oj.uz

Submission #1000511

# Submission time Handle Problem Language Result Execution time Memory
1000511 2024-06-17T16:14:11 Z onbert Jail (JOI22_jail) C++17
10 / 100
 1281 ms 288876 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

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

const int maxn = 120005, maxN = 5e5 + 5, lgn = 20, 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;
    for (int v:ADJ[u]) {
        ADJ[v].erase(find(ADJ[v].begin(), ADJ[v].end(), u));
        dfs1(v);
        sz[u] += sz[v];
    }
    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;
        fa[cnter+1] = newid[u];
        dfs2(v);
    }
    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 addd) {
    if (r<findl || findr<l) return;
    if (findl<=l && r<=findr) {
        if (addd) seg[id].insert(val);
        else seg[id].erase(val);
        return;
    }
    int mid = (l+r)/2;
    update(id*2, l, mid, findl, findr, val, addd);
    update(id*2+1, mid+1, r, findl, findr, val, addd);
}
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() > 1) {
            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);
    // for (int i=1;i<=n;i++) {
    //     cout << i << endl;
    //     for (int j=0;j<lgn;j++) {
    //         cout << binlift[i][j].first << " ";
    //         for (auto [L, R]:binlift[i][j].second) cout << L << '.' << R << " ";
    //         cout << endl;
    //         if (binlift[i][j].first==-1) break;
    //     }
    //     cout << endl;
    // }
    // return;
    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(s);
        vector<pair<int,int>> path = PATH(s, t);
        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

# Verdict Execution time Memory Grader output
1 Correct 33 ms 105812 KB Output is correct
2 Correct 32 ms 105820 KB Output is correct
3 Correct 33 ms 105808 KB Output is correct
4 Correct 48 ms 106332 KB Output is correct
5 Correct 62 ms 106576 KB Output is correct
6 Correct 35 ms 106056 KB Output is correct
7 Correct 34 ms 105812 KB Output is correct
8 Correct 36 ms 106064 KB Output is correct
9 Correct 98 ms 110980 KB Output is correct
10 Correct 191 ms 196688 KB Output is correct
11 Correct 41 ms 106076 KB Output is correct
12 Correct 84 ms 106736 KB Output is correct
13 Correct 319 ms 216144 KB Output is correct
14 Correct 268 ms 216052 KB Output is correct
15 Correct 514 ms 235192 KB Output is correct
16 Correct 1281 ms 288876 KB Output is correct
17 Correct 523 ms 247388 KB Output is correct
18 Correct 300 ms 221016 KB Output is correct
19 Correct 488 ms 241632 KB Output is correct
20 Correct 394 ms 241588 KB Output is correct
21 Correct 469 ms 247248 KB Output is correct
22 Correct 214 ms 205236 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 105816 KB Output is correct
2 Correct 34 ms 105804 KB Output is correct
3 Correct 35 ms 106064 KB Output is correct
4 Correct 34 ms 105808 KB Output is correct
5 Correct 33 ms 105812 KB Output is correct
6 Correct 34 ms 105820 KB Output is correct
7 Correct 36 ms 106064 KB Output is correct
8 Correct 35 ms 105820 KB Output is correct
9 Correct 34 ms 105820 KB Output is correct
10 Correct 33 ms 105816 KB Output is correct
11 Correct 35 ms 105820 KB Output is correct
12 Correct 34 ms 105816 KB Output is correct
13 Correct 33 ms 105808 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 105816 KB Output is correct
2 Correct 34 ms 105804 KB Output is correct
3 Correct 35 ms 106064 KB Output is correct
4 Correct 34 ms 105808 KB Output is correct
5 Correct 33 ms 105812 KB Output is correct
6 Correct 34 ms 105820 KB Output is correct
7 Correct 36 ms 106064 KB Output is correct
8 Correct 35 ms 105820 KB Output is correct
9 Correct 34 ms 105820 KB Output is correct
10 Correct 33 ms 105816 KB Output is correct
11 Correct 35 ms 105820 KB Output is correct
12 Correct 34 ms 105816 KB Output is correct
13 Correct 33 ms 105808 KB Output is correct
14 Correct 35 ms 105808 KB Output is correct
15 Correct 32 ms 105816 KB Output is correct
16 Correct 33 ms 106064 KB Output is correct
17 Correct 33 ms 105820 KB Output is correct
18 Correct 35 ms 106076 KB Output is correct
19 Correct 39 ms 105816 KB Output is correct
20 Correct 35 ms 105820 KB Output is correct
21 Correct 33 ms 105968 KB Output is correct
22 Correct 33 ms 105812 KB Output is correct
23 Correct 32 ms 105812 KB Output is correct
24 Runtime error 103 ms 214228 KB Execution killed with signal 11
25 Halted 0 ms 0 KB -

