oj.uz

답안 #411355

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
411355 2021-05-25T06:41:15 Z usachevd0 늑대인간 (IOI18_werewolf) C++14
100 / 100
 1425 ms 173164 KB 
#include <bits/stdc++.h>
#ifndef LOCAL
    #include "werewolf.h"
#endif

using namespace std;

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define all(a) (a).begin(), (a).end()
#define Time (clock() * 1.0 / CLOCKS_PER_SEC)
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
using ld = long double;
template<typename T1, typename T2> bool chkmin(T1& x, T2 y) {
    return y < x ? (x = y, true) : false;
}
template<typename T1, typename T2> bool chkmax(T1& x, T2 y) {
    return y > x ? (x = y, true) : false;
}
void debug_out() {
    cerr << endl;
}
template<typename T1, typename... T2> void debug_out(T1 A, T2... B) {
    cerr << ' ' << A;
    debug_out(B...);
}
template<typename T> void mdebug_out(T* a, int n) {
    for (int i = 0; i < n; ++i)
        cerr << a[i] << ' ';
    cerr << endl;
}
#ifdef LOCAL
    #define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
    #define mdebug(a, n) cerr << #a << ": ", mdebug_out(a, n)
#else
    #define debug(...) 1337
    #define mdebug(a, n) 1337
#endif
template<typename T> ostream& operator << (ostream& stream, const vector<T>& v) {
    for (auto& x : v)
        stream << x << ' ';
    return stream;
}
template<typename T1, typename T2> ostream& operator << (ostream& stream, const pair<T1, T2>& p) {
    return stream << p.first << ' ' << p.second;
}


const int INF32 = 1e9;
const int maxN = 200005;
int n, m, Q;
vector<int> G[maxN];

int timer;
int where[maxN];
vector<pii> hist[maxN];
vector<int> comp[maxN];

void joinR(int x, int y) {
    x = where[x];
    y = where[y];
    if (x == y) return;
    if (comp[x].size() < comp[y].size()) swap(x, y);
    for (int v : comp[y]) {
        where[v] = x;
        while (!hist[v].empty() && hist[v].back().fi == timer)
            hist[v].pop_back();
        hist[v].emplace_back(timer, x);
        comp[x].push_back(v);
    }
    comp[y].clear();
}

map<int, int> kek[maxN];

void joinL(int x, int y) {
    x = where[x];
    y = where[y];
    if (x == y) return;
    if (comp[x].size() < comp[y].size()) swap(x, y);
    for (int v : comp[y]) {
        where[v] = x;
        comp[x].push_back(v);
    }
    for (auto el : kek[y]) {
        int tau = el.se;
        int c = el.fi;
        if (!kek[x].count(c) || kek[x][c] > tau) {
            kek[x][c] = tau;
        }
    }
    comp[y].clear();
}

int getCompR(int v, int tau) {
    int i = upper_bound(all(hist[v]), mp(tau, INF32)) - hist[v].begin() - 1;
    return hist[v][i].se;
}

vector<int> queL[maxN];

vector<int> check_validity(int _n, vector<int> eu, vector<int> ev, vector<int> qs, vector<int> qt, vector<int> ql, vector<int> qr) {
    n = _n;
    m = eu.size();
    Q = qs.size();
    for (int j = 0; j < m; ++j) {
        int u = eu[j], v = ev[j];
        G[u].push_back(v);
        G[v].push_back(u);
    }
    
    for (int r = 0; r < n; ++r) {
        timer = r;
        where[r] = r;
        comp[r] = {r};
        hist[r].emplace_back(timer, r);
        for (int y : G[r])
            if (y <= r) {
                joinR(y, r);
            }
    }
    
    // for (int v = 0; v < n; ++v)
    //     debug(v, hist[v]);
    
    for (int i = 0; i < Q; ++i) {
        if (qs[i] >= ql[i] && qt[i] <= qr[i])
            queL[ql[i]].push_back(i);
    }
    
    for (int c = 0; c < n; ++c) {
        comp[c].clear();
        where[c] = -1;
    }
    vector<int> ans(Q, 0);
    for (int l = n - 1; l >= 0; --l) {
        where[l] = l;
        comp[l] = {l};
        for (auto el : hist[l])
            kek[l][el.se] = el.fi;
        for (int y : G[l])
            if (y >= l)
                joinL(y, l);
        for (int i : queL[l]) {
            int s = qs[i];
            int t = qt[i];
            int r = qr[i];
            int ct = getCompR(t, r);
            int ws = where[s];
            // debug(ct);
            // debug(ws, comp[ws]);
            // cerr << "kek[ws] = "; for (auto el : kek[ws]) cerr << el << ' '; cerr << endl;
            if (kek[ws].count(ct) && kek[ws][ct] <= r)
                ans[i] = 1;
            /*for (int v : comp[where[s]])
                if (true) {
                    bool good = false;
                    for (auto el : hist[v]) {
                        if (el.se == ct && el.fi <= r) {
                            good = true;
                            break;
                        }
                    }
                    if (good) {
                        ans[i] = 1;
                        break;
                    }
                }*/
        }
    }
    return ans;
}


