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답안 #630455

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
630455 2022-08-16T11:34:21 Z Ooops_sorry 게임 (APIO22_game) C++17
60 / 100
 4000 ms 49940 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 = 500;
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]++;
    assert(v < k || cnt[v] <= N / K);
    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]++;
    assert(v < k || cnt[v] <= N / K);
    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

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 14312 KB Output is correct
2 Correct 8 ms 14416 KB Output is correct
3 Correct 10 ms 14416 KB Output is correct
4 Correct 8 ms 14388 KB Output is correct
5 Correct 7 ms 14312 KB Output is correct
6 Correct 8 ms 14416 KB Output is correct
7 Correct 8 ms 14416 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 14312 KB Output is correct
2 Correct 8 ms 14416 KB Output is correct
3 Correct 10 ms 14416 KB Output is correct
4 Correct 8 ms 14388 KB Output is correct
5 Correct 7 ms 14312 KB Output is correct
6 Correct 8 ms 14416 KB Output is correct
7 Correct 8 ms 14416 KB Output is correct
8 Correct 11 ms 14416 KB Output is correct
9 Correct 8 ms 14416 KB Output is correct
10 Correct 8 ms 14412 KB Output is correct
11 Correct 8 ms 14452 KB Output is correct
12 Correct 8 ms 14416 KB Output is correct
13 Correct 7 ms 14320 KB Output is correct
14 Correct 9 ms 14444 KB Output is correct
15 Correct 9 ms 14428 KB Output is correct
16 Correct 10 ms 14420 KB Output is correct
17 Correct 11 ms 14416 KB Output is correct
18 Correct 9 ms 14416 KB Output is correct
19 Correct 11 ms 14384 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 14312 KB Output is correct
2 Correct 8 ms 14416 KB Output is correct
3 Correct 10 ms 14416 KB Output is correct
4 Correct 8 ms 14388 KB Output is correct
5 Correct 7 ms 14312 KB Output is correct
6 Correct 8 ms 14416 KB Output is correct
7 Correct 8 ms 14416 KB Output is correct
8 Correct 11 ms 14416 KB Output is correct
9 Correct 8 ms 14416 KB Output is correct
10 Correct 8 ms 14412 KB Output is correct
11 Correct 8 ms 14452 KB Output is correct
12 Correct 8 ms 14416 KB Output is correct
13 Correct 7 ms 14320 KB Output is correct
14 Correct 9 ms 14444 KB Output is correct
15 Correct 9 ms 14428 KB Output is correct
16 Correct 10 ms 14420 KB Output is correct
17 Correct 11 ms 14416 KB Output is correct
18 Correct 9 ms 14416 KB Output is correct
19 Correct 11 ms 14384 KB Output is correct
20 Correct 9 ms 14452 KB Output is correct
21 Correct 8 ms 14424 KB Output is correct
22 Correct 10 ms 14460 KB Output is correct
23 Correct 9 ms 14444 KB Output is correct
24 Correct 13 ms 14416 KB Output is correct
25 Correct 14 ms 14484 KB Output is correct
26 Correct 11 ms 14508 KB Output is correct
27 Correct 19 ms 14512 KB Output is correct
28 Correct 10 ms 14464 KB Output is correct
29 Correct 12 ms 14528 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 14312 KB Output is correct
2 Correct 8 ms 14416 KB Output is correct
3 Correct 10 ms 14416 KB Output is correct
4 Correct 8 ms 14388 KB Output is correct
5 Correct 7 ms 14312 KB Output is correct
6 Correct 8 ms 14416 KB Output is correct
7 Correct 8 ms 14416 KB Output is correct
8 Correct 11 ms 14416 KB Output is correct
9 Correct 8 ms 14416 KB Output is correct
10 Correct 8 ms 14412 KB Output is correct
11 Correct 8 ms 14452 KB Output is correct
12 Correct 8 ms 14416 KB Output is correct
13 Correct 7 ms 14320 KB Output is correct
14 Correct 9 ms 14444 KB Output is correct
15 Correct 9 ms 14428 KB Output is correct
16 Correct 10 ms 14420 KB Output is correct
17 Correct 11 ms 14416 KB Output is correct
18 Correct 9 ms 14416 KB Output is correct
19 Correct 11 ms 14384 KB Output is correct
20 Correct 9 ms 14452 KB Output is correct
21 Correct 8 ms 14424 KB Output is correct
22 Correct 10 ms 14460 KB Output is correct
23 Correct 9 ms 14444 KB Output is correct
24 Correct 13 ms 14416 KB Output is correct
25 Correct 14 ms 14484 KB Output is correct
26 Correct 11 ms 14508 KB Output is correct
27 Correct 19 ms 14512 KB Output is correct
28 Correct 10 ms 14464 KB Output is correct
29 Correct 12 ms 14528 KB Output is correct
30 Correct 28 ms 16152 KB Output is correct
31 Correct 13 ms 15352 KB Output is correct
32 Correct 37 ms 17872 KB Output is correct
33 Correct 25 ms 16980 KB Output is correct
34 Correct 48 ms 18748 KB Output is correct
35 Correct 209 ms 17620 KB Output is correct
36 Correct 79 ms 17036 KB Output is correct
37 Correct 81 ms 16980 KB Output is correct
38 Correct 199 ms 16692 KB Output is correct
39 Correct 259 ms 16808 KB Output is correct
40 Correct 86 ms 18716 KB Output is correct
41 Correct 128 ms 17272 KB Output is correct
42 Correct 48 ms 17036 KB Output is correct
43 Correct 59 ms 18040 KB Output is correct
44 Correct 282 ms 18876 KB Output is correct

