oj.uz

Submission #495902

# Submission time Handle Problem Language Result Execution time Memory
495902 2021-12-20T07:36:29 Z armashka Birthday gift (IZhO18_treearray) C++17
30 / 100
 30 ms 36144 KB 
#include <bits/stdc++.h>
 
//#pragma comment(linker, "/stack:200000000")
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
 
#define fast ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
#define all(v) v.begin(),v.end()
#define pb push_back
#define sz size()
#define ft first
#define sd second
 
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef unsigned long long ull;
 
const int N = 3e5 + 5;
const ll M = 1e8;
const ll inf = 1e3;
const ll mod = 1e9;
const double Pi = acos(-1); 
 
ll binpow(ll x, ll ti) { ll res = 1;while (ti){if(ti & 1)res *= x;x *= x;ti >>= 1; x %= mod; res %= mod;} return res;}
ll binmul(ll x, ll ti) { ll res = 0;while (ti){if(ti & 1)res += x;x += x;ti >>= 1; x %= mod; res %= mod;} return res;}
ll nok(ll a, ll b) { return (a*b)/__gcd(abs(a),abs(b)) * (a*b > 0 ? 1 : -1); }
bool odd(ll n) { return (n % 2 == 1); }
bool even(ll n) { return (n % 2 == 0); }            
 
ll n, m, q, a[N], d[N], p[N], len, t[N * 4], in[N], out[N], timer;
vector <ll> g[N], order;
set <ll> st[N], ss[N];
bool used[N];
 
void dfs(ll v) {
    used[v] = 1;
    order.pb(v);
    in[v] = ++ timer;
    for (auto to : g[v]) {
        if (!used[to]) {
            d[to] = d[v] + 1;
            dfs(to);
            order.pb(v);
        }
    }
    out[v] = ++ timer;
}
 
void build(ll v = 1, ll tl = 1, ll tr = len) {
    if (tl == tr) {
        t[v] = order[tl - 1];
        return;
    }
    ll tm = (tl + tr) / 2;
    build(v + v, tl, tm);
    build(v + v + 1, tm + 1, tr);
    if (d[t[v + v]] < d[t[v + v + 1]]) t[v] = t[v + v];
    else t[v] = t[v + v + 1];
}
 
ll get_lca(ll l, ll r, ll v = 1, ll tl = 1, ll tr = len) {
    if (r < tl || tr < l) return 0;
    if (l <= tl && tr <= r) return t[v];
    ll tm = (tl + tr) / 2;
    ll ans1 = get_lca(l, r, v + v, tl, tm);
    ll ans2 = get_lca(l, r, v + v + 1, tm + 1, tr);
    if (d[ans1] < d[ans2]) return ans1;
    else return ans2;
}
 
const void solve(/*Armashka*/) {
    cin >> n >> m >> q;
    for (int i = 1; i < n; ++ i) {
        ll u, v;
        cin >> u >> v;
        g[u].pb(v);
        g[v].pb(u);
    }
    dfs(1);
    len = order.sz;
    build();
    for (int i = 0; i < len; ++ i) {
        ll cur = order[i];
        if (!p[cur]) p[cur] = i + 1;
    }
    d[0] = inf;
    for (int i = 1; i <= m; ++ i) cin >> a[i];
    for (int i = 1; i < m; ++ i) {
        ll f = p[a[i]], s = p[a[i + 1]];
        if (f > s) swap(f, s);
        ll lca = get_lca(f, s);
        st[lca].insert(i);
        ss[a[i]].insert(i);
    }
    ss[a[m]].insert(m);
    while (q --) {
        ll type;
        cin >> type;
        if (type == 1) {
            ll pos, val;
            cin >> pos >> val;
            if (pos > 1) {
                ll f = p[a[pos - 1]], s = p[a[pos]];
                if (f > s) swap(f, s);
                st[get_lca(f, s)].erase(pos - 1);
            }
            if (pos < m) {
                ll f = p[a[pos]], s = p[a[pos + 1]];
                if (f > s) swap(f, s);
                st[get_lca(f, s)].erase(pos);
            }
            ss[a[pos]].erase(pos);
            a[pos] = val;
            ss[a[pos]].insert(pos);
            if (pos > 1) {
                ll f = p[a[pos - 1]], s = p[a[pos]];
                if (f > s) swap(f, s);
                st[get_lca(f, s)].insert(pos - 1);
            }
            if (pos < m) {
                ll f = p[a[pos]], s = p[a[pos + 1]];
                if (f > s) swap(f, s);
                st[get_lca(f, s)].insert(pos);  
            }
        } else {
            ll L, R, v;
            cin >> L >> R >> v;
            auto pos = st[v].lower_bound(L);
            if (pos != st[v].end() && *pos < R) cout << *pos << " " << *pos + 1 << "\n";
            else {
                auto pos = ss[v].lower_bound(L);
                if (pos != ss[v].end() && *pos <= R) cout << *pos << " " << *pos << "\n";
                else cout << "-1 -1\n";
            }
        }
    }
}
 