#ifdef LOCAL

int read_int() {
  int x;
  if (scanf("%d", &x) != 1) {
    fprintf(stderr, "Error while reading input\n");
    exit(1);
  }
  return x;
}

int32_t main() {
#ifdef LOCAL
    freopen("in", "r", stdin);
#endif
    ios::sync_with_stdio(0);
    cin.tie(0);
    
    int N = read_int();
  int M = read_int();
  int Q = read_int();
  std::vector<int> X(M), Y(M), S(Q), E(Q), L(Q), R(Q);
  for (int j = 0; j < M; ++j) {
    X[j] = read_int();
    Y[j] = read_int();
  }
  for (int i = 0; i < Q; ++i) {
    S[i] = read_int();
    E[i] = read_int();
    L[i] = read_int();
    R[i] = read_int();
  }

  std::vector<int> A = check_validity(N, X, Y, S, E, L, R);
  for (size_t i = 0; i < A.size(); ++i) {
    printf("%d\n", A[i]);
  }

    return 0;
}
#endif

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 28492 KB Output is correct
2 Correct 18 ms 28492 KB Output is correct
3 Correct 19 ms 28500 KB Output is correct
4 Correct 20 ms 28364 KB Output is correct
5 Correct 18 ms 28500 KB Output is correct
6 Correct 19 ms 28492 KB Output is correct
7 Correct 19 ms 28492 KB Output is correct
8 Correct 19 ms 28492 KB Output is correct
9 Correct 19 ms 28508 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 28492 KB Output is correct
2 Correct 18 ms 28492 KB Output is correct
3 Correct 19 ms 28500 KB Output is correct
4 Correct 20 ms 28364 KB Output is correct
5 Correct 18 ms 28500 KB Output is correct
6 Correct 19 ms 28492 KB Output is correct
7 Correct 19 ms 28492 KB Output is correct
8 Correct 19 ms 28492 KB Output is correct
9 Correct 19 ms 28508 KB Output is correct
10 Correct 25 ms 29356 KB Output is correct
11 Correct 25 ms 29444 KB Output is correct
12 Correct 26 ms 29900 KB Output is correct
13 Correct 24 ms 29100 KB Output is correct
14 Correct 23 ms 29124 KB Output is correct
15 Correct 29 ms 29484 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1425 ms 161464 KB Output is correct
2 Correct 594 ms 89020 KB Output is correct
3 Correct 640 ms 109952 KB Output is correct
4 Correct 825 ms 127672 KB Output is correct
5 Correct 861 ms 130776 KB Output is correct
6 Correct 1139 ms 141532 KB Output is correct
7 Correct 1379 ms 173164 KB Output is correct
8 Correct 546 ms 97464 KB Output is correct
9 Correct 546 ms 108168 KB Output is correct
10 Correct 835 ms 128268 KB Output is correct
11 Correct 879 ms 130768 KB Output is correct
12 Correct 1000 ms 142080 KB Output is correct
13 Correct 470 ms 86624 KB Output is correct
14 Correct 502 ms 86656 KB Output is correct
15 Correct 472 ms 86788 KB Output is correct
16 Correct 479 ms 86704 KB Output is correct
17 Correct 1309 ms 171140 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 28492 KB Output is correct
2 Correct 18 ms 28492 KB Output is correct
3 Correct 19 ms 28500 KB Output is correct
4 Correct 20 ms 28364 KB Output is correct
5 Correct 18 ms 28500 KB Output is correct
6 Correct 19 ms 28492 KB Output is correct
7 Correct 19 ms 28492 KB Output is correct
8 Correct 19 ms 28492 KB Output is correct
9 Correct 19 ms 28508 KB Output is correct
10 Correct 25 ms 29356 KB Output is correct
11 Correct 25 ms 29444 KB Output is correct
12 Correct 26 ms 29900 KB Output is correct
13 Correct 24 ms 29100 KB Output is correct
14 Correct 23 ms 29124 KB Output is correct
15 Correct 29 ms 29484 KB Output is correct
16 Correct 1425 ms 161464 KB Output is correct
17 Correct 594 ms 89020 KB Output is correct
18 Correct 640 ms 109952 KB Output is correct
19 Correct 825 ms 127672 KB Output is correct
20 Correct 861 ms 130776 KB Output is correct
21 Correct 1139 ms 141532 KB Output is correct
22 Correct 1379 ms 173164 KB Output is correct
23 Correct 546 ms 97464 KB Output is correct
24 Correct 546 ms 108168 KB Output is correct
25 Correct 835 ms 128268 KB Output is correct
26 Correct 879 ms 130768 KB Output is correct
27 Correct 1000 ms 142080 KB Output is correct
28 Correct 470 ms 86624 KB Output is correct
29 Correct 502 ms 86656 KB Output is correct
30 Correct 472 ms 86788 KB Output is correct
31 Correct 479 ms 86704 KB Output is correct
32 Correct 1309 ms 171140 KB Output is correct
33 Correct 1079 ms 114868 KB Output is correct
34 Correct 297 ms 60356 KB Output is correct
35 Correct 858 ms 100920 KB Output is correct
36 Correct 1029 ms 121944 KB Output is correct
37 Correct 894 ms 102576 KB Output is correct
38 Correct 1046 ms 116380 KB Output is correct
39 Correct 559 ms 84408 KB Output is correct
40 Correct 879 ms 104636 KB Output is correct
41 Correct 881 ms 104540 KB Output is correct
42 Correct 979 ms 120492 KB Output is correct
43 Correct 814 ms 97784 KB Output is correct
44 Correct 836 ms 102860 KB Output is correct
45 Correct 457 ms 81260 KB Output is correct
46 Correct 487 ms 82616 KB Output is correct
47 Correct 460 ms 86968 KB Output is correct
48 Correct 455 ms 86936 KB Output is correct
49 Correct 551 ms 86836 KB Output is correct
50 Correct 521 ms 86660 KB Output is correct
51 Correct 824 ms 105908 KB Output is correct
52 Correct 837 ms 105900 KB Output is correct