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Submission #819289

# Submission time Handle Problem Language Result Execution time Memory
819289 2023-08-10T08:57:54 Z vjudge1 Werewolf (IOI18_werewolf) C++17
49 / 100
 1319 ms 67116 KB 
#include<bits/stdc++.h>
#include "werewolf.h"

using namespace std;

template<typename T> 
struct SparseTable {
    vector<vector<T>> st;
    T (*F) (T, T);
    int len;
    void init(vector<T> &a, T(*f)(T, T)) {
        len = (int)a.size();
        int mxpow = 32 - __builtin_clz(len);
        F = f;
        st.resize(mxpow);
        st[0] = a;
        for(int k = 1; k < mxpow; k++) {
            st[k].resize(len - (1 << k) + 1);
            for(int i = 0; i < (int)st[k].size(); i++) 
                st[k][i] = F(st[k - 1][i], st[k - 1][i + (1 << (k - 1))]);
        }
    }
    T get(int l, int r) {
        if(l > r || l < 0 || r >= len) {
            exit(1);
        }
        int k = 31 - __builtin_clz(r - l + 1);
        return F(st[k][l], st[k][r - (1 << k) + 1]);
    }
};


int n, m, q;
const int N = 2e5 + 10;
vector<int> g[N];

vector<int> cnt;
vector<bool> us;
void dfs(int s, int l, int r) {
    us[s] = 1;
    cnt[s]++;
    for(int to : g[s]) {
        if(us[to] || to > r || to < l) continue;
        dfs(to, l, r);
    }
}

vector<int> order;
int tin[N];

void tour(int s, int p) {
    tin[s] = (int)order.size();
    order.push_back(s);
    for(int to : g[s]) 
        if(to != p) 
            tour(to, s);
}

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 = (int)X.size(), q = (int)S.size();
    vector<int> res(q);
    
    for(int i = 0; i < m; i++) {
        g[X[i]].push_back(Y[i]);
        g[Y[i]].push_back(X[i]);
    }

    if(n <= 3000 && q <= 3000 && m <= 6000) {
        for(int i = 0; i < q; i++) {
            cnt.assign(n, 0);
            us.assign(n, false);
            dfs(S[i], L[i], n - 1);
            us.assign(n, false);
            dfs(E[i], 0, R[i]);
            if(*max_element(cnt.begin(), cnt.end()) > 1)
                res[i] = 1;
        }
        return res;
    }
    int root = 0;
    while(root < n && g[root].size() > 1) root++;
    tour(root, root);
    SparseTable<int> mn, mx;
    mn.init(order, [](int a, int b) {return (a > b ? b : a);});
    mx.init(order, [](int a, int b) {return (a < b ? b : a);});

    for(int i = 0; i < q; i++) {
        int x = tin[S[i]], y = tin[E[i]], lb, rb;
        int sl, sr, el, er;
        lb = x, rb = n;
        while(rb - lb > 1) {
            int mid = (lb + rb) / 2;
            if(mn.get(x, mid) >= L[i]) lb = mid;
            else rb = mid;
        }
        sr = lb;
        
        lb = -1, rb = x;
        while(rb - lb > 1) {
            int mid = (lb + rb) / 2;
            if(mn.get(mid, x) >= L[i]) rb = mid;
            else lb = mid;
        }
        sl = rb;
        
        lb = y, rb = n;
        while(rb - lb > 1) {
            int mid = (lb + rb) / 2;
            if(mx.get(y, mid) <= R[i]) lb = mid;
            else rb = mid;
        }
        er = lb;
        
        lb = -1, rb = y;
        while(rb - lb > 1) {
            int mid = (lb + rb) / 2;
            if(mx.get(mid, y) <= R[i]) rb = mid;
            else lb = mid;
        }
        el = rb;
        int ll = max(sl, el), rr = min(sr, er);
        
        res[i] = (ll <= rr);
    }
    return res;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 5004 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 5004 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 214 ms 5272 KB Output is correct
11 Correct 106 ms 5240 KB Output is correct
12 Correct 23 ms 5332 KB Output is correct
13 Correct 232 ms 5276 KB Output is correct
14 Correct 148 ms 5260 KB Output is correct
15 Correct 188 ms 5396 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 1319 ms 58640 KB Output is correct
2 Correct 427 ms 58644 KB Output is correct
3 Correct 479 ms 58644 KB Output is correct
4 Correct 588 ms 67116 KB Output is correct
5 Correct 588 ms 67048 KB Output is correct
6 Correct 1010 ms 67036 KB Output is correct
7 Correct 732 ms 67048 KB Output is correct
8 Correct 413 ms 67036 KB Output is correct
9 Correct 335 ms 67060 KB Output is correct
10 Correct 369 ms 67036 KB Output is correct
11 Correct 392 ms 67024 KB Output is correct
12 Correct 364 ms 67056 KB Output is correct
13 Correct 505 ms 67048 KB Output is correct
14 Correct 493 ms 67048 KB Output is correct
15 Correct 444 ms 67008 KB Output is correct
16 Correct 445 ms 67020 KB Output is correct
17 Correct 674 ms 67052 KB Output is correct

Subtask #4
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 5004 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 214 ms 5272 KB Output is correct
11 Correct 106 ms 5240 KB Output is correct
12 Correct 23 ms 5332 KB Output is correct
13 Correct 232 ms 5276 KB Output is correct
14 Correct 148 ms 5260 KB Output is correct
15 Correct 188 ms 5396 KB Output is correct
16 Correct 1319 ms 58640 KB Output is correct
17 Correct 427 ms 58644 KB Output is correct
18 Correct 479 ms 58644 KB Output is correct
19 Correct 588 ms 67116 KB Output is correct
20 Correct 588 ms 67048 KB Output is correct
21 Correct 1010 ms 67036 KB Output is correct
22 Correct 732 ms 67048 KB Output is correct
23 Correct 413 ms 67036 KB Output is correct
24 Correct 335 ms 67060 KB Output is correct
25 Correct 369 ms 67036 KB Output is correct
26 Correct 392 ms 67024 KB Output is correct
27 Correct 364 ms 67056 KB Output is correct
28 Correct 505 ms 67048 KB Output is correct
29 Correct 493 ms 67048 KB Output is correct
30 Correct 444 ms 67008 KB Output is correct
31 Correct 445 ms 67020 KB Output is correct
32 Correct 674 ms 67052 KB Output is correct
33 Incorrect 1103 ms 57880 KB Output isn't correct
34 Halted 0 ms 0 KB -