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답안 #1000471

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1000471 2024-06-17T14:37:36 Z onbert Jail (JOI22_jail) C++17
54 / 100
 1283 ms 276560 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

void add(vector<pair<int,int>> &v, pair<int,int> x) {
    if (v.size() > 0 && x.second+1 == v.back().first) v.back().first = x.first;
    else v.push_back(x);
}

const int maxn = 120005, maxN = 480005, lgn = 17, INF = 1e18;
int n, m;
vector<int> ADJ[maxn], adj[maxn];
pair<int,int> a[maxn];
int sz[maxn], fa[maxn], d[maxn], newid[maxn], lim[maxn], cnter = 0;

bool cmp(int x, int y) {
    return sz[x] < sz[y];
}

void dfs1(int u) {
    sz[u] = 1;
    int f = -1;
    for (int v:ADJ[u]) {
        if (sz[v]) {
            f = v;
            continue;
        }
        dfs1(v);
        sz[u] += sz[v];
    }
    if (f!=-1) ADJ[u].erase(find(ADJ[u].begin(), ADJ[u].end(), f));
    sort(ADJ[u].begin(), ADJ[u].end(), cmp);
}
void dfs2(int u) {
    cnter++;
    newid[u] = cnter;
    for (int v:ADJ[u]) {
        d[cnter+1] = d[newid[u]] + 1;
        dfs2(v);
        fa[newid[v]] = newid[u];
    }
    lim[newid[u]] = cnter;
}
pair<int, vector<pair<int,int>>> binlift[maxn][lgn];
void dfs3(int u) {
    for (int i=1;i<lgn;i++) {
        if (binlift[u][i-1].first==-1 || binlift[binlift[u][i-1].first][i-1].first==-1) break;
        binlift[u][i].first = binlift[binlift[u][i-1].first][i-1].first;
        binlift[u][i].second = binlift[u][i-1].second;
        for (auto [L, R]:binlift[binlift[u][i-1].first][i-1].second) add(binlift[u][i].second, {L, R});
    }
    for (int v:adj[u]) {
        binlift[v][0] = {u, {{u, u}}};
        dfs3(v);
    }
}
vector<pair<int,int>> PATH(int u, int v) {
    if (d[u] > d[v]) swap(u, v);
    vector<pair<int,int>> U = {{u, u}}, V = {{v, v}};
    for (int i=lgn-1;i>=0;i--) if (d[v] - (1<<i) >= d[u]) {
        for (auto [L, R]:binlift[v][i].second) add(V, {L, R});
        v = binlift[v][i].first;
    }
    if (u==v) return V;
    for (int i=lgn-1;i>=0;i--) if (binlift[u][i].first != binlift[v][i].first) {
        for (auto [L, R]:binlift[u][i].second) add(U, {L, R});
        u = binlift[u][i].first;
        for (auto [L, R]:binlift[v][i].second) add(V, {L, R});
        v = binlift[v][i].first;
    }
    add(V, {fa[v], fa[v]});
    for (auto [L, R]:U) V.push_back({L, R});
    return V;
}

set<int> seg[maxN];
void build(int id, int l, int r) {
    seg[id].clear();
    if (l==r) return;
    int mid = (l+r)/2;
    build(id*2, l, mid); build(id*2+1, mid+1, r);
}
void update(int id, int l, int r, int findl, int findr, int val, bool add) {
    if (r<findl || findr<l) return;
    if (findl<=l && r<=findr) {
        if (add) seg[id].insert(val);
        else seg[id].erase(val);
        return;
    }
    int mid = (l+r)/2;
    update(id*2, l, mid, findl, findr, val, add);
    update(id*2+1, mid+1, r, findl, findr, val, add);
}
vector<int> nxt;
void qry(int id, int l, int r, int target) {
    if (r<target || target<l) return;
    for (int i:seg[id]) nxt.push_back(i);
    if (l==r) return;
    int mid = (l+r)/2;
    qry(id*2, l, mid, target); qry(id*2+1, mid+1, r, target);
}

int S[maxn], T[maxn], vis[maxn];
bool die = false;
set<int> exist;

void dfs4(int u) {
    int s = a[u].first, t = a[u].second;
    vis[u] = 1;
    vector<pair<int,int>> path = PATH(s, t);
    for (auto [L, R]:path) {
        int cur = L-1;
        while (exist.size() > 0) {
            cur = *exist.upper_bound(cur);
            if (cur > R) break;
            if (cur==s) continue;
            int v = S[cur];
            // cout << u << " " << v << endl;
            if (!vis[v]) dfs4(v);
            else if (vis[v]==1) die = true;
            if (die) return;
        }
    }
    nxt.clear();
    qry(1, 1, n, t);
    for (int v:nxt) if (v!=u) {
        // cout << u << " " << v << endl;
        if (!vis[v]) dfs4(v);
        else if (vis[v]==1) die = true;
        if (die) return;
    }
    for (auto [L, R]:path) update(1, 1, n, L, R, u, 0);
    exist.erase(s);
    vis[u] = 2;
}

