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Submission #678353

# Submission time Handle Problem Language Result Execution time Memory
678353 2023-01-05T14:13:21 Z 1bin Werewolf (IOI18_werewolf) C++14
100 / 100
 846 ms 116992 KB 
#include <bits/stdc++.h>

using namespace std;

#define all(v) v.begin(), v.end()
typedef long long ll;
const int B = 1 << 18;
ll n, m, q, par[B], a, b, d[B][2], u[B][2], t;
vector<int> adj[B], seg[B * 2];
vector<int> g[B], vl[B], vr[B];
int find(int x){return par[x] == -1 ? x : par[x] = find(par[x]);}

void dfs(int x, int f){
    !f ? d[x][0] = t++ : u[x][0] = t++;
    for(int& nx : g[x]) dfs(nx, f);
    !f ? d[x][1] = t - 1 : u[x][1] = t - 1;
    return;
}

int qry(int l, int r, int k){
    l += B; r += B;
    int ret = n;
    while(l <= r){
        if(l & 1){
            auto it = lower_bound(all(seg[l]), k);
            if(it != seg[l].end()) ret = min(ret, *it);
            l++;
        }
        if(!(r & 1)){
            auto it = lower_bound(all(seg[r]), k);
            if(it != seg[r].end()) ret = min(ret, *it);
            r--;
        }
        l /= 2; r /= 2;
    }
    return ret;
}

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();
	vector<int> A(q);
	for(int i = 0; i < m; i++){
	    a = X[i]; b = Y[i];
	    adj[a].emplace_back(b);
	    adj[b].emplace_back(a);
	}
	for(int i = 0; i < q; i++){
	   vl[L[i]].emplace_back(i);
	   vr[R[i]].emplace_back(i);
	}
	memset(par, -1, sizeof(par));
    for(int x = n - 1; x >= 0; x--){
        for(int y : adj[x]){
            if(y < x) continue;
            y = find(y);
            if(x == y) continue;
            par[y] = x;
            g[x].emplace_back(y);
        }
        for(int& i : vl[x])
            S[i] = find(S[i]);
    }
    dfs(0, 0);
    
    memset(par, -1, sizeof(par));
    for(int i = 0; i < n; i++) g[i].clear();
    for(int x = 0; x < n; x++) {
        for(int y : adj[x]){
            if(y > x) continue;
            y = find(y);
            if(x == y) continue;
            par[y] = x;
            g[x].emplace_back(y);
        }
        for(int& i : vr[x])
            E[i] = find(E[i]);
    }
    t = 0; dfs(n - 1, 1);
    for(int i = 0; i < n; i++) seg[B + u[i][0]].emplace_back(d[i][0]);
    for(int i = B - 1; i; i--){
        seg[i].resize(seg[i * 2].size() + seg[i * 2 + 1].size());
        merge(all(seg[i * 2]), all(seg[i * 2 + 1]), seg[i].begin());
    }

    for(int i = 0; i < q; i++){
        a = u[E[i]][0]; b = u[E[i]][1];
        if(qry(a, b, d[S[i]][0]) <= d[S[i]][1]) A[i] = 1;
        else A[i] = 0;
        //cout << i << ' ' << A[i] << '\n';
    }
	return A;
}

/*
int main(void){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    
    cin >> n >> m >> q;
    vector<int> X(m), Y(m), S(q), E(q), L(q), R(q), ans;
    for(int i = 0; i < m; i++) cin >> X[i] >> Y[i];
    for(int i = 0; i < q; i++) cin >> S[i] >> E[i] >> L[i] >> R[i];
    ans = check_validity(n, X, Y, S, E, L, R);
    for(int i = 0; i < q; i++) cout << ans[i] << ' ';
    return 0;
}*/

