oj.uz

Submission #529042

# Submission time Handle Problem Language Result Execution time Memory
529042 2022-02-22T02:56:25 Z wiwiho Construction of Highway (JOI18_construction) C++14
16 / 100
 2000 ms 12184 KB 
#include<bits/stdc++.h>

#define printv(a, b) { \
    for(auto pv : a) b << pv << " "; \
    b << "\n"; \
}
#define eb emplace_back
#define pob pop_back()
#define iter(a) a.begin(), a.end()
#define lsort(a) sort(iter(a))
#define uni(a) a.resize(unique(iter(a)) - a.begin())

using namespace std;

typedef long long ll;

const ll MOD = 1000000007;

#define lc (2 * id + 1)
#define rc (2 * id + 2)

int n;
vector<int> c, tme;
vector<vector<int>> g;
vector<int> pr;
vector<int> in, out, eu;
int ts = 0;

void init(){
    g.resize(n + 1);
    pr.resize(n + 1);
    c.resize(n + 1);
    tme.resize(n + 1);
    in.resize(n + 1);
    out.resize(n + 1);
    eu.resize(n + 1);
}

struct SegmentTree{
    vector<int> st;

    int argmax(int a, int b){
        if(tme[a] >= tme[b]) return a;
        else return b;
    }

    void pull(int id){
        st[id] = argmax(st[lc], st[rc]);
    }
    
    void build(int L, int R, int id){
        if(L == R){
            st[id] = L;
            return;
        }
        int M = (L + R) / 2;
        build(L, M, lc);
        build(M + 1, R, rc);
        pull(id);
    }

    void init(){
        st.resize(4 * n);
    }

    void upd(int x, int L = 1, int R = n, int id = 0){
        if(L == R) return;
        int M = (L + R) / 2;
        if(x <= M) upd(x, L, M, lc);
        else upd(x, M + 1, R, rc);
        pull(id);
    }

    int query(int l, int r, int L = 1, int R = n, int id = 0){
        if(l <= L && R <= r) return st[id];
        int M = (L + R) / 2;
        if(r <= M) return query(l, r, L, M, lc);
        else if(l > M) return query(l, r, M + 1, R, rc);
        else return argmax(query(l, r, L, M, lc), query(l, r, M + 1, R, rc));
    }
};

int lowbit(int x){
    return x & -x;
}

struct BIT{
    vector<ll> bit;
    void init(){
        bit.resize(n + 1);
    }
    void modify(int x, ll v){
        for(; x < bit.size(); x += lowbit(x)) bit[x] += v;
    }
    ll query(int x){
        ll ans = 0;
        for(; x > 0; x -= lowbit(x)) ans += bit[x];
        return ans;
    }
};

void dfs(int now){
    in[now] = ++ts;
    eu[ts] = now;
    for(int i : g[now]) dfs(i);
    out[now] = ts;
}

SegmentTree st;
int getv(int v){
    int pos = st.query(in[v], out[v]);
    //cerr << "getv " << v << " " << pos << "\n";
    return c[eu[pos]];
}

ll calc(int v){
    //cerr << "calc " << v << "\n";
    vector<int> path;
    v = pr[v];
    while(true){
        path.eb(v);
        if(v == 1) break;
        v = pr[v];
    }
    //printv(path, cerr);

    BIT bit;
    bit.init();
    ll ans = 0;
    reverse(iter(path));
    for(int i : path){
        int cv = getv(i);
        ans += bit.query(n) - bit.query(cv);
        //cerr << "cv " << i << " " << cv << "\n";
        bit.modify(cv, 1);
    }

    //cerr << "ok " << ans << "\n";
    return ans;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cerr.tie(0);

    cin >> n;
    init();

    for(int i = 1; i <= n; i++){
        cin >> c[i];
    }
    vector<int> tmp = c;
    lsort(tmp);
    uni(tmp);
    for(int i = 1; i <= n; i++){
        c[i] = lower_bound(iter(tmp), c[i]) - tmp.begin();
    }
    //printv(c, cerr);

    vector<int> qry(n + 1);
    for(int i = 2; i <= n; i++){
        int u, v;
        cin >> u >> v;
        g[u].eb(v);
        pr[v] = u;
        qry[i] = v;
    }

    dfs(1);

    st.init();
    st.build(1, n, 0);

    for(int i = 2; i <= n; i++){
        int now = qry[i];
        cout << calc(now) << "\n";
        tme[in[now]] = i;
        st.upd(in[now]);
    }