void solve() {
    cin >> n;
    for (int i=1;i<=n;i++) sz[i] = 0, adj[i].clear(), ADJ[i].clear();
    cnter = 0;
    for (int i=1;i<=n-1;i++) {
        int u, v;
        cin >> u >> v;
        ADJ[u].push_back(v);
        ADJ[v].push_back(u);
    }
    fa[1] = 0, d[1] = 0;
    dfs1(1); dfs2(1);
    for (int i=1;i<=n;i++) for (int j:ADJ[i]) adj[newid[i]].push_back(newid[j]);
    for (int i=1;i<=n;i++) for (int j=0;j<lgn;j++) binlift[i][j] = {-1, {}};
    dfs3(1);
    exist = {INF};
    build(1, 1, n);
    for (int i=1;i<=n;i++) S[i] = -1, T[i] = -1;
    cin >> m;
    for (int i=1;i<=m;i++) {
        int s, t;
        cin >> s >> t;
        s = newid[s], t = newid[t];
        a[i] = {s, t};
        S[s] = T[t] = i;
        exist.insert(a[i].first);
        vector<pair<int,int>> path = PATH(a[i].first, a[i].second);
        for (auto [L, R]:path) update(1, 1, n, L, R, i, 1);
    }
    for (int i=1;i<=m;i++) vis[i] = 0;
    die = false;
    for (int i=1;i<=m;i++) if (!vis[i]) {
        dfs4(i);
        if (die) break;
    }
    if (die) cout << "No\n";
    else cout << "Yes\n";
}

signed main() {
    ios::sync_with_stdio(0); cin.tie(0);
    int t;
    cin >> t;
    while (t--) solve();
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 95580 KB Output is correct
2 Correct 17 ms 95452 KB Output is correct
3 Correct 17 ms 95528 KB Output is correct
4 Correct 31 ms 95580 KB Output is correct
5 Correct 70 ms 96248 KB Output is correct
6 Correct 18 ms 95580 KB Output is correct
7 Correct 18 ms 95680 KB Output is correct
8 Correct 19 ms 95600 KB Output is correct
9 Correct 79 ms 100692 KB Output is correct
10 Correct 154 ms 184656 KB Output is correct
11 Correct 24 ms 95576 KB Output is correct
12 Correct 68 ms 96596 KB Output is correct
13 Correct 298 ms 203856 KB Output is correct
14 Correct 234 ms 203856 KB Output is correct
15 Correct 477 ms 222956 KB Output is correct
16 Correct 1186 ms 276560 KB Output is correct
17 Correct 487 ms 235180 KB Output is correct
18 Correct 280 ms 208864 KB Output is correct
19 Correct 400 ms 229200 KB Output is correct
20 Correct 371 ms 229456 KB Output is correct
21 Correct 431 ms 234964 KB Output is correct
22 Correct 183 ms 192848 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 95576 KB Output is correct
2 Correct 16 ms 95580 KB Output is correct
3 Correct 19 ms 95580 KB Output is correct
4 Correct 19 ms 95832 KB Output is correct
5 Correct 19 ms 95836 KB Output is correct
6 Correct 20 ms 95836 KB Output is correct
7 Correct 19 ms 95836 KB Output is correct
8 Correct 18 ms 95836 KB Output is correct
9 Correct 19 ms 95832 KB Output is correct
10 Correct 21 ms 95836 KB Output is correct
11 Correct 18 ms 95836 KB Output is correct
12 Correct 17 ms 95580 KB Output is correct
13 Correct 17 ms 95548 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 95576 KB Output is correct
