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Submission #630456

# Submission time Handle Problem Language Result Execution time Memory
630456 2022-08-16T11:35:12 Z Ooops_sorry Game (APIO22_game) C++17
60 / 100
 4000 ms 50084 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 = 700;
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 9 ms 14416 KB Output is correct
3 Correct 8 ms 14416 KB Output is correct
4 Correct 8 ms 14344 KB Output is correct
5 Correct 8 ms 14416 KB Output is correct
6 Correct 9 ms 14416 KB Output is correct
7 Correct 8 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 9 ms 14416 KB Output is correct
3 Correct 8 ms 14416 KB Output is correct
4 Correct 8 ms 14344 KB Output is correct
5 Correct 8 ms 14416 KB Output is correct
6 Correct 9 ms 14416 KB Output is correct
7 Correct 8 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 8 ms 14416 KB Output is correct
11 Correct 9 ms 14440 KB Output is correct
12 Correct 9 ms 14440 KB Output is correct
13 Correct 9 ms 14336 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 8 ms 14416 KB Output is correct
16 Correct 8 ms 14356 KB Output is correct
17 Correct 10 ms 14416 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 8 ms 14416 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 9 ms 14416 KB Output is correct
3 Correct 8 ms 14416 KB Output is correct
4 Correct 8 ms 14344 KB Output is correct
5 Correct 8 ms 14416 KB Output is correct
6 Correct 9 ms 14416 KB Output is correct
7 Correct 8 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 8 ms 14416 KB Output is correct
11 Correct 9 ms 14440 KB Output is correct
12 Correct 9 ms 14440 KB Output is correct
13 Correct 9 ms 14336 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 8 ms 14416 KB Output is correct
16 Correct 8 ms 14356 KB Output is correct
17 Correct 10 ms 14416 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 8 ms 14416 KB Output is correct
20 Correct 8 ms 14416 KB Output is correct
21 Correct 8 ms 14416 KB Output is correct
22 Correct 8 ms 14416 KB Output is correct
23 Correct 10 ms 14500 KB Output is correct
24 Correct 11 ms 14416 KB Output is correct
25 Correct 11 ms 14464 KB Output is correct
26 Correct 11 ms 14544 KB Output is correct
27 Correct 16 ms 14416 KB Output is correct
28 Correct 11 ms 14416 KB Output is correct
29 Correct 13 ms 14460 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 9 ms 14416 KB Output is correct
3 Correct 8 ms 14416 KB Output is correct
4 Correct 8 ms 14344 KB Output is correct
5 Correct 8 ms 14416 KB Output is correct
6 Correct 9 ms 14416 KB Output is correct
7 Correct 8 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 8 ms 14416 KB Output is correct
11 Correct 9 ms 14440 KB Output is correct
12 Correct 9 ms 14440 KB Output is correct
13 Correct 9 ms 14336 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 8 ms 14416 KB Output is correct
16 Correct 8 ms 14356 KB Output is correct
17 Correct 10 ms 14416 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 8 ms 14416 KB Output is correct
20 Correct 8 ms 14416 KB Output is correct
21 Correct 8 ms 14416 KB Output is correct
22 Correct 8 ms 14416 KB Output is correct
23 Correct 10 ms 14500 KB Output is correct
24 Correct 11 ms 14416 KB Output is correct
25 Correct 11 ms 14464 KB Output is correct
26 Correct 11 ms 14544 KB Output is correct
27 Correct 16 ms 14416 KB Output is correct
28 Correct 11 ms 14416 KB Output is correct
29 Correct 13 ms 14460 KB Output is correct
30 Correct 22 ms 16220 KB Output is correct
31 Correct 11 ms 15364 KB Output is correct
32 Correct 26 ms 17872 KB Output is correct
33 Correct 26 ms 16964 KB Output is correct
34 Correct 793 ms 18796 KB Output is correct
35 Correct 270 ms 17688 KB Output is correct
36 Correct 48 ms 16976 KB Output is correct
37 Correct 56 ms 17008 KB Output is correct
38 Correct 127 ms 16868 KB Output is correct
39 Correct 150 ms 16860 KB Output is correct
40 Correct 695 ms 18752 KB Output is correct
41 Correct 137 ms 17268 KB Output is correct
42 Correct 94 ms 17092 KB Output is correct
43 Correct 68 ms 18340 KB Output is correct
44 Correct 353 ms 18876 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 9 ms 14416 KB Output is correct
3 Correct 8 ms 14416 KB Output is correct
4 Correct 8 ms 14344 KB Output is correct
5 Correct 8 ms 14416 KB Output is correct
6 Correct 9 ms 14416 KB Output is correct
7 Correct 8 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 8 ms 14416 KB Output is correct
11 Correct 9 ms 14440 KB Output is correct
12 Correct 9 ms 14440 KB Output is correct
13 Correct 9 ms 14336 KB Output is correct
14 Correct 7 ms 14416 KB Output is correct
15 Correct 8 ms 14416 KB Output is correct
16 Correct 8 ms 14356 KB Output is correct
17 Correct 10 ms 14416 KB Output is correct
18 Correct 7 ms 14416 KB Output is correct
19 Correct 8 ms 14416 KB Output is correct
20 Correct 8 ms 14416 KB Output is correct
21 Correct 8 ms 14416 KB Output is correct
22 Correct 8 ms 14416 KB Output is correct
23 Correct 10 ms 14500 KB Output is correct
24 Correct 11 ms 14416 KB Output is correct
25 Correct 11 ms 14464 KB Output is correct
26 Correct 11 ms 14544 KB Output is correct
27 Correct 16 ms 14416 KB Output is correct
28 Correct 11 ms 14416 KB Output is correct
29 Correct 13 ms 14460 KB Output is correct
30 Correct 22 ms 16220 KB Output is correct
31 Correct 11 ms 15364 KB Output is correct
32 Correct 26 ms 17872 KB Output is correct
33 Correct 26 ms 16964 KB Output is correct
34 Correct 793 ms 18796 KB Output is correct
35 Correct 270 ms 17688 KB Output is correct
36 Correct 48 ms 16976 KB Output is correct
37 Correct 56 ms 17008 KB Output is correct
38 Correct 127 ms 16868 KB Output is correct
39 Correct 150 ms 16860 KB Output is correct
40 Correct 695 ms 18752 KB Output is correct
41 Correct 137 ms 17268 KB Output is correct
42 Correct 94 ms 17092 KB Output is correct
43 Correct 68 ms 18340 KB Output is correct
44 Correct 353 ms 18876 KB Output is correct
45 Correct 293 ms 31876 KB Output is correct
46 Correct 16 ms 20688 KB Output is correct
47 Correct 16 ms 20616 KB Output is correct
48 Correct 475 ms 50084 KB Output is correct
49 Correct 260 ms 40392 KB Output is correct
50 Execution timed out 4100 ms 42556 KB Time limit exceeded
51 Halted 0 ms 0 KB -