oj.uz

답안 #637844

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
637844 2022-09-03T12:02:58 Z fatemetmhr Cats or Dogs (JOI18_catdog) C++17
100 / 100
 754 ms 30656 KB 
//  ~Be name khoda~  //
 
#include "catdog.h"
#include<bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
 
#define pb       push_back
#define mp       make_pair
#define all(x)   x.begin(), x.end()
#define fi       first
#define se       second
 
const int maxn  =  1e6   + 10;
const int maxn5 =  1e5   + 10;
const int maxnt =  4e5   + 10;
const int maxn3 =  1e3   + 10;
const int mod   =  1e9   +  7;
const ll  inf   =  1e18;
 
int n, id[maxn5], ti = -1, top[maxn5], par[maxn5];
int retnode[maxn5], a[maxn5], av[maxn5][3], big[maxn5];
int sz[maxn5], ans = 0;
vector <int> adj[maxn5];

struct catdog{
    int add[3], fnres[3];
    bool empty;
    catdog(){
        empty = false;
        add[0] = add[1] = add[2] = fnres[1] = fnres[2] = fnres[0] = 0;
    }
} seg[maxnt], empty_node, res;

catdog operator +(catdog a, catdog b){
    if(a.empty)
        return b;
    if(b.empty)
        return a;
    for(int i = 0; i < 3; i++){
        res.fnres[i] = b.fnres[a.fnres[i]];
        res.add[i] = b.add[a.fnres[i]] + a.add[i];
        //cout << "ok " << i << ' ' << res.fnres[i] << ' ' << res.add[i] << ' ' << a.fnres[i] << ' ' << b.fnres[i] << endl;
    }
    return res;
}

void update(int l, int r, int id, int v){
    if(r - l == 1){
        //cout << "allright " << id << ' ' << a[id] << ' ' << av[id][1] << ' ' << av[id][2] << endl;
        if(a[l] == 1){
            seg[v].fnres[0] = seg[v].fnres[1] = seg[v].fnres[2] = 1;
            seg[v].add[0] = seg[v].add[1] = seg[v].add[2] = av[l][2];
            seg[v].add[2]++;
        }
        if(a[l] == 2){
            seg[v].fnres[0] = seg[v].fnres[1] = seg[v].fnres[2] = 2;
            seg[v].add[0] = seg[v].add[1] = seg[v].add[2] = av[l][1];
            seg[v].add[1]++;
        }
        if(a[l] == 0){
            for(int i = 0; i < 3; i++){
                av[l][i]++;
                if(av[l][1] < av[l][2]){
                    seg[v].fnres[i] = 2;
                    seg[v].add[i] = av[l][1];
                }
                if(av[l][1] > av[l][2]){
                    seg[v].fnres[i] = 1;
                    seg[v].add[i] = av[l][2];
                }
                if(av[l][1] == av[l][2]){
                    seg[v].fnres[i] = 0;
                    seg[v].add[i] = av[l][1];
                }
                av[l][i]--;
            }
     
        }
        /*
        for(int i = 0; i < 3; i++)
            cout << seg[v].fnres[i] << ' ' << seg[v].add[i] << endl;
        cout << "done ans return" << endl;
        */
        return;
    }

    int mid = (l + r) >> 1;
    if(id < mid){
        update(l, mid, id, v * 2);
        //cout << "all here" << endl;
    }
    else{
        update(mid, r, id, v * 2 + 1);
        //cout << "all there" << endl;
    }
    seg[v] = seg[v * 2 + 1] + seg[v * 2];
    //cout << "ask" << ' ' << l << ' ' << r << endl;
    /*
    cout << "update of " << l << ' ' << r << ' ' << id << ' ' << v << endl;
    for(int i = 0; i < 3; i++)
        cout << seg[v].fnres[i] << ' ' << seg[v].add[i] << endl;
    //cout << "done with " << l << ' ' << r << endl;
    */
    return;
}

catdog get(int l, int r, int lq, int rq, int v){
    if(rq <= l || r <= lq)
        return empty_node;
    if(lq <= l && r <= rq){
        /*
        cout << "getting " << l << ' ' << r << ' ' << lq << ' ' << rq << endl;
        for(int i = 0; i < 3; i++)
            cout << seg[v].fnres[i] << ' ' << seg[v].add[i] << endl;
        */
        return seg[v];
    }
    int mid = (l + r) >> 1;
    res = get(mid, r, lq, rq, v * 2 + 1) + get(l, mid, lq, rq, v * 2);
    /*
    cout << "getting " << l << ' ' << r << ' ' << lq << ' ' << rq << ' ' << mid << endl;
    for(int i = 0; i < 3; i++)
        cout << res.fnres[i] << ' ' << res.add[i] << endl;
    */
    return res;
}