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 39252 KB Output is correct
2 Correct 20 ms 39288 KB Output is correct
3 Correct 21 ms 39276 KB Output is correct
4 Correct 19 ms 39296 KB Output is correct
5 Correct 19 ms 39252 KB Output is correct
6 Correct 19 ms 39284 KB Output is correct
7 Correct 20 ms 39292 KB Output is correct
8 Correct 19 ms 39252 KB Output is correct
9 Correct 24 ms 39252 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 39252 KB Output is correct
2 Correct 20 ms 39288 KB Output is correct
3 Correct 21 ms 39276 KB Output is correct
4 Correct 19 ms 39296 KB Output is correct
5 Correct 19 ms 39252 KB Output is correct
6 Correct 19 ms 39284 KB Output is correct
7 Correct 20 ms 39292 KB Output is correct
8 Correct 19 ms 39252 KB Output is correct
9 Correct 24 ms 39252 KB Output is correct
10 Correct 25 ms 40276 KB Output is correct
11 Correct 26 ms 40324 KB Output is correct
12 Correct 24 ms 40292 KB Output is correct
13 Correct 26 ms 40464 KB Output is correct
14 Correct 27 ms 40444 KB Output is correct
15 Correct 25 ms 40384 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 558 ms 98808 KB Output is correct
2 Correct 604 ms 110692 KB Output is correct
3 Correct 658 ms 108436 KB Output is correct
4 Correct 599 ms 107460 KB Output is correct
5 Correct 590 ms 107400 KB Output is correct
6 Correct 554 ms 107220 KB Output is correct
7 Correct 475 ms 104980 KB Output is correct
8 Correct 575 ms 110704 KB Output is correct
9 Correct 501 ms 107268 KB Output is correct
10 Correct 437 ms 106088 KB Output is correct
11 Correct 407 ms 106164 KB Output is correct
12 Correct 561 ms 106948 KB Output is correct
13 Correct 572 ms 111936 KB Output is correct
14 Correct 527 ms 111940 KB Output is correct
15 Correct 544 ms 111968 KB Output is correct
16 Correct 569 ms 111972 KB Output is correct
17 Correct 464 ms 104908 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 39252 KB Output is correct
2 Correct 20 ms 39288 KB Output is correct
3 Correct 21 ms 39276 KB Output is correct
4 Correct 19 ms 39296 KB Output is correct
5 Correct 19 ms 39252 KB Output is correct
6 Correct 19 ms 39284 KB Output is correct
7 Correct 20 ms 39292 KB Output is correct
8 Correct 19 ms 39252 KB Output is correct
9 Correct 24 ms 39252 KB Output is correct
10 Correct 25 ms 40276 KB Output is correct
11 Correct 26 ms 40324 KB Output is correct
12 Correct 24 ms 40292 KB Output is correct
13 Correct 26 ms 40464 KB Output is correct
14 Correct 27 ms 40444 KB Output is correct
15 Correct 25 ms 40384 KB Output is correct
16 Correct 558 ms 98808 KB Output is correct
17 Correct 604 ms 110692 KB Output is correct
18 Correct 658 ms 108436 KB Output is correct
19 Correct 599 ms 107460 KB Output is correct
20 Correct 590 ms 107400 KB Output is correct
21 Correct 554 ms 107220 KB Output is correct
22 Correct 475 ms 104980 KB Output is correct
23 Correct 575 ms 110704 KB Output is correct
24 Correct 501 ms 107268 KB Output is correct
25 Correct 437 ms 106088 KB Output is correct
26 Correct 407 ms 106164 KB Output is correct
27 Correct 561 ms 106948 KB Output is correct
28 Correct 572 ms 111936 KB Output is correct
29 Correct 527 ms 111940 KB Output is correct
30 Correct 544 ms 111968 KB Output is correct
31 Correct 569 ms 111972 KB Output is correct
32 Correct 464 ms 104908 KB Output is correct
33 Correct 691 ms 108356 KB Output is correct
34 Correct 270 ms 72552 KB Output is correct
35 Correct 772 ms 111108 KB Output is correct
36 Correct 599 ms 107888 KB Output is correct
37 Correct 768 ms 110120 KB Output is correct
38 Correct 645 ms 108460 KB Output is correct
39 Correct 735 ms 116992 KB Output is correct
40 Correct 593 ms 114324 KB Output is correct
41 Correct 617 ms 109596 KB Output is correct
42 Correct 441 ms 106612 KB Output is correct
43 Correct 846 ms 114880 KB Output is correct
44 Correct 688 ms 110204 KB Output is correct
45 Correct 577 ms 115992 KB Output is correct
46 Correct 625 ms 115904 KB Output is correct
47 Correct 547 ms 112108 KB Output is correct
48 Correct 555 ms 111824 KB Output is correct
49 Correct 531 ms 112076 KB Output is correct
50 Correct 557 ms 111936 KB Output is correct
51 Correct 534 ms 112960 KB Output is correct
52 Correct 517 ms 112872 KB Output is correct