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Submission #1098889

# Submission time Handle Problem Language Result Execution time Memory
1098889 2024-10-10T09:40:41 Z Pacybwoah Werewolf (IOI18_werewolf) C++17
100 / 100
 472 ms 92920 KB 
#include "werewolf.h"
#include<iostream>
#include<utility>
#include<algorithm>
#include<vector>
using namespace std;
namespace{
    int n, q;
    vector<int> bases;
    struct node{
        int par, sz, lid, rid;
        node(int a, int b, int c, int d){
            par = a;
            sz = b;
            lid = c;
            rid = d;
        }
    };
    struct dsust{
        vector<node> dsu;
        vector<int> l, r, w, vec, pos;
        vector<vector<int>> st;
        dsust(){
            for(int i = 0; i <= n; i++) dsu.push_back(node(i, 1, i, i));
            l.resize(n + 1);
            r.resize(n + 1);
            w.resize(n + 1);
            vec.resize(n + 1);
            pos.resize(n + 1);
            st.resize(19, vector<int>(n + 1));
            fill(l.begin(), l.end(), -1);
            fill(r.begin(), r.end(), -1);
        }
        int query(int x){
            if(x == dsu[x].par) return x;
            dsu[x].par = query(dsu[x].par);
            return dsu[x].par;
        }
        void unite(int a, int b, int val){
            a = query(a);
            b = query(b);
            if(a == b) return;
            if(dsu[a].sz < dsu[b].sz) swap(a, b);
            dsu[b].par = a;
            dsu[a].sz += dsu[b].sz;
            w[dsu[a].rid] = val;
            r[dsu[a].rid] = dsu[b].lid;
            l[dsu[b].lid] = dsu[a].rid;
            dsu[a].rid = dsu[b].rid;
        }
        void build(){
            int cur = dsu[query(1)].lid;
            for(int i = 1; i <= n; i++){
                vec[i] = cur;
                pos[cur] = i;
                st[0][i] = w[cur];
                cur = r[cur];
            }
            for(int i = 1; i < 19; i++){
                for(int j = 1; j < n; j++){
                    st[i][j] = max(st[i - 1][j], st[i - 1][min(n - 1, j + (1 << (i - 1)))]);
                }
            }
        }
        int query(int ql, int qr){
            int len = qr - ql + 1;
            return max(st[bases[len]][ql], st[bases[len]][qr - (1 << bases[len]) + 1]);
        }
        pair<int, int> get_rng(int id, int val){
            pair<int, int> ans;
            id = pos[id];
            int bsl = id, bsr = n;
            while(bsl < bsr){
                int mid = ((bsl + bsr) >> 1) + 1;
                if(query(id, mid - 1) > val) bsr = mid - 1;
                else bsl = mid;
            }
            ans.second = bsl;
            bsl = 1, bsr = id;
            while(bsl < bsr){
                int mid = (bsl + bsr) >> 1;
                if(query(mid, id - 1) > val) bsl = mid + 1;
                else bsr = mid;
            }
            ans.first = bsl;
            return ans;
        }
    };
    struct bit{
        vector<int> vec;
        bit(int _n){
            vec.resize(_n + 1);
        }
        void modify(int pos){
            while(pos <= n){
                vec[pos]++;
                pos += (pos & -pos);
            }
        }
        int query(int pos){
            int ans = 0;
            while(pos > 0){
                ans += vec[pos];
                pos -= (pos & -pos);
            }
            return ans;
        }
    };
}
std::vector<int> check_validity(int N, std::vector<int> X, std::vector<int> Y, std::vector<int> S, std::vector<int> E, std::vector<int> L, std::vector<int> R) {
    n = N;
    q = (int)S.size();
    bases.resize(n);
    int now = 0;
    for(int i = 1; i < n; i++){
        if((1 << (now + 1)) <= i) now++;
        bases[i] = now;
    }
    int m = (int)X.size();
    vector<pair<pair<int, int>, int>> maxedges, minedges;
    auto cmp = [&](pair<pair<int, int>, int> a, pair<pair<int, int>, int> b){
        return a.second < b.second;
    };
    for(int i = 0; i < m; i++){
        X[i]++;
        Y[i]++;
        maxedges.push_back(make_pair(make_pair(X[i], Y[i]), -min(X[i], Y[i])));
        minedges.push_back(make_pair(make_pair(X[i], Y[i]), max(X[i], Y[i])));
    }
    sort(maxedges.begin(), maxedges.end(), cmp);
    sort(minedges.begin(), minedges.end(), cmp);