signed main() {
    fast;
    //freopen("divide.in", "r", stdin);
    //freopen("divide.out", "w", stdout);
    int tt = 1;
    //cin >> tt;
    while (tt --) {
        solve();
    }
}
 
/*
5 4 4
1 2
3 1
3 4
5 3
4 5 2 3
2 1 3 1
1 3 5
2 3 4 5
2 1 3 1
*/

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 35532 KB n=5
2 Correct 18 ms 35532 KB n=100
3 Correct 19 ms 35600 KB n=100
4 Correct 21 ms 35592 KB n=100
5 Correct 17 ms 35592 KB n=100
6 Correct 20 ms 35532 KB n=100
7 Correct 19 ms 35532 KB n=100
8 Correct 24 ms 35532 KB n=100
9 Correct 22 ms 35532 KB n=100
10 Correct 19 ms 35508 KB n=100
11 Correct 19 ms 35608 KB n=100
12 Correct 19 ms 35532 KB n=100
13 Correct 20 ms 35532 KB n=100
14 Correct 18 ms 35500 KB n=100
15 Correct 20 ms 35532 KB n=100
16 Correct 23 ms 35576 KB n=100
17 Correct 18 ms 35564 KB n=100
18 Correct 18 ms 35532 KB n=100
19 Correct 18 ms 35532 KB n=100
20 Correct 20 ms 35568 KB n=100
21 Correct 17 ms 35532 KB n=100
22 Correct 18 ms 35532 KB n=100
23 Correct 22 ms 35532 KB n=100
24 Correct 22 ms 35608 KB n=100
25 Correct 19 ms 35516 KB n=100
26 Correct 20 ms 35564 KB n=12
27 Correct 18 ms 35556 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 35532 KB n=5
2 Correct 18 ms 35532 KB n=100
3 Correct 19 ms 35600 KB n=100
4 Correct 21 ms 35592 KB n=100
5 Correct 17 ms 35592 KB n=100
6 Correct 20 ms 35532 KB n=100
7 Correct 19 ms 35532 KB n=100
8 Correct 24 ms 35532 KB n=100
9 Correct 22 ms 35532 KB n=100
10 Correct 19 ms 35508 KB n=100
11 Correct 19 ms 35608 KB n=100
12 Correct 19 ms 35532 KB n=100
13 Correct 20 ms 35532 KB n=100
14 Correct 18 ms 35500 KB n=100
15 Correct 20 ms 35532 KB n=100
16 Correct 23 ms 35576 KB n=100
17 Correct 18 ms 35564 KB n=100
18 Correct 18 ms 35532 KB n=100
19 Correct 18 ms 35532 KB n=100
20 Correct 20 ms 35568 KB n=100
21 Correct 17 ms 35532 KB n=100
22 Correct 18 ms 35532 KB n=100
23 Correct 22 ms 35532 KB n=100
24 Correct 22 ms 35608 KB n=100
25 Correct 19 ms 35516 KB n=100
26 Correct 20 ms 35564 KB n=12
27 Correct 18 ms 35556 KB n=100
28 Correct 18 ms 35668 KB n=500
29 Correct 20 ms 35684 KB n=500
30 Correct 20 ms 35684 KB n=500
31 Correct 24 ms 35668 KB n=500
32 Correct 19 ms 35660 KB n=500
33 Correct 23 ms 35676 KB n=500
34 Correct 20 ms 35708 KB n=500
35 Correct 19 ms 35660 KB n=500
36 Correct 18 ms 35660 KB n=500
37 Correct 19 ms 35660 KB n=500
38 Correct 21 ms 35640 KB n=500
39 Correct 24 ms 35600 KB n=500
40 Correct 20 ms 35604 KB n=500
41 Correct 19 ms 35668 KB n=500
42 Correct 20 ms 35584 KB n=500
43 Correct 20 ms 35660 KB n=500
44 Correct 19 ms 35660 KB n=500
45 Correct 20 ms 35708 KB n=500
46 Correct 20 ms 35660 KB n=500
47 Correct 20 ms 35688 KB n=500
48 Correct 20 ms 35660 KB n=500
49 Correct 21 ms 35660 KB n=500
50 Correct 19 ms 35588 KB n=500
51 Correct 20 ms 35660 KB n=500
52 Correct 20 ms 35632 KB n=500
53 Correct 19 ms 35660 KB n=500
54 Correct 20 ms 35628 KB n=500
55 Correct 19 ms 35628 KB n=278
56 Correct 20 ms 35672 KB n=500
57 Correct 19 ms 35660 KB n=500
58 Correct 20 ms 35584 KB n=500