    return 0;
}

Compilation message

construction.cpp: In member function 'void BIT::modify(int, ll)':
construction.cpp:93:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |         for(; x < bit.size(); x += lowbit(x)) bit[x] += v;
      |               ~~^~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 10 ms 332 KB Output is correct
9 Correct 10 ms 396 KB Output is correct
10 Correct 10 ms 332 KB Output is correct
11 Correct 7 ms 324 KB Output is correct
12 Correct 7 ms 372 KB Output is correct
13 Correct 7 ms 332 KB Output is correct
14 Correct 7 ms 316 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 1 ms 316 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 8 ms 372 KB Output is correct
20 Correct 8 ms 332 KB Output is correct
21 Correct 10 ms 376 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 2 ms 308 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 9 ms 344 KB Output is correct
27 Correct 7 ms 368 KB Output is correct
28 Correct 7 ms 372 KB Output is correct
29 Correct 7 ms 308 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 308 KB Output is correct
32 Correct 7 ms 332 KB Output is correct
33 Correct 5 ms 332 KB Output is correct
34 Correct 3 ms 332 KB Output is correct
35 Correct 2 ms 312 KB Output is correct
36 Correct 4 ms 332 KB Output is correct
37 Correct 4 ms 320 KB Output is correct
38 Correct 3 ms 332 KB Output is correct
39 Correct 4 ms 332 KB Output is correct
40 Correct 3 ms 312 KB Output is correct
41 Correct 2 ms 332 KB Output is correct
42 Correct 4 ms 332 KB Output is correct
43 Correct 3 ms 312 KB Output is correct
44 Correct 2 ms 332 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 10 ms 332 KB Output is correct
9 Correct 10 ms 396 KB Output is correct
10 Correct 10 ms 332 KB Output is correct
11 Correct 7 ms 324 KB Output is correct
12 Correct 7 ms 372 KB Output is correct
13 Correct 7 ms 332 KB Output is correct
14 Correct 7 ms 316 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 1 ms 316 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 8 ms 372 KB Output is correct
20 Correct 8 ms 332 KB Output is correct
21 Correct 10 ms 376 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 2 ms 308 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 9 ms 344 KB Output is correct
27 Correct 7 ms 368 KB Output is correct
28 Correct 7 ms 372 KB Output is correct
29 Correct 7 ms 308 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 308 KB Output is correct
32 Correct 7 ms 332 KB Output is correct
33 Correct 5 ms 332 KB Output is correct
34 Correct 3 ms 332 KB Output is correct
35 Correct 2 ms 312 KB Output is correct
36 Correct 4 ms 332 KB Output is correct
37 Correct 4 ms 320 KB Output is correct
38 Correct 3 ms 332 KB Output is correct
39 Correct 4 ms 332 KB Output is correct
40 Correct 3 ms 312 KB Output is correct
41 Correct 2 ms 332 KB Output is correct
42 Correct 4 ms 332 KB Output is correct
43 Correct 3 ms 312 KB Output is correct
44 Correct 2 ms 332 KB Output is correct
45 Correct 2 ms 332 KB Output is correct
46 Correct 11 ms 756 KB Output is correct
47 Correct 11 ms 716 KB Output is correct
48 Correct 10 ms 716 KB Output is correct
49 Correct 665 ms 960 KB Output is correct
50 Correct 689 ms 1072 KB Output is correct
51 Correct 706 ms 968 KB Output is correct
52 Correct 523 ms 716 KB Output is correct
53 Correct 588 ms 824 KB Output is correct
54 Correct 536 ms 716 KB Output is correct
55 Correct 536 ms 816 KB Output is correct
56 Correct 590 ms 824 KB Output is correct
57 Correct 11 ms 716 KB Output is correct
58 Correct 11 ms 716 KB Output is correct
59 Correct 12 ms 700 KB Output is correct
60 Correct 12 ms 716 KB Output is correct
61 Correct 548 ms 828 KB Output is correct
62 Correct 628 ms 812 KB Output is correct
63 Correct 565 ms 940 KB Output is correct
64 Correct 10 ms 716 KB Output is correct
65 Correct 10 ms 708 KB Output is correct
66 Correct 11 ms 744 KB Output is correct
67 Correct 11 ms 716 KB Output is correct
68 Correct 641 ms 932 KB Output is correct
69 Correct 542 ms 964 KB Output is correct
70 Correct 549 ms 792 KB Output is correct
71 Correct 542 ms 800 KB Output is correct
72 Correct 11 ms 716 KB Output is correct
73 Correct 13 ms 740 KB Output is correct
74 Correct 562 ms 796 KB Output is correct
75 Correct 290 ms 836 KB Output is correct
76 Correct 164 ms 708 KB Output is correct
77 Correct 121 ms 716 KB Output is correct
78 Correct 256 ms 880 KB Output is correct
79 Correct 174 ms 836 KB Output is correct
80 Correct 121 ms 748 KB Output is correct
81 Correct 299 ms 836 KB Output is correct
82 Correct 175 ms 952 KB Output is correct
83 Correct 128 ms 752 KB Output is correct
84 Correct 261 ms 656 KB Output is correct
85 Correct 180 ms 752 KB Output is correct
86 Correct 139 ms 736 KB Output is correct

