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Submission #630457

# Submission time Handle Problem Language Result Execution time Memory
630457 2022-08-16T11:36:47 Z Ooops_sorry Game (APIO22_game) C++17
60 / 100
 4000 ms 50040 KB 
#include<bits/stdc++.h>

using namespace std;

mt19937 rnd(51);

#define ll long long
#define pb push_back
#define ld long double

const int N = 3e5 + 10, INF = 1e9, K = 100;
int n, k, in_block[N], out_block[N], in[N], out[N], block[N], cnt[N];
bool used[N];
vector<int> g[N], gr[N];
bool cycle = 0;
set<int> need;

void dfs_block(int v) {
    if (v >= k && out_block[v] < in_block[v]) {
        cycle = 1;
    }
    if (v >= k && !used[v] && out_block[v] == in_block[v]) {
        need.insert(in_block[v]);
        block[v] = in_block[v];
        used[v] = 1;
    }
    for (auto to : g[v]) {
        if (in_block[v] > in_block[to]) {
            in_block[to] = in_block[v];
            dfs_block(to);
        }
    }
}

void zhfs_block(int v) {
    if (v >= k && out_block[v] < in_block[v]) {
        cycle = 1;
    }
    if (v >= k && !used[v] && out_block[v] == in_block[v]) {
        need.insert(in_block[v]);
        block[v] = in_block[v];
        used[v] = 1;
    }
    for (auto to : gr[v]) {
        if (out_block[v] < out_block[to]) {
            out_block[to] = out_block[v];
            zhfs_block(to);
        }
    }
}

void dfs(int v) {
    cnt[v]++;
    if (v >= k && out[v] <= in[v]) {
        cycle = 1;
    }
    for (auto to : g[v]) {
        if (block[v] == block[to] && in[v] > in[to]) {
            in[to] = in[v];
            dfs(to);
        }
    }
}

void zhfs(int v) {
    cnt[v]++;
    if (v >= k && out[v] <= in[v]) {
        cycle = 1;
    }
    for (auto to : gr[v]) {
        if (block[v] == block[to] && out[v] < out[to]) {
            out[to] = out[v];
            zhfs(to);
        }
    }
}

int add_teleporter(int u, int v) {
    if (max(u, v) < k) {
        if (u >= v) {
            cycle = 1;
        }
    } else {
        g[u].pb(v);
        gr[v].pb(u);
        if (in_block[v] < in_block[u]) {
            in_block[v] = in_block[u];
            dfs_block(v);
        }
        if (out_block[u] > out_block[v]) {
            out_block[u] = out_block[v];
            zhfs_block(u);
        }
        for (auto v : need) {
            for (int vert = v * K; vert < min(k, (v + 1) * K); vert++) {
                zhfs(vert);
                dfs(vert);
            }
        }
        need.clear();
        if (block[v] == block[u] && in[v] < in[u]) {
            in[v] = in[u];
            dfs(v);
        }
        if (block[v] == block[u] && out[u] > out[v]) {
            out[u] = out[v];
            zhfs(u);
        }
    }
    return cycle;
}

void init(int n_, int k_) {
    n = n_, k = k_;
    for (int i = 0; i < n; i++) {
        in_block[i] = -INF, out_block[i] = INF;
        in[i] = -INF, out[i] = INF;
        block[i] = -(i + 1);
    }
    for (int i = 0; i < k; i++) {
        in_block[i] = out_block[i] = block[i] = i / K;
        in[i] = out[i] = i;
        if (i + 1 < k) {
            add_teleporter(i, i + 1);
        }
    }
}

#ifdef LOCAL

signed main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
#endif // LOCAL
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m, k;
    cin >> n >> m >> k;
    vector<pair<int,int>> e(m);
    for (int i = 0; i < m; i++) {
        cin >> e[i].first >> e[i].second;
    }
    init(n, k);
    int i;
    for (i = 0; i < m; i++) {
        int res = add_teleporter(e[i].first, e[i].second);
        assert(res == 0 || res == 1);
        if (res == 1) {
            break;
        }
    }
    cout << i << endl;
    return 0;
}