Subtask #5
0.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 14312 KB Output is correct
2 Correct 8 ms 14416 KB Output is correct
3 Correct 10 ms 14416 KB Output is correct
4 Correct 8 ms 14388 KB Output is correct
5 Correct 7 ms 14312 KB Output is correct
6 Correct 8 ms 14416 KB Output is correct
7 Correct 8 ms 14416 KB Output is correct
8 Correct 11 ms 14416 KB Output is correct
9 Correct 8 ms 14416 KB Output is correct
10 Correct 8 ms 14412 KB Output is correct
11 Correct 8 ms 14452 KB Output is correct
12 Correct 8 ms 14416 KB Output is correct
13 Correct 7 ms 14320 KB Output is correct
14 Correct 9 ms 14444 KB Output is correct
15 Correct 9 ms 14428 KB Output is correct
16 Correct 10 ms 14420 KB Output is correct
17 Correct 11 ms 14416 KB Output is correct
18 Correct 9 ms 14416 KB Output is correct
19 Correct 11 ms 14384 KB Output is correct
20 Correct 9 ms 14452 KB Output is correct
21 Correct 8 ms 14424 KB Output is correct
22 Correct 10 ms 14460 KB Output is correct
23 Correct 9 ms 14444 KB Output is correct
24 Correct 13 ms 14416 KB Output is correct
25 Correct 14 ms 14484 KB Output is correct
26 Correct 11 ms 14508 KB Output is correct
27 Correct 19 ms 14512 KB Output is correct
28 Correct 10 ms 14464 KB Output is correct
29 Correct 12 ms 14528 KB Output is correct
30 Correct 28 ms 16152 KB Output is correct
31 Correct 13 ms 15352 KB Output is correct
32 Correct 37 ms 17872 KB Output is correct
33 Correct 25 ms 16980 KB Output is correct
34 Correct 48 ms 18748 KB Output is correct
35 Correct 209 ms 17620 KB Output is correct
36 Correct 79 ms 17036 KB Output is correct
37 Correct 81 ms 16980 KB Output is correct
38 Correct 199 ms 16692 KB Output is correct
39 Correct 259 ms 16808 KB Output is correct
40 Correct 86 ms 18716 KB Output is correct
41 Correct 128 ms 17272 KB Output is correct
42 Correct 48 ms 17036 KB Output is correct
43 Correct 59 ms 18040 KB Output is correct
44 Correct 282 ms 18876 KB Output is correct
45 Correct 317 ms 31944 KB Output is correct
46 Correct 19 ms 20700 KB Output is correct
47 Correct 20 ms 20680 KB Output is correct
48 Correct 492 ms 49940 KB Output is correct
49 Correct 300 ms 40352 KB Output is correct
50 Execution timed out 4011 ms 41548 KB Time limit exceeded
51 Halted 0 ms 0 KB -