Subtask #3
0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 10 ms 332 KB Output is correct
9 Correct 10 ms 396 KB Output is correct
10 Correct 10 ms 332 KB Output is correct
11 Correct 7 ms 324 KB Output is correct
12 Correct 7 ms 372 KB Output is correct
13 Correct 7 ms 332 KB Output is correct
14 Correct 7 ms 316 KB Output is correct
15 Correct 1 ms 308 KB Output is correct
16 Correct 1 ms 316 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 8 ms 372 KB Output is correct
20 Correct 8 ms 332 KB Output is correct
21 Correct 10 ms 376 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 2 ms 308 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 9 ms 344 KB Output is correct
27 Correct 7 ms 368 KB Output is correct
28 Correct 7 ms 372 KB Output is correct
29 Correct 7 ms 308 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 308 KB Output is correct
32 Correct 7 ms 332 KB Output is correct
33 Correct 5 ms 332 KB Output is correct
34 Correct 3 ms 332 KB Output is correct
35 Correct 2 ms 312 KB Output is correct
36 Correct 4 ms 332 KB Output is correct
37 Correct 4 ms 320 KB Output is correct
38 Correct 3 ms 332 KB Output is correct
39 Correct 4 ms 332 KB Output is correct
40 Correct 3 ms 312 KB Output is correct
41 Correct 2 ms 332 KB Output is correct
42 Correct 4 ms 332 KB Output is correct
43 Correct 3 ms 312 KB Output is correct
44 Correct 2 ms 332 KB Output is correct
45 Correct 2 ms 332 KB Output is correct
46 Correct 11 ms 756 KB Output is correct
47 Correct 11 ms 716 KB Output is correct
48 Correct 10 ms 716 KB Output is correct
49 Correct 665 ms 960 KB Output is correct
50 Correct 689 ms 1072 KB Output is correct
51 Correct 706 ms 968 KB Output is correct
52 Correct 523 ms 716 KB Output is correct
53 Correct 588 ms 824 KB Output is correct
54 Correct 536 ms 716 KB Output is correct
55 Correct 536 ms 816 KB Output is correct
56 Correct 590 ms 824 KB Output is correct
57 Correct 11 ms 716 KB Output is correct
58 Correct 11 ms 716 KB Output is correct
59 Correct 12 ms 700 KB Output is correct
60 Correct 12 ms 716 KB Output is correct
61 Correct 548 ms 828 KB Output is correct
62 Correct 628 ms 812 KB Output is correct
63 Correct 565 ms 940 KB Output is correct
64 Correct 10 ms 716 KB Output is correct
65 Correct 10 ms 708 KB Output is correct
66 Correct 11 ms 744 KB Output is correct
67 Correct 11 ms 716 KB Output is correct
68 Correct 641 ms 932 KB Output is correct
69 Correct 542 ms 964 KB Output is correct
70 Correct 549 ms 792 KB Output is correct
71 Correct 542 ms 800 KB Output is correct
72 Correct 11 ms 716 KB Output is correct
73 Correct 13 ms 740 KB Output is correct
74 Correct 562 ms 796 KB Output is correct
75 Correct 290 ms 836 KB Output is correct
76 Correct 164 ms 708 KB Output is correct
77 Correct 121 ms 716 KB Output is correct
78 Correct 256 ms 880 KB Output is correct
79 Correct 174 ms 836 KB Output is correct
80 Correct 121 ms 748 KB Output is correct
81 Correct 299 ms 836 KB Output is correct
82 Correct 175 ms 952 KB Output is correct
83 Correct 128 ms 752 KB Output is correct
84 Correct 261 ms 656 KB Output is correct
85 Correct 180 ms 752 KB Output is correct
86 Correct 139 ms 736 KB Output is correct
87 Correct 40 ms 1468 KB Output is correct
88 Correct 245 ms 3772 KB Output is correct
89 Execution timed out 2015 ms 12184 KB Time limit exceeded
90 Halted 0 ms 0 KB -