oj.uz

Submission #1083659

# Submission time Handle Problem Language Result Execution time Memory
1083659 2024-09-03T18:16:22 Z ShaShi Jail (JOI22_jail) C++17
49 / 100
 740 ms 784560 KB 
#include <bits/stdc++.h>
 
// #define int long long
 
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")
 
#define F first 
#define S second
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
#define kill(x) cout << x << "\n", exit(0);
#define pii pair<int, int>
#define endl "\n"
 
 
 
using namespace std;
typedef long long ll;
typedef __int128_t lll;
typedef long double ld;
 
const int MAXN = (int)2e5 + 23;
const int MOD = 998244353;
const ll INF = (ll)1e9 + 7;
const int LG = 18;


int n, m, k, tmp, t, tmp2, tmp3, tmp4, u, v, w, flag, q, ans, flag2;
pii arr[MAXN]; int par[MAXN], h[MAXN], pow2dad[MAXN][LG], fake_t[MAXN][LG], fake_s[MAXN][LG], ind_s[MAXN], ind_t[MAXN];
vector<int> adj[MAXN], G[MAXN*40];
int seen[MAXN*40];


inline void add_edge(int u, int v) { G[u].pb(v); }
inline int up(int v, int k) { for (int i=LG-1; i>=0; i--) if (k >= (1<<i)) k -= (1<<i), v = pow2dad[v][i]; return v; }
inline int LCA(int u, int v) { if (h[u] < h[v]) swap(u, v); u = up(u, h[u]-h[v]); if (u == v) return u; for (int i=LG-1; i>=0; i--) if (h[u] >= (1<<i) && pow2dad[u][i] != pow2dad[v][i]) u = pow2dad[u][i], v = pow2dad[v][i]; return pow2dad[u][0]; }



void DFS(int v) {
    for (int u:adj[v]) {
        if (u == par[v]) continue;

        par[u] = v; h[u] = h[v]+1; DFS(u);
    }
}


void DFS2(int v) {
    seen[v] = 1;

    for (int u:G[v]) {
        if (seen[u] == 0) DFS2(u);
        else if (seen[u] == 1) tmp = 0;
    }

    seen[v] = 2;
}


inline void up_s(int v, int k, int ind) {
    // cout << "S : " << v << " " << k << " " << ind << endl;

    for (int i=LG-1; i>=0; i--) {
        if ((1<<i) <= k) {
            k -= (1<<i); add_edge(fake_s[v][i], ind); v = pow2dad[v][i];
        }
    }
}


inline void up_t(int v, int k, int ind) {
    // cout << "T : " << v << " " << k << " " << ind << endl;

    for (int i=LG-1; i>=0; i--) {
        if ((1<<i) <= k) {
            k -= (1<<i); add_edge(ind, fake_t[v][i]); v = pow2dad[v][i];
        }
    }
}


void solve() {
    cin >> n;

    for (int i=1; i<n; i++) {
        cin >> u >> v;

        adj[u].pb(v); adj[v].pb(u);
    }

    cin >> m;

    for (int i=1; i<=m; i++) {
        cin >> u >> v;

        ind_s[u] = i; ind_t[v] = i; arr[i] = {u, v};
    }

    DFS(1); flag = n+1;

    for (int i=1; i<=n; i++) {
        pow2dad[i][0] = par[i];

        fake_s[i][0] = flag++; if (ind_s[i]) add_edge(ind_s[i], fake_s[i][0]);
        fake_t[i][0] = flag++; if (ind_t[i]) add_edge(fake_t[i][0], ind_t[i]);
    }

    for (int j=1; j<LG; j++) {
        for (int i=1; i<=n; i++) {
            pow2dad[i][j] = pow2dad[pow2dad[i][j-1]][j-1];

            fake_s[i][j] = flag++; add_edge(fake_s[i][j-1], fake_s[i][j]); add_edge(fake_s[pow2dad[i][j-1]][j-1], fake_s[i][j]);
            fake_t[i][j] = flag++; add_edge(fake_t[i][j], fake_t[i][j-1]); add_edge(fake_t[i][j], fake_t[pow2dad[i][j-1]][j-1]);
        }
    }


    for (int i=1; i<=m; i++) {
        u = arr[i].F; v = arr[i].S;

        int lca = LCA(u, v);

        if (lca == u) {
            up_s(v, h[v]-h[u], i);
            up_t(par[v], h[v]-h[u], i);
        } else if (lca == v) {
            up_s(par[u], h[u]-h[v], i);
            up_t(u, h[u]-h[v], i);
        } else {
            up_s(par[u], h[u]-h[lca], i); up_t(u, h[u]-h[lca]+1, i);
            up_s(v, h[v]-h[lca]+1, i); up_t(par[v], h[v]-h[lca], i);
        }
    }


    tmp = 1;
    
    for (int i=1; i<=n; i++) {
        if (seen[i]) continue;