Subtask #3
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 35532 KB n=5
2 Correct 18 ms 35532 KB n=100
3 Correct 19 ms 35600 KB n=100
4 Correct 21 ms 35592 KB n=100
5 Correct 17 ms 35592 KB n=100
6 Correct 20 ms 35532 KB n=100
7 Correct 19 ms 35532 KB n=100
8 Correct 24 ms 35532 KB n=100
9 Correct 22 ms 35532 KB n=100
10 Correct 19 ms 35508 KB n=100
11 Correct 19 ms 35608 KB n=100
12 Correct 19 ms 35532 KB n=100
13 Correct 20 ms 35532 KB n=100
14 Correct 18 ms 35500 KB n=100
15 Correct 20 ms 35532 KB n=100
16 Correct 23 ms 35576 KB n=100
17 Correct 18 ms 35564 KB n=100
18 Correct 18 ms 35532 KB n=100
19 Correct 18 ms 35532 KB n=100
20 Correct 20 ms 35568 KB n=100
21 Correct 17 ms 35532 KB n=100
22 Correct 18 ms 35532 KB n=100
23 Correct 22 ms 35532 KB n=100
24 Correct 22 ms 35608 KB n=100
25 Correct 19 ms 35516 KB n=100
26 Correct 20 ms 35564 KB n=12
27 Correct 18 ms 35556 KB n=100
28 Correct 18 ms 35668 KB n=500
29 Correct 20 ms 35684 KB n=500
30 Correct 20 ms 35684 KB n=500
31 Correct 24 ms 35668 KB n=500
32 Correct 19 ms 35660 KB n=500
33 Correct 23 ms 35676 KB n=500
34 Correct 20 ms 35708 KB n=500
35 Correct 19 ms 35660 KB n=500
36 Correct 18 ms 35660 KB n=500
37 Correct 19 ms 35660 KB n=500
38 Correct 21 ms 35640 KB n=500
39 Correct 24 ms 35600 KB n=500
40 Correct 20 ms 35604 KB n=500
41 Correct 19 ms 35668 KB n=500
42 Correct 20 ms 35584 KB n=500
43 Correct 20 ms 35660 KB n=500
44 Correct 19 ms 35660 KB n=500
45 Correct 20 ms 35708 KB n=500
46 Correct 20 ms 35660 KB n=500
47 Correct 20 ms 35688 KB n=500
48 Correct 20 ms 35660 KB n=500
49 Correct 21 ms 35660 KB n=500
50 Correct 19 ms 35588 KB n=500
51 Correct 20 ms 35660 KB n=500
52 Correct 20 ms 35632 KB n=500
53 Correct 19 ms 35660 KB n=500
54 Correct 20 ms 35628 KB n=500
55 Correct 19 ms 35628 KB n=278
56 Correct 20 ms 35672 KB n=500
57 Correct 19 ms 35660 KB n=500
58 Correct 20 ms 35584 KB n=500
59 Correct 28 ms 36048 KB n=2000
60 Incorrect 30 ms 36144 KB Jury has the answer but participant has not