void build(int l, int r, int v){
    if(r - l == 1){
        seg[v].fnres[1] = 1;
        seg[v].fnres[2] = 2;
        return;
    }
    int mid = (l + r) >> 1;
    build(l, mid, v * 2);
    build(mid, r, v * 2 + 1);
    seg[v] = seg[v * 2 + 1] + seg[v * 2];
    return;
}
 
void upd(int v){
    //cout << "updating " << v << ' ' << top[v] << ' ' << par[top[v]] << ' ' << id[v] << ' ' << id[top[v]] << ' ' << id[retnode[top[v]]] << endl;
    auto last = get(0, n, id[top[v]], id[retnode[top[v]]] + 1, 1);
    ans -= last.add[0];
    update(0, n, id[v], 1);
    //cout << "done with function" << endl;
    auto cur = get(0, n, id[top[v]], id[retnode[top[v]]] + 1, 1);
    ans += cur.add[0];
    //cout << "having a problem " << last.add[0] << ' ' << cur.add[0] << ' ' << ans << endl;
    if(par[top[v]] == -1)
        return;
    av[id[par[top[v]]]][last.fnres[0]]--;
    av[id[par[top[v]]]][cur.fnres[0]]++;
    upd(par[top[v]]);
}

void dfs_det(int v){
    sz[v] = 1;
    big[v] = -1;
    for(auto u : adj[v]) if(u != par[v]){
        par[u] = v;
        dfs_det(u);
        sz[v] += sz[u];
        if(big[v] == -1 || sz[u] > sz[big[v]])
            big[v] = u;
    }
    return;
}

void dfs_hld(int v){
    id[v] = ++ti;
    retnode[top[v]] = v;
    if(big[v] == -1)
        return;
    top[big[v]] = top[v];
    dfs_hld(big[v]);
    for(auto u : adj[v]) if(u != big[v] && u != par[v]){
        top[u] = u;
        dfs_hld(u);
    }
    return;
}

int cat(int v) {
    v--;
    a[id[v]] = 1;
    upd(v);
    return ans;
}
 
int dog(int v) {
    v--;
    a[id[v]] = 2;
    upd(v);
    return ans;
}
 
int neighbor(int v) {
    v--;
    a[id[v]] = 0;
    upd(v);
    return ans;
}
 
void initialize(int N, std::vector<int> A, std::vector<int> B) {
    n = N;
    empty_node.empty = true;
    build(0, n, 1);
    for(int i = 0; i < n - 1; i++){
        A[i]--; B[i]--;
        adj[A[i]].pb(B[i]);
        adj[B[i]].pb(A[i]);
    }
    par[0] = -1;
    dfs_det(0);
    dfs_hld(0);
    return;
}

/*
5
1 2
2 3
2 4
4 5
5
1 3
2 5
1 2
2 1
3 2
*/

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 13524 KB Output is correct
2 Correct 8 ms 13524 KB Output is correct
3 Correct 7 ms 13652 KB Output is correct
4 Correct 7 ms 13612 KB Output is correct
5 Correct 7 ms 13588 KB Output is correct
6 Correct 7 ms 13524 KB Output is correct
7 Correct 8 ms 13616 KB Output is correct
8 Correct 7 ms 13584 KB Output is correct
9 Correct 7 ms 13524 KB Output is correct
10 Correct 8 ms 13612 KB Output is correct
11 Correct 7 ms 13616 KB Output is correct
12 Correct 7 ms 13652 KB Output is correct
13 Correct 7 ms 13612 KB Output is correct
14 Correct 7 ms 13652 KB Output is correct
15 Correct 7 ms 13616 KB Output is correct
16 Correct 7 ms 13604 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 13524 KB Output is correct
2 Correct 8 ms 13524 KB Output is correct
3 Correct 7 ms 13652 KB Output is correct
4 Correct 7 ms 13612 KB Output is correct
5 Correct 7 ms 13588 KB Output is correct
6 Correct 7 ms 13524 KB Output is correct
7 Correct 8 ms 13616 KB Output is correct
8 Correct 7 ms 13584 KB Output is correct
9 Correct 7 ms 13524 KB Output is correct
10 Correct 8 ms 13612 KB Output is correct
11 Correct 7 ms 13616 KB Output is correct
12 Correct 7 ms 13652 KB Output is correct
13 Correct 7 ms 13612 KB Output is correct
14 Correct 7 ms 13652 KB Output is correct
15 Correct 7 ms 13616 KB Output is correct
16 Correct 7 ms 13604 KB Output is correct
17 Correct 9 ms 13652 KB Output is correct
18 Correct 9 ms 13652 KB Output is correct
19 Correct 9 ms 13652 KB Output is correct
20 Correct 7 ms 13652 KB Output is correct
21 Correct 8 ms 13624 KB Output is correct
22 Correct 9 ms 13620 KB Output is correct
23 Correct 9 ms 13620 KB Output is correct
24 Correct 9 ms 13652 KB Output is correct
25 Correct 8 ms 13616 KB Output is correct
26 Correct 8 ms 13620 KB Output is correct
27 Correct 7 ms 13652 KB Output is correct
28 Correct 8 ms 13652 KB Output is correct
29 Correct 8 ms 13780 KB Output is correct
30 Correct 7 ms 13564 KB Output is correct
31 Correct 7 ms 13652 KB Output is correct
32 Correct 8 ms 13604 KB Output is correct