    dsust maxst = dsust(), minst = dsust();
    for(auto &[x, val]: maxedges){
        auto &[u, v] = x;
        maxst.unite(u, v, val);
    }
    for(auto &[x, val]: minedges){
        auto &[u, v] = x;
        minst.unite(u, v, val);
    }
    maxst.build();
    minst.build();
    vector<pair<int, int>> qpos(q);
    vector<vector<pair<int, int>>> sweep(n + 1);
    vector<int> ans(q);
    for(int i = 0; i < q; i++){
        S[i]++;
        E[i]++;
        L[i]++;
        R[i]++;
        qpos[i] = minst.get_rng(E[i], R[i]);
        auto [l, r] = maxst.get_rng(S[i], -L[i]);
        sweep[l - 1].emplace_back(i, -1);
        sweep[r].emplace_back(i, 1);
    }
    bit b(n);
    for(int i = 1; i <= n; i++){
        b.modify(minst.pos[maxst.vec[i]]);
        for(auto &[id, val]: sweep[i]){
            ans[id] += val * (b.query(qpos[id].second) - b.query(qpos[id].first - 1));
        }
    }
    vector<int> anss;
    for(int i = 0; i < q; i++){
        if(ans[i] > 0) anss.push_back(1);
        else anss.push_back(0);
    }
    return anss;
}
// g++ -std=c++17 -fsanitize=undefined -fsanitize=address -Wall -Wextra -Wshadow grader.cpp werewolf.cpp -o run
/*
6 6 3
5 1
1 2
1 3
3 4
3 0
5 2
4 2 1 2
4 2 2 2
5 4 3 4
*/

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 4 ms 1624 KB Output is correct
11 Correct 6 ms 1624 KB Output is correct
12 Correct 4 ms 1628 KB Output is correct
13 Correct 3 ms 1580 KB Output is correct
14 Correct 4 ms 1628 KB Output is correct
15 Correct 5 ms 1628 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 398 ms 83172 KB Output is correct
2 Correct 377 ms 81192 KB Output is correct
3 Correct 356 ms 81196 KB Output is correct
4 Correct 366 ms 81372 KB Output is correct
5 Correct 380 ms 81708 KB Output is correct
6 Correct 423 ms 82736 KB Output is correct
7 Correct 472 ms 81964 KB Output is correct
8 Correct 373 ms 81192 KB Output is correct
9 Correct 251 ms 80936 KB Output is correct
10 Correct 284 ms 81200 KB Output is correct
11 Correct 290 ms 81196 KB Output is correct
12 Correct 248 ms 81192 KB Output is correct
13 Correct 397 ms 82220 KB Output is correct
14 Correct 411 ms 82272 KB Output is correct
15 Correct 414 ms 82480 KB Output is correct
16 Correct 394 ms 82224 KB Output is correct
17 Correct 397 ms 81956 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 4 ms 1624 KB Output is correct
11 Correct 6 ms 1624 KB Output is correct
12 Correct 4 ms 1628 KB Output is correct
13 Correct 3 ms 1580 KB Output is correct
14 Correct 4 ms 1628 KB Output is correct
15 Correct 5 ms 1628 KB Output is correct
16 Correct 398 ms 83172 KB Output is correct
17 Correct 377 ms 81192 KB Output is correct
18 Correct 356 ms 81196 KB Output is correct
19 Correct 366 ms 81372 KB Output is correct
20 Correct 380 ms 81708 KB Output is correct
21 Correct 423 ms 82736 KB Output is correct
22 Correct 472 ms 81964 KB Output is correct
23 Correct 373 ms 81192 KB Output is correct
24 Correct 251 ms 80936 KB Output is correct
25 Correct 284 ms 81200 KB Output is correct
26 Correct 290 ms 81196 KB Output is correct
27 Correct 248 ms 81192 KB Output is correct
28 Correct 397 ms 82220 KB Output is correct
29 Correct 411 ms 82272 KB Output is correct
30 Correct 414 ms 82480 KB Output is correct
31 Correct 394 ms 82224 KB Output is correct
32 Correct 397 ms 81956 KB Output is correct
33 Correct 413 ms 82848 KB Output is correct
34 Correct 223 ms 42608 KB Output is correct
35 Correct 392 ms 83760 KB Output is correct
36 Correct 415 ms 83244 KB Output is correct
37 Correct 438 ms 83384 KB Output is correct
38 Correct 440 ms 83752 KB Output is correct
39 Correct 401 ms 83240 KB Output is correct
40 Correct 447 ms 92920 KB Output is correct
41 Correct 318 ms 81708 KB Output is correct
42 Correct 242 ms 81548 KB Output is correct
43 Correct 413 ms 87584 KB Output is correct
44 Correct 365 ms 82472 KB Output is correct
45 Correct 270 ms 81964 KB Output is correct
46 Correct 291 ms 81452 KB Output is correct
47 Correct 412 ms 82468 KB Output is correct
48 Correct 429 ms 82220 KB Output is correct
49 Correct 434 ms 82472 KB Output is correct
50 Correct 419 ms 82320 KB Output is correct
51 Correct 446 ms 92180 KB Output is correct
52 Correct 452 ms 92184 KB Output is correct