2 Correct 16 ms 95580 KB Output is correct
3 Correct 19 ms 95580 KB Output is correct
4 Correct 19 ms 95832 KB Output is correct
5 Correct 19 ms 95836 KB Output is correct
6 Correct 20 ms 95836 KB Output is correct
7 Correct 19 ms 95836 KB Output is correct
8 Correct 18 ms 95836 KB Output is correct
9 Correct 19 ms 95832 KB Output is correct
10 Correct 21 ms 95836 KB Output is correct
11 Correct 18 ms 95836 KB Output is correct
12 Correct 17 ms 95580 KB Output is correct
13 Correct 17 ms 95548 KB Output is correct
14 Correct 15 ms 95580 KB Output is correct
15 Correct 16 ms 95580 KB Output is correct
16 Correct 18 ms 95644 KB Output is correct
17 Correct 18 ms 95580 KB Output is correct
18 Correct 26 ms 95836 KB Output is correct
19 Correct 19 ms 95580 KB Output is correct
20 Correct 20 ms 95832 KB Output is correct
21 Correct 19 ms 96088 KB Output is correct
22 Correct 18 ms 95580 KB Output is correct
23 Correct 17 ms 95576 KB Output is correct
24 Correct 17 ms 95576 KB Output is correct
25 Correct 17 ms 95832 KB Output is correct
26 Correct 16 ms 95580 KB Output is correct
27 Correct 17 ms 95576 KB Output is correct
28 Correct 17 ms 95592 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 95576 KB Output is correct
2 Correct 16 ms 95580 KB Output is correct
3 Correct 19 ms 95580 KB Output is correct
4 Correct 19 ms 95832 KB Output is correct
5 Correct 19 ms 95836 KB Output is correct
6 Correct 20 ms 95836 KB Output is correct
7 Correct 19 ms 95836 KB Output is correct
8 Correct 18 ms 95836 KB Output is correct
9 Correct 19 ms 95832 KB Output is correct
10 Correct 21 ms 95836 KB Output is correct
11 Correct 18 ms 95836 KB Output is correct
12 Correct 17 ms 95580 KB Output is correct
13 Correct 17 ms 95548 KB Output is correct
14 Correct 15 ms 95580 KB Output is correct
15 Correct 16 ms 95580 KB Output is correct
16 Correct 18 ms 95644 KB Output is correct
17 Correct 18 ms 95580 KB Output is correct
18 Correct 26 ms 95836 KB Output is correct
19 Correct 19 ms 95580 KB Output is correct
20 Correct 20 ms 95832 KB Output is correct
21 Correct 19 ms 96088 KB Output is correct
22 Correct 18 ms 95580 KB Output is correct
23 Correct 17 ms 95576 KB Output is correct
24 Correct 17 ms 95576 KB Output is correct
25 Correct 17 ms 95832 KB Output is correct
26 Correct 16 ms 95580 KB Output is correct
27 Correct 17 ms 95576 KB Output is correct
28 Correct 17 ms 95592 KB Output is correct
29 Correct 18 ms 95836 KB Output is correct
30 Correct 20 ms 95664 KB Output is correct
31 Correct 23 ms 96092 KB Output is correct
32 Correct 25 ms 96092 KB Output is correct
33 Correct 18 ms 95836 KB Output is correct
34 Correct 22 ms 95936 KB Output is correct
35 Correct 39 ms 95836 KB Output is correct
36 Correct 19 ms 95576 KB Output is correct
37 Correct 19 ms 95576 KB Output is correct