Subtask #4
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 105816 KB Output is correct
2 Correct 34 ms 105804 KB Output is correct
3 Correct 35 ms 106064 KB Output is correct
4 Correct 34 ms 105808 KB Output is correct
5 Correct 33 ms 105812 KB Output is correct
6 Correct 34 ms 105820 KB Output is correct
7 Correct 36 ms 106064 KB Output is correct
8 Correct 35 ms 105820 KB Output is correct
9 Correct 34 ms 105820 KB Output is correct
10 Correct 33 ms 105816 KB Output is correct
11 Correct 35 ms 105820 KB Output is correct
12 Correct 34 ms 105816 KB Output is correct
13 Correct 33 ms 105808 KB Output is correct
14 Correct 35 ms 105808 KB Output is correct
15 Correct 32 ms 105816 KB Output is correct
16 Correct 33 ms 106064 KB Output is correct
17 Correct 33 ms 105820 KB Output is correct
18 Correct 35 ms 106076 KB Output is correct
19 Correct 39 ms 105816 KB Output is correct
20 Correct 35 ms 105820 KB Output is correct
21 Correct 33 ms 105968 KB Output is correct
22 Correct 33 ms 105812 KB Output is correct
23 Correct 32 ms 105812 KB Output is correct
24 Runtime error 103 ms 214228 KB Execution killed with signal 11
25 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 105816 KB Output is correct
2 Correct 34 ms 105804 KB Output is correct
3 Correct 35 ms 106064 KB Output is correct
4 Correct 34 ms 105808 KB Output is correct
5 Correct 33 ms 105812 KB Output is correct
6 Correct 34 ms 105820 KB Output is correct
7 Correct 36 ms 106064 KB Output is correct
8 Correct 35 ms 105820 KB Output is correct
9 Correct 34 ms 105820 KB Output is correct
10 Correct 33 ms 105816 KB Output is correct
11 Correct 35 ms 105820 KB Output is correct
12 Correct 34 ms 105816 KB Output is correct
13 Correct 33 ms 105808 KB Output is correct
14 Correct 35 ms 105808 KB Output is correct
15 Correct 32 ms 105816 KB Output is correct
16 Correct 33 ms 106064 KB Output is correct
17 Correct 33 ms 105820 KB Output is correct
18 Correct 35 ms 106076 KB Output is correct
19 Correct 39 ms 105816 KB Output is correct
20 Correct 35 ms 105820 KB Output is correct
21 Correct 33 ms 105968 KB Output is correct
22 Correct 33 ms 105812 KB Output is correct
23 Correct 32 ms 105812 KB Output is correct
24 Runtime error 103 ms 214228 KB Execution killed with signal 11
25 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 105816 KB Output is correct
2 Correct 38 ms 105816 KB Output is correct
3 Correct 32 ms 105808 KB Output is correct
4 Correct 32 ms 105820 KB Output is correct
5 Correct 42 ms 105812 KB Output is correct
6 Correct 31 ms 106076 KB Output is correct
7 Correct 32 ms 105812 KB Output is correct
8 Correct 41 ms 105804 KB Output is correct
9 Correct 33 ms 105808 KB Output is correct
10 Runtime error 104 ms 214356 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 105812 KB Output is correct
2 Correct 32 ms 105820 KB Output is correct
3 Correct 33 ms 105808 KB Output is correct
4 Correct 48 ms 106332 KB Output is correct
5 Correct 62 ms 106576 KB Output is correct
6 Correct 35 ms 106056 KB Output is correct
7 Correct 34 ms 105812 KB Output is correct
8 Correct 36 ms 106064 KB Output is correct
9 Correct 98 ms 110980 KB Output is correct
10 Correct 191 ms 196688 KB Output is correct
11 Correct 41 ms 106076 KB Output is correct
12 Correct 84 ms 106736 KB Output is correct
13 Correct 319 ms 216144 KB Output is correct
14 Correct 268 ms 216052 KB Output is correct
15 Correct 514 ms 235192 KB Output is correct
16 Correct 1281 ms 288876 KB Output is correct
17 Correct 523 ms 247388 KB Output is correct
18 Correct 300 ms 221016 KB Output is correct
19 Correct 488 ms 241632 KB Output is correct
20 Correct 394 ms 241588 KB Output is correct
21 Correct 469 ms 247248 KB Output is correct
22 Correct 214 ms 205236 KB Output is correct
23 Correct 32 ms 105816 KB Output is correct
24 Correct 34 ms 105804 KB Output is correct
25 Correct 35 ms 106064 KB Output is correct
26 Correct 34 ms 105808 KB Output is correct
27 Correct 33 ms 105812 KB Output is correct
28 Correct 34 ms 105820 KB Output is correct
29 Correct 36 ms 106064 KB Output is correct
30 Correct 35 ms 105820 KB Output is correct
31 Correct 34 ms 105820 KB Output is correct
32 Correct 33 ms 105816 KB Output is correct
33 Correct 35 ms 105820 KB Output is correct
34 Correct 34 ms 105816 KB Output is correct
35 Correct 33 ms 105808 KB Output is correct
36 Correct 35 ms 105808 KB Output is correct
37 Correct 32 ms 105816 KB Output is correct
38 Correct 33 ms 106064 KB Output is correct
39 Correct 33 ms 105820 KB Output is correct
40 Correct 35 ms 106076 KB Output is correct
41 Correct 39 ms 105816 KB Output is correct
42 Correct 35 ms 105820 KB Output is correct
43 Correct 33 ms 105968 KB Output is correct
44 Correct 33 ms 105812 KB Output is correct
45 Correct 32 ms 105812 KB Output is correct
46 Runtime error 103 ms 214228 KB Execution killed with signal 11
47 Halted 0 ms 0 KB -