oj.uz

Submission #120459

# Submission time Handle Problem Language Result Execution time Memory
120459 2019-06-24T15:08:13 Z songc Werewolf (IOI18_werewolf) C++14
100 / 100
 1985 ms 182828 KB 
#include <bits/stdc++.h>
#include "werewolf.h"
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;

int N, M, Q;
int P[404040], NL[404040], NR[404040], num;
int H[202020], W[202020];
int HS[202020], HE[202020];
int WS[202020], WE[202020];
vector<int> ans, C[404040];
vector<pii> Point;

struct Data{
    int t, u, v, w;
};
vector<Data> A;

int Find(int u){
    if (u == P[u]) return u;
    return P[u] = Find(P[u]);
}

void Union(int u, int v){
    int pu = Find(u);
    int pv = Find(v);
    if (pu == pv) return;
    P[pu] = P[pv] = num;
    NL[num] = NL[pu];
    NR[num] = NR[pv];
    C[num].push_back(pu);
    C[num].push_back(pv);
    num++;
}

void dfsH(int u){
    if (C[u].empty()){
        H[u] = num++;
        return;
    }
    dfsH(C[u][0]);
    dfsH(C[u][1]);
    C[u].clear();
}

void dfsW(int u){
    if (C[u].empty()){
        W[u] = num++;
        return;
    }
    dfsW(C[u][0]);
    dfsW(C[u][1]);
    C[u].clear();
}

struct Node{
    Node *lc, *rc;
    int val;

    Node();

} *PST[202020], *NIL;

Node :: Node(){
    lc = NIL, rc = NIL;
    val = 0;
}

void update(Node* pre, Node* now, int s, int e, int t){
    now->val = pre->val + 1;
    if (s == e) return;
    int mid = (s+e)/2;
    if (t <= mid){
        now->lc = new Node();
        update(pre->lc, now->lc, s, mid, t);
        now->rc = pre->rc;
    }
    else{
        now->lc = pre->lc;
        now->rc = new Node();
        update(pre->rc, now->rc, mid+1, e, t);
    }
}

int query(Node* now, int s, int e, int ts, int te){
    if (e < ts || te < s) return 0;
    if (ts <= s && e <= te) return now->val;
    int mid = (s+e)/2;
    return query(now->lc, s, mid, ts, te) + query(now->rc, mid+1, e, ts, te);
}

vector<int> check_validity(int n, vector<int> X, vector<int> Y, vector<int> S, vector<int> E, vector<int> L, vector<int> R) {
    N = n, M = X.size(), Q = S.size();

    for (int i=0; i<M; i++) A.push_back((Data){0, X[i], Y[i], min(X[i], Y[i])});
    for (int i=0; i<Q; i++) A.push_back((Data){1, S[i], i, L[i]});
    sort(A.begin(), A.end(), [&](Data a, Data b){
        if (a.w == b.w) return a.t < b.t;
        return a.w > b.w;
    });

    num = N+1;
    for (int i=0; i<=2*N; i++) P[i] = i, NL[i] = NR[i] = i;
    for (int i=0; i<(int)A.size(); i++){
        if (A[i].t == 0) Union(A[i].u, A[i].v);
        else {
            HS[A[i].v] = NL[Find(A[i].u)];
            HE[A[i].v] = NR[Find(A[i].u)];
        }
    }
    num=0;
    dfsH(2*N-1);
    A.clear();

    for (int i=0; i<M; i++) A.push_back((Data){0, X[i], Y[i], max(X[i], Y[i])});
    for (int i=0; i<Q; i++) A.push_back((Data){1, E[i], i, R[i]});
    sort(A.begin(), A.end(), [&](Data a, Data b){
        if (a.w == b.w) return a.t < b.t;
        return a.w < b.w;
    });

    num = N+1;
    for (int i=0; i<=2*N; i++) P[i] = i, NL[i] = NR[i] = i;
    for (int i=0; i<(int)A.size(); i++){
        if (A[i].t == 0) Union(A[i].u, A[i].v);
        else {
            WS[A[i].v] = NL[Find(A[i].u)];
            WE[A[i].v] = NR[Find(A[i].u)];
        }
    }
    num=0;
    dfsW(2*N-1);
    A.clear();

    for (int i=0; i<Q; i++){
        HS[i] = H[HS[i]], HE[i] = H[HE[i]];
        WS[i] = W[WS[i]], WE[i] = W[WE[i]];
    }
    for (int i=0; i<N; i++) Point.push_back(pii(H[i], W[i]));
    sort(Point.begin(), Point.end());