#endif // LOCAL

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14416 KB Output is correct
2 Correct 7 ms 14416 KB Output is correct
3 Correct 7 ms 14416 KB Output is correct
4 Correct 7 ms 14416 KB Output is correct
5 Correct 8 ms 14392 KB Output is correct
6 Correct 8 ms 14416 KB Output is correct
7 Correct 7 ms 14416 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14416 KB Output is correct
2 Correct 7 ms 14416 KB Output is correct
3 Correct 7 ms 14416 KB Output is correct
4 Correct 7 ms 14416 KB Output is correct
5 Correct 8 ms 14392 KB Output is correct
6 Correct 8 ms 14416 KB Output is correct
7 Correct 7 ms 14416 KB Output is correct
8 Correct 7 ms 14416 KB Output is correct
9 Correct 7 ms 14416 KB Output is correct
10 Correct 7 ms 14432 KB Output is correct
11 Correct 7 ms 14416 KB Output is correct
12 Correct 7 ms 14416 KB Output is correct
13 Correct 7 ms 14416 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 8 ms 14436 KB Output is correct
16 Correct 8 ms 14416 KB Output is correct
17 Correct 8 ms 14512 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 7 ms 14440 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14416 KB Output is correct
2 Correct 7 ms 14416 KB Output is correct
3 Correct 7 ms 14416 KB Output is correct
4 Correct 7 ms 14416 KB Output is correct
5 Correct 8 ms 14392 KB Output is correct
6 Correct 8 ms 14416 KB Output is correct
7 Correct 7 ms 14416 KB Output is correct
8 Correct 7 ms 14416 KB Output is correct
9 Correct 7 ms 14416 KB Output is correct
10 Correct 7 ms 14432 KB Output is correct
11 Correct 7 ms 14416 KB Output is correct
12 Correct 7 ms 14416 KB Output is correct
13 Correct 7 ms 14416 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 8 ms 14436 KB Output is correct
16 Correct 8 ms 14416 KB Output is correct
17 Correct 8 ms 14512 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 7 ms 14440 KB Output is correct
20 Correct 7 ms 14416 KB Output is correct
21 Correct 7 ms 14416 KB Output is correct
22 Correct 7 ms 14416 KB Output is correct
23 Correct 7 ms 14416 KB Output is correct
24 Correct 8 ms 14416 KB Output is correct
25 Correct 11 ms 14544 KB Output is correct
26 Correct 10 ms 14552 KB Output is correct
27 Correct 11 ms 14536 KB Output is correct
28 Correct 11 ms 14500 KB Output is correct
29 Correct 9 ms 14416 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14416 KB Output is correct
2 Correct 7 ms 14416 KB Output is correct
3 Correct 7 ms 14416 KB Output is correct
4 Correct 7 ms 14416 KB Output is correct
5 Correct 8 ms 14392 KB Output is correct
6 Correct 8 ms 14416 KB Output is correct
7 Correct 7 ms 14416 KB Output is correct
8 Correct 7 ms 14416 KB Output is correct
9 Correct 7 ms 14416 KB Output is correct
10 Correct 7 ms 14432 KB Output is correct
11 Correct 7 ms 14416 KB Output is correct
12 Correct 7 ms 14416 KB Output is correct
13 Correct 7 ms 14416 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 8 ms 14436 KB Output is correct
16 Correct 8 ms 14416 KB Output is correct
17 Correct 8 ms 14512 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 7 ms 14440 KB Output is correct
20 Correct 7 ms 14416 KB Output is correct
21 Correct 7 ms 14416 KB Output is correct
22 Correct 7 ms 14416 KB Output is correct
23 Correct 7 ms 14416 KB Output is correct
24 Correct 8 ms 14416 KB Output is correct
25 Correct 11 ms 14544 KB Output is correct
26 Correct 10 ms 14552 KB Output is correct
27 Correct 11 ms 14536 KB Output is correct
28 Correct 11 ms 14500 KB Output is correct
29 Correct 9 ms 14416 KB Output is correct
30 Correct 26 ms 16240 KB Output is correct
31 Correct 12 ms 15304 KB Output is correct
32 Correct 27 ms 17864 KB Output is correct
33 Correct 24 ms 17012 KB Output is correct
34 Correct 55 ms 18724 KB Output is correct
35 Correct 70 ms 17604 KB Output is correct
36 Correct 49 ms 17092 KB Output is correct
37 Correct 53 ms 17096 KB Output is correct
38 Correct 52 ms 16768 KB Output is correct
39 Correct 76 ms 16776 KB Output is correct
40 Correct 50 ms 19020 KB Output is correct
41 Correct 47 ms 17232 KB Output is correct
42 Correct 35 ms 17172 KB Output is correct
43 Correct 48 ms 18760 KB Output is correct
44 Correct 85 ms 18700 KB Output is correct

Subtask #5
0.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14416 KB Output is correct
2 Correct 7 ms 14416 KB Output is correct
3 Correct 7 ms 14416 KB Output is correct
4 Correct 7 ms 14416 KB Output is correct
5 Correct 8 ms 14392 KB Output is correct
6 Correct 8 ms 14416 KB Output is correct
7 Correct 7 ms 14416 KB Output is correct
8 Correct 7 ms 14416 KB Output is correct
9 Correct 7 ms 14416 KB Output is correct
10 Correct 7 ms 14432 KB Output is correct
11 Correct 7 ms 14416 KB Output is correct
12 Correct 7 ms 14416 KB Output is correct
13 Correct 7 ms 14416 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 8 ms 14436 KB Output is correct
16 Correct 8 ms 14416 KB Output is correct
17 Correct 8 ms 14512 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 7 ms 14440 KB Output is correct
20 Correct 7 ms 14416 KB Output is correct
21 Correct 7 ms 14416 KB Output is correct
22 Correct 7 ms 14416 KB Output is correct
23 Correct 7 ms 14416 KB Output is correct
24 Correct 8 ms 14416 KB Output is correct
25 Correct 11 ms 14544 KB Output is correct
26 Correct 10 ms 14552 KB Output is correct
27 Correct 11 ms 14536 KB Output is correct
28 Correct 11 ms 14500 KB Output is correct
29 Correct 9 ms 14416 KB Output is correct
30 Correct 26 ms 16240 KB Output is correct
31 Correct 12 ms 15304 KB Output is correct
32 Correct 27 ms 17864 KB Output is correct
33 Correct 24 ms 17012 KB Output is correct
34 Correct 55 ms 18724 KB Output is correct
35 Correct 70 ms 17604 KB Output is correct
36 Correct 49 ms 17092 KB Output is correct
37 Correct 53 ms 17096 KB Output is correct
38 Correct 52 ms 16768 KB Output is correct
39 Correct 76 ms 16776 KB Output is correct
40 Correct 50 ms 19020 KB Output is correct
41 Correct 47 ms 17232 KB Output is correct
42 Correct 35 ms 17172 KB Output is correct
43 Correct 48 ms 18760 KB Output is correct
44 Correct 85 ms 18700 KB Output is correct
45 Correct 228 ms 32044 KB Output is correct
46 Correct 18 ms 20688 KB Output is correct
47 Correct 19 ms 20644 KB Output is correct
48 Correct 434 ms 50040 KB Output is correct
49 Correct 256 ms 40372 KB Output is correct
50 Execution timed out 4025 ms 39704 KB Time limit exceeded
51 Halted 0 ms 0 KB -