Subtask #3
62.0 / 62.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 13524 KB Output is correct
2 Correct 8 ms 13524 KB Output is correct
3 Correct 7 ms 13652 KB Output is correct
4 Correct 7 ms 13612 KB Output is correct
5 Correct 7 ms 13588 KB Output is correct
6 Correct 7 ms 13524 KB Output is correct
7 Correct 8 ms 13616 KB Output is correct
8 Correct 7 ms 13584 KB Output is correct
9 Correct 7 ms 13524 KB Output is correct
10 Correct 8 ms 13612 KB Output is correct
11 Correct 7 ms 13616 KB Output is correct
12 Correct 7 ms 13652 KB Output is correct
13 Correct 7 ms 13612 KB Output is correct
14 Correct 7 ms 13652 KB Output is correct
15 Correct 7 ms 13616 KB Output is correct
16 Correct 7 ms 13604 KB Output is correct
17 Correct 9 ms 13652 KB Output is correct
18 Correct 9 ms 13652 KB Output is correct
19 Correct 9 ms 13652 KB Output is correct
20 Correct 7 ms 13652 KB Output is correct
21 Correct 8 ms 13624 KB Output is correct
22 Correct 9 ms 13620 KB Output is correct
23 Correct 9 ms 13620 KB Output is correct
24 Correct 9 ms 13652 KB Output is correct
25 Correct 8 ms 13616 KB Output is correct
26 Correct 8 ms 13620 KB Output is correct
27 Correct 7 ms 13652 KB Output is correct
28 Correct 8 ms 13652 KB Output is correct
29 Correct 8 ms 13780 KB Output is correct
30 Correct 7 ms 13564 KB Output is correct
31 Correct 7 ms 13652 KB Output is correct
32 Correct 8 ms 13604 KB Output is correct
33 Correct 447 ms 19716 KB Output is correct
34 Correct 135 ms 19880 KB Output is correct
35 Correct 403 ms 18616 KB Output is correct
36 Correct 704 ms 24080 KB Output is correct
37 Correct 21 ms 16476 KB Output is correct
38 Correct 754 ms 25148 KB Output is correct
39 Correct 695 ms 25148 KB Output is correct
40 Correct 731 ms 25112 KB Output is correct
41 Correct 744 ms 25112 KB Output is correct
42 Correct 661 ms 25140 KB Output is correct
43 Correct 675 ms 25084 KB Output is correct
44 Correct 661 ms 25120 KB Output is correct
45 Correct 683 ms 25160 KB Output is correct
46 Correct 688 ms 25148 KB Output is correct
47 Correct 705 ms 25116 KB Output is correct
48 Correct 191 ms 21908 KB Output is correct
49 Correct 204 ms 23956 KB Output is correct
50 Correct 80 ms 16140 KB Output is correct
51 Correct 85 ms 17744 KB Output is correct
52 Correct 37 ms 15688 KB Output is correct
53 Correct 273 ms 23392 KB Output is correct
54 Correct 220 ms 18216 KB Output is correct
55 Correct 583 ms 21952 KB Output is correct
56 Correct 367 ms 19132 KB Output is correct
57 Correct 488 ms 23100 KB Output is correct
58 Correct 33 ms 17264 KB Output is correct
59 Correct 79 ms 17024 KB Output is correct
60 Correct 170 ms 21900 KB Output is correct
61 Correct 196 ms 22332 KB Output is correct
62 Correct 111 ms 20300 KB Output is correct
63 Correct 56 ms 20552 KB Output is correct
64 Correct 56 ms 22220 KB Output is correct
65 Correct 68 ms 27004 KB Output is correct
66 Correct 90 ms 17276 KB Output is correct
67 Correct 80 ms 23224 KB Output is correct
68 Correct 150 ms 27448 KB Output is correct
69 Correct 50 ms 15148 KB Output is correct
70 Correct 15 ms 13808 KB Output is correct
71 Correct 78 ms 20180 KB Output is correct
72 Correct 97 ms 25520 KB Output is correct
73 Correct 294 ms 30656 KB Output is correct
74 Correct 361 ms 27072 KB Output is correct
75 Correct 199 ms 30640 KB Output is correct
76 Correct 168 ms 29260 KB Output is correct
77 Correct 378 ms 27468 KB Output is correct