    NIL = new Node();
    NIL->lc = NIL->rc = NIL;
    PST[0] = new Node;
    for (int i=1; i<=N; i++) {
        PST[i] = new Node;
        update(PST[i-1], PST[i], 0, N, Point[i-1].second);
    }

    for (int i=0; i<Q; i++){
        if (query(PST[HE[i]+1], 0, N, WS[i], WE[i]) - query(PST[HS[i]], 0, N, WS[i], WE[i])) ans.push_back(1);
        else ans.push_back(0);
    }
    return ans;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9984 KB Output is correct
2 Correct 9 ms 9984 KB Output is correct
3 Correct 9 ms 9856 KB Output is correct
4 Correct 9 ms 9856 KB Output is correct
5 Correct 9 ms 9856 KB Output is correct
6 Correct 9 ms 9856 KB Output is correct
7 Correct 10 ms 9984 KB Output is correct
8 Correct 9 ms 9856 KB Output is correct
9 Correct 9 ms 9856 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9984 KB Output is correct
2 Correct 9 ms 9984 KB Output is correct
3 Correct 9 ms 9856 KB Output is correct
4 Correct 9 ms 9856 KB Output is correct
5 Correct 9 ms 9856 KB Output is correct
6 Correct 9 ms 9856 KB Output is correct
7 Correct 10 ms 9984 KB Output is correct
8 Correct 9 ms 9856 KB Output is correct
9 Correct 9 ms 9856 KB Output is correct
10 Correct 18 ms 11648 KB Output is correct
11 Correct 17 ms 11648 KB Output is correct
12 Correct 17 ms 11648 KB Output is correct
13 Correct 19 ms 11776 KB Output is correct
14 Correct 18 ms 11776 KB Output is correct
15 Correct 18 ms 11772 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 959 ms 163272 KB Output is correct
2 Correct 1006 ms 174732 KB Output is correct
3 Correct 881 ms 172740 KB Output is correct
4 Correct 859 ms 171780 KB Output is correct
5 Correct 870 ms 171768 KB Output is correct
6 Correct 1365 ms 171536 KB Output is correct
7 Correct 807 ms 171604 KB Output is correct
8 Correct 994 ms 174664 KB Output is correct
9 Correct 771 ms 172728 KB Output is correct
10 Correct 690 ms 171932 KB Output is correct
11 Correct 727 ms 171692 KB Output is correct
12 Correct 750 ms 171732 KB Output is correct
13 Correct 996 ms 174624 KB Output is correct
14 Correct 1055 ms 174748 KB Output is correct
15 Correct 1083 ms 174668 KB Output is correct
16 Correct 1054 ms 174700 KB Output is correct
17 Correct 822 ms 171608 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9984 KB Output is correct
2 Correct 9 ms 9984 KB Output is correct
3 Correct 9 ms 9856 KB Output is correct
4 Correct 9 ms 9856 KB Output is correct
5 Correct 9 ms 9856 KB Output is correct
6 Correct 9 ms 9856 KB Output is correct
7 Correct 10 ms 9984 KB Output is correct
8 Correct 9 ms 9856 KB Output is correct
9 Correct 9 ms 9856 KB Output is correct
10 Correct 18 ms 11648 KB Output is correct
11 Correct 17 ms 11648 KB Output is correct
12 Correct 17 ms 11648 KB Output is correct
13 Correct 19 ms 11776 KB Output is correct
14 Correct 18 ms 11776 KB Output is correct
15 Correct 18 ms 11772 KB Output is correct
16 Correct 959 ms 163272 KB Output is correct
17 Correct 1006 ms 174732 KB Output is correct
18 Correct 881 ms 172740 KB Output is correct
19 Correct 859 ms 171780 KB Output is correct
20 Correct 870 ms 171768 KB Output is correct
21 Correct 1365 ms 171536 KB Output is correct
22 Correct 807 ms 171604 KB Output is correct
23 Correct 994 ms 174664 KB Output is correct
24 Correct 771 ms 172728 KB Output is correct
25 Correct 690 ms 171932 KB Output is correct
26 Correct 727 ms 171692 KB Output is correct
27 Correct 750 ms 171732 KB Output is correct
28 Correct 996 ms 174624 KB Output is correct
29 Correct 1055 ms 174748 KB Output is correct
30 Correct 1083 ms 174668 KB Output is correct
31 Correct 1054 ms 174700 KB Output is correct
32 Correct 822 ms 171608 KB Output is correct
33 Correct 1365 ms 172348 KB Output is correct
34 Correct 486 ms 50512 KB Output is correct
35 Correct 1763 ms 175176 KB Output is correct
36 Correct 1369 ms 172404 KB Output is correct
37 Correct 1668 ms 174268 KB Output is correct
38 Correct 1452 ms 172944 KB Output is correct
39 Correct 1683 ms 177848 KB Output is correct
40 Correct 1074 ms 182636 KB Output is correct
41 Correct 1371 ms 173808 KB Output is correct
42 Correct 807 ms 172272 KB Output is correct
43 Correct 1985 ms 179660 KB Output is correct
44 Correct 1580 ms 174224 KB Output is correct
45 Correct 1215 ms 178372 KB Output is correct
46 Correct 1626 ms 178144 KB Output is correct
47 Correct 1022 ms 175000 KB Output is correct
48 Correct 1014 ms 174804 KB Output is correct
49 Correct 965 ms 174980 KB Output is correct
50 Correct 1050 ms 174916 KB Output is correct
51 Correct 964 ms 182828 KB Output is correct
52 Correct 969 ms 182724 KB Output is correct