct 4 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5068 KB Output is correct
45 Correct 5 ms 5204 KB Output is correct
46 Correct 19 ms 5984 KB Output is correct
47 Correct 20 ms 5992 KB Output is correct
48 Correct 19 ms 5980 KB Output is correct
49 Correct 12 ms 6120 KB Output is correct
50 Correct 10 ms 6228 KB Output is correct
51 Correct 10 ms 6228 KB Output is correct
52 Correct 13 ms 6100 KB Output is correct
53 Correct 11 ms 6100 KB Output is correct
54 Correct 11 ms 6128 KB Output is correct
55 Correct 11 ms 6100 KB Output is correct
56 Correct 10 ms 6004 KB Output is correct
57 Correct 30 ms 5968 KB Output is correct
58 Correct 36 ms 5968 KB Output is correct
59 Correct 36 ms 6092 KB Output is correct
60 Correct 47 ms 5972 KB Output is correct
61 Correct 12 ms 6100 KB Output is correct
62 Correct 11 ms 6100 KB Output is correct
63 Correct 15 ms 6100 KB Output is correct
64 Correct 15 ms 5776 KB Output is correct
65 Correct 15 ms 5716 KB Output is correct
66 Correct 18 ms 5716 KB Output is correct
67 Correct 19 ms 5844 KB Output is correct
68 Correct 7 ms 5972 KB Output is correct
69 Correct 9 ms 6100 KB Output is correct
70 Correct 11 ms 5876 KB Output is correct
71 Correct 12 ms 5900 KB Output is correct
72 Correct 38 ms 5972 KB Output is correct
73 Correct 33 ms 5716 KB Output is correct
74 Correct 11 ms 5844 KB Output is correct
75 Correct 12 ms 5972 KB Output is correct
76 Correct 11 ms 5972 KB Output is correct
77 Correct 10 ms 5972 KB Output is correct
78 Correct 10 ms 5844 KB Output is correct
79 Correct 9 ms 5780 KB Output is correct
80 Correct 8 ms 5716 KB Output is correct
81 Correct 12 ms 5980 KB Output is correct
82 Correct 16 ms 5972 KB Output is correct
83 Correct 13 ms 6128 KB Output is correct
84 Correct 11 ms 5844 KB Output is correct
85 Correct 11 ms 5716 KB Output is correct
86 Correct 13 ms 5844 KB Output is correct

Subtask #3
0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 3 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 4 ms 5076 KB Output is correct
5 Correct 4 ms 5204 KB Output is correct
6 Correct 4 ms 5204 KB Output is correct
7 Correct 6 ms 5204 KB Output is correct
8 Correct 4 ms 5204 KB Output is correct
9 Correct 4 ms 5204 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 4 ms 5204 KB Output is correct
12 Correct 4 ms 5204 KB Output is correct
13 Correct 4 ms 5204 KB Output is correct
14 Correct 4 ms 5204 KB Output is correct
15 Correct 5 ms 5204 KB Output is correct
16 Correct 5 ms 5204 KB Output is correct
17 Correct 5 ms 5204 KB Output is correct
18 Correct 7 ms 5208 KB Output is correct
19 Correct 5 ms 5204 KB Output is correct
20 Correct 5 ms 5204 KB Output is correct
21 Correct 4 ms 5204 KB Output is correct
22 Correct 4 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 3 ms 5204 KB Output is correct
27 Correct 4 ms 5220 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 5 ms 5076 KB Output is correct
30 Correct 6 ms 5200 KB Output is correct
31 Correct 6 ms 5076 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 4 ms 5204 KB Output is correct
34 Correct 4 ms 5204 KB Output is correct
35 Correct 3 ms 5172 KB Output is correct
36 Correct 5 ms 5156 KB Output is correct
37 Correct 5 ms 5076 KB Output is correct
38 Correct 4 ms 5076 KB Output is correct
39 Correct 6 ms 5204 KB Output is correct
40 Correct 4 ms 5204 KB Output is correct
41 Correct 4 ms 5204 KB Output is correct
42 Correct 4 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5068 KB Output is correct
45 Correct 5 ms 5204 KB Output is correct
46 Correct 19 ms 5984 KB Output is correct
47 Correct 20 ms 5992 KB Output is correct
48 Correct 19 ms 5980 KB Output is correct
49 Correct 12 ms 6120 KB Output is correct
50 Correct 10 ms 6228 KB Output is correct
51 Correct 10 ms 6228 KB Output is correct
52 Correct 13 ms 6100 KB Output is correct
53 Correct 11 ms 6100 KB Output is correct
54 Correct 11 ms 6128 KB Output is correct
55 Correct 11 ms 6100 KB Output is correct
56 Correct 10 ms 6004 KB Output is correct
57 Correct 30 ms 5968 KB Output is correct
58 Correct 36 ms 5968 KB Output is correct
59 Correct 36 ms 6092 KB Output is correct
60 Correct 47 ms 5972 KB Output is correct
61 Correct 12 ms 6100 KB Output is correct
62 Correct 11 ms 6100 KB Output is correct
63 Correct 15 ms 6100 KB Output is correct
64 Correct 15 ms 5776 KB Output is correct
65 Correct 15 ms 5716 KB Output is correct
66 Correct 18 ms 5716 KB Output is correct
67 Correct 19 ms 5844 KB Output is correct
68 Correct 7 ms 5972 KB Output is correct
69 Correct 9 ms 6100 KB Output is correct
70 Correct 11 ms 5876 KB Output is correct
71 Correct 12 ms 5900 KB Output is correct
72 Correct 38 ms 5972 KB Output is correct
73 Correct 33 ms 5716 KB Output is correct
74 Correct 11 ms 5844 KB Output is correct
75 Correct 12 ms 5972 KB Output is correct
76 Correct 11 ms 5972 KB Output is correct
77 Correct 10 ms 5972 KB Output is correct
78 Correct 10 ms 5844 KB Output is correct
79 Correct 9 ms 5780 KB Output is correct
80 Correct 8 ms 5716 KB Output is correct
81 Correct 12 ms 5980 KB Output is correct
82 Correct 16 ms 5972 KB Output is correct
83 Correct 13 ms 6128 KB Output is correct
84 Correct 11 ms 5844 KB Output is correct
85 Correct 11 ms 5716 KB Output is correct
86 Correct 13 ms 5844 KB Output is correct
87 Correct 57 ms 7492 KB Output is correct
88 Correct 204 ms 11796 KB Output is correct
89 Correct 1004 ms 28436 KB Output is correct
90 Correct 966 ms 28420 KB Output is correct
91 Correct 1008 ms 28360 KB Output is correct
92 Correct 244 ms 34376 KB Output is correct
93 Correct 251 ms 34360 KB Output is correct
94 Correct 253 ms 34432 KB Output is correct
95 Correct 286 ms 32628 KB Output is correct
96 Correct 355 ms 32392 KB Output is correct
97 Correct 320 ms 32512 KB Output is correct
98 Correct 316 ms 32392 KB Output is correct
99 Correct 336 ms 31396 KB Output is correct
100 Runtime error 1249 ms 55996 KB Execution killed with signal 4
101 Halted 0 ms 0 KB -