61 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 35532 KB n=5
2 Correct 18 ms 35532 KB n=100
3 Correct 19 ms 35600 KB n=100
4 Correct 21 ms 35592 KB n=100
5 Correct 17 ms 35592 KB n=100
6 Correct 20 ms 35532 KB n=100
7 Correct 19 ms 35532 KB n=100
8 Correct 24 ms 35532 KB n=100
9 Correct 22 ms 35532 KB n=100
10 Correct 19 ms 35508 KB n=100
11 Correct 19 ms 35608 KB n=100
12 Correct 19 ms 35532 KB n=100
13 Correct 20 ms 35532 KB n=100
14 Correct 18 ms 35500 KB n=100
15 Correct 20 ms 35532 KB n=100
16 Correct 23 ms 35576 KB n=100
17 Correct 18 ms 35564 KB n=100
18 Correct 18 ms 35532 KB n=100
19 Correct 18 ms 35532 KB n=100
20 Correct 20 ms 35568 KB n=100
21 Correct 17 ms 35532 KB n=100
22 Correct 18 ms 35532 KB n=100
23 Correct 22 ms 35532 KB n=100
24 Correct 22 ms 35608 KB n=100
25 Correct 19 ms 35516 KB n=100
26 Correct 20 ms 35564 KB n=12
27 Correct 18 ms 35556 KB n=100
28 Correct 18 ms 35668 KB n=500
29 Correct 20 ms 35684 KB n=500
30 Correct 20 ms 35684 KB n=500
31 Correct 24 ms 35668 KB n=500
32 Correct 19 ms 35660 KB n=500
33 Correct 23 ms 35676 KB n=500
34 Correct 20 ms 35708 KB n=500
35 Correct 19 ms 35660 KB n=500
36 Correct 18 ms 35660 KB n=500
37 Correct 19 ms 35660 KB n=500
38 Correct 21 ms 35640 KB n=500
39 Correct 24 ms 35600 KB n=500
40 Correct 20 ms 35604 KB n=500
41 Correct 19 ms 35668 KB n=500
42 Correct 20 ms 35584 KB n=500
43 Correct 20 ms 35660 KB n=500
44 Correct 19 ms 35660 KB n=500
45 Correct 20 ms 35708 KB n=500
46 Correct 20 ms 35660 KB n=500
47 Correct 20 ms 35688 KB n=500
48 Correct 20 ms 35660 KB n=500
49 Correct 21 ms 35660 KB n=500
50 Correct 19 ms 35588 KB n=500
51 Correct 20 ms 35660 KB n=500
52 Correct 20 ms 35632 KB n=500
53 Correct 19 ms 35660 KB n=500
54 Correct 20 ms 35628 KB n=500
55 Correct 19 ms 35628 KB n=278
56 Correct 20 ms 35672 KB n=500
57 Correct 19 ms 35660 KB n=500
58 Correct 20 ms 35584 KB n=500
59 Correct 28 ms 36048 KB n=2000
60 Incorrect 30 ms 36144 KB Jury has the answer but participant has not
61 Halted 0 ms 0 KB -