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 95576 KB Output is correct
2 Correct 16 ms 95580 KB Output is correct
3 Correct 19 ms 95580 KB Output is correct
4 Correct 19 ms 95832 KB Output is correct
5 Correct 19 ms 95836 KB Output is correct
6 Correct 20 ms 95836 KB Output is correct
7 Correct 19 ms 95836 KB Output is correct
8 Correct 18 ms 95836 KB Output is correct
9 Correct 19 ms 95832 KB Output is correct
10 Correct 21 ms 95836 KB Output is correct
11 Correct 18 ms 95836 KB Output is correct
12 Correct 17 ms 95580 KB Output is correct
13 Correct 17 ms 95548 KB Output is correct
14 Correct 15 ms 95580 KB Output is correct
15 Correct 16 ms 95580 KB Output is correct
16 Correct 18 ms 95644 KB Output is correct
17 Correct 18 ms 95580 KB Output is correct
18 Correct 26 ms 95836 KB Output is correct
19 Correct 19 ms 95580 KB Output is correct
20 Correct 20 ms 95832 KB Output is correct
21 Correct 19 ms 96088 KB Output is correct
22 Correct 18 ms 95580 KB Output is correct
23 Correct 17 ms 95576 KB Output is correct
24 Correct 17 ms 95576 KB Output is correct
25 Correct 17 ms 95832 KB Output is correct
26 Correct 16 ms 95580 KB Output is correct
27 Correct 17 ms 95576 KB Output is correct
28 Correct 17 ms 95592 KB Output is correct
29 Correct 18 ms 95836 KB Output is correct
30 Correct 20 ms 95664 KB Output is correct
31 Correct 23 ms 96092 KB Output is correct
32 Correct 25 ms 96092 KB Output is correct
33 Correct 18 ms 95836 KB Output is correct
34 Correct 22 ms 95936 KB Output is correct
35 Correct 39 ms 95836 KB Output is correct
36 Correct 19 ms 95576 KB Output is correct
37 Correct 19 ms 95576 KB Output is correct
38 Correct 81 ms 100768 KB Output is correct
39 Correct 160 ms 184532 KB Output is correct
40 Correct 1283 ms 249184 KB Output is correct
41 Correct 127 ms 99668 KB Output is correct
42 Correct 77 ms 100012 KB Output is correct
43 Correct 886 ms 243040 KB Output is correct
44 Incorrect 57 ms 96592 KB Output isn't correct
45 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 95576 KB Output is correct
2 Correct 17 ms 95580 KB Output is correct
3 Correct 17 ms 95624 KB Output is correct
4 Correct 15 ms 95580 KB Output is correct
5 Correct 24 ms 95576 KB Output is correct
6 Correct 17 ms 95580 KB Output is correct
7 Correct 18 ms 95704 KB Output is correct
8 Correct 16 ms 95580 KB Output is correct
9 Correct 17 ms 95424 KB Output is correct
10 Correct 17 ms 95580 KB Output is correct
11 Correct 16 ms 95580 KB Output is correct
12 Correct 19 ms 95580 KB Output is correct
13 Correct 62 ms 96184 KB Output is correct
14 Correct 107 ms 96436 KB Output is correct
15 Incorrect 85 ms 96196 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 95580 KB Output is correct
2 Correct 17 ms 95452 KB Output is correct
3 Correct 17 ms 95528 KB Output is correct
4 Correct 31 ms 95580 KB Output is correct
5 Correct 70 ms 96248 KB Output is correct
6 Correct 18 ms 95580 KB Output is correct
7 Correct 18 ms 95680 KB Output is correct
8 Correct 19 ms 95600 KB Output is correct
9 Correct 79 ms 100692 KB Output is correct
10 Correct 154 ms 184656 KB Output is correct
11 Correct 24 ms 95576 KB Output is correct
12 Correct 68 ms 96596 KB Output is correct
13 Correct 298 ms 203856 KB Output is correct
14 Correct 234 ms 203856 KB Output is correct
15 Correct 477 ms 222956 KB Output is correct
16 Correct 1186 ms 276560 KB Output is correct
17 Correct 487 ms 235180 KB Output is correct
18 Correct 280 ms 208864 KB Output is correct
19 Correct 400 ms 229200 KB Output is correct
20 Correct 371 ms 229456 KB Output is correct
21 Correct 431 ms 234964 KB Output is correct
22 Correct 183 ms 192848 KB Output is correct
23 Correct 16 ms 95576 KB Output is correct
24 Correct 16 ms 95580 KB Output is correct
25 Correct 19 ms 95580 KB Output is correct
26 Correct 19 ms 95832 KB Output is correct
27 Correct 19 ms 95836 KB Output is correct
28 Correct 20 ms 95836 KB Output is correct
29 Correct 19 ms 95836 KB Output is correct
30 Correct 18 ms 95836 KB Output is correct
31 Correct 19 ms 95832 KB Output is correct
32 Correct 21 ms 95836 KB Output is correct
33 Correct 18 ms 95836 KB Output is correct
34 Correct 17 ms 95580 KB Output is correct
35 Correct 17 ms 95548 KB Output is correct
36 Correct 15 ms 95580 KB Output is correct
37 Correct 16 ms 95580 KB Output is correct
38 Correct 18 ms 95644 KB Output is correct
39 Correct 18 ms 95580 KB Output is correct
40 Correct 26 ms 95836 KB Output is correct
41 Correct 19 ms 95580 KB Output is correct
42 Correct 20 ms 95832 KB Output is correct
43 Correct 19 ms 96088 KB Output is correct
44 Correct 18 ms 95580 KB Output is correct
45 Correct 17 ms 95576 KB Output is correct
46 Correct 17 ms 95576 KB Output is correct
47 Correct 17 ms 95832 KB Output is correct
48 Correct 16 ms 95580 KB Output is correct
49 Correct 17 ms 95576 KB Output is correct
50 Correct 17 ms 95592 KB Output is correct
51 Correct 18 ms 95836 KB Output is correct
52 Correct 20 ms 95664 KB Output is correct
53 Correct 23 ms 96092 KB Output is correct
54 Correct 25 ms 96092 KB Output is correct
55 Correct 18 ms 95836 KB Output is correct
56 Correct 22 ms 95936 KB Output is correct
57 Correct 39 ms 95836 KB Output is correct
58 Correct 19 ms 95576 KB Output is correct
59 Correct 19 ms 95576 KB Output is correct
60 Correct 81 ms 100768 KB Output is correct
61 Correct 160 ms 184532 KB Output is correct
62 Correct 1283 ms 249184 KB Output is correct
63 Correct 127 ms 99668 KB Output is correct
64 Correct 77 ms 100012 KB Output is correct
65 Correct 886 ms 243040 KB Output is correct
66 Incorrect 57 ms 96592 KB Output isn't correct
67 Halted 0 ms 0 KB -