        DFS2(i);

        if (!tmp) break;
    }

    cout << (tmp? "Yes\n" : "No\n");

    fill_n(seen, flag+7, 0);  fill_n(ind_s, flag+7, 0); fill_n(ind_t, flag+7, 0);  fill_n(par, flag+7, 0); 
    for (int i=0; i<=n+7; i++) adj[i].clear(); for (int i=0; i<=flag+7; i++) G[i].clear(); flag = tmp = 0;
}


int32_t main() {
    #ifdef LOCAL
    freopen("inp.in", "r", stdin);
    freopen("res.out", "w", stdout);
    #else
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #endif

    cin >> t;

    while (t--) solve();

    return 0;
}

Compilation message

jail.cpp: In function 'void solve()':
jail.cpp:153:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  153 |     for (int i=0; i<=n+7; i++) adj[i].clear(); for (int i=0; i<=flag+7; i++) G[i].clear(); flag = tmp = 0;
      |     ^~~
jail.cpp:153:48: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  153 |     for (int i=0; i<=n+7; i++) adj[i].clear(); for (int i=0; i<=flag+7; i++) G[i].clear(); flag = tmp = 0;
      |                                                ^~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 193008 KB Output is correct
2 Correct 80 ms 192852 KB Output is correct
3 Correct 76 ms 192852 KB Output is correct
4 Correct 104 ms 193572 KB Output is correct
5 Correct 126 ms 193872 KB Output is correct
6 Correct 83 ms 193620 KB Output is correct
7 Correct 80 ms 193620 KB Output is correct
8 Correct 79 ms 193656 KB Output is correct
9 Correct 197 ms 205904 KB Output is correct
10 Runtime error 740 ms 782792 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 192852 KB Output is correct
2 Correct 82 ms 192848 KB Output is correct
3 Correct 85 ms 193500 KB Output is correct
4 Correct 80 ms 193620 KB Output is correct
5 Correct 78 ms 193616 KB Output is correct
6 Correct 77 ms 193384 KB Output is correct
7 Correct 85 ms 193616 KB Output is correct
8 Correct 80 ms 193616 KB Output is correct
9 Correct 81 ms 193616 KB Output is correct
10 Correct 82 ms 193544 KB Output is correct
11 Correct 81 ms 193620 KB Output is correct
12 Correct 80 ms 193576 KB Output is correct
13 Correct 79 ms 193616 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 192852 KB Output is correct
2 Correct 82 ms 192848 KB Output is correct
3 Correct 85 ms 193500 KB Output is correct
4 Correct 80 ms 193620 KB Output is correct
5 Correct 78 ms 193616 KB Output is correct
6 Correct 77 ms 193384 KB Output is correct
7 Correct 85 ms 193616 KB Output is correct
8 Correct 80 ms 193616 KB Output is correct
9 Correct 81 ms 193616 KB Output is correct
10 Correct 82 ms 193544 KB Output is correct
11 Correct 81 ms 193620 KB Output is correct
12 Correct 80 ms 193576 KB Output is correct
13 Correct 79 ms 193616 KB Output is correct
14 Correct 72 ms 193036 KB Output is correct
15 Correct 75 ms 192848 KB Output is correct
16 Correct 85 ms 193480 KB Output is correct
17 Correct 85 ms 193488 KB Output is correct
18 Correct 81 ms 193620 KB Output is correct
19 Correct 80 ms 193056 KB Output is correct
20 Correct 80 ms 193600 KB Output is correct
21 Correct 85 ms 193872 KB Output is correct
22 Correct 79 ms 193620 KB Output is correct
23 Correct 74 ms 193104 KB Output is correct
24 Correct 78 ms 193184 KB Output is correct
25 Correct 87 ms 193628 KB Output is correct
26 Correct 80 ms 193472 KB Output is correct
27 Correct 82 ms 193508 KB Output is correct
28 Correct 79 ms 193104 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 192852 KB Output is correct
2 Correct 82 ms 192848 KB Output is correct
3 Correct 85 ms 193500 KB Output is correct
4 Correct 80 ms 193620 KB Output is correct
5 Correct 78 ms 193616 KB Output is correct
6 Correct 77 ms 193384 KB Output is correct
7 Correct 85 ms 193616 KB Output is correct
8 Correct 80 ms 193616 KB Output is correct
9 Correct 81 ms 193616 KB Output is correct
10 Correct 82 ms 193544 KB Output is correct
11 Correct 81 ms 193620 KB Output is correct
12 Correct 80 ms 193576 KB Output is correct
13 Correct 79 ms 193616 KB Output is correct
14 Correct 72 ms 193036 KB Output is correct
15 Correct 75 ms 192848 KB Output is correct
16 Correct 85 ms 193480 KB Output is correct
17 Correct 85 ms 193488 KB Output is correct
18 Correct 81 ms 193620 KB Output is correct
19 Correct 80 ms 193056 KB Output is correct
20 Correct 80 ms 193600 KB Output is correct
21 Correct 85 ms 193872 KB Output is correct
22 Correct 79 ms 193620 KB Output is correct
23 Correct 74 ms 193104 KB Output is correct
24 Correct 78 ms 193184 KB Output is correct
25 Correct 87 ms 193628 KB Output is correct
26 Correct 80 ms 193472 KB Output is correct
27 Correct 82 ms 193508 KB Output is correct
28 Correct 79 ms 193104 KB Output is correct
29 Correct 80 ms 193568 KB Output is correct
30 Correct 85 ms 193424 KB Output is correct
31 Correct 81 ms 193540 KB Output is correct
32 Correct 83 ms 193616 KB Output is correct
33 Correct 85 ms 193652 KB Output is correct
34 Correct 84 ms 193524 KB Output is correct
35 Correct 75 ms 193364 KB Output is correct
36 Correct 85 ms 193364 KB Output is correct
37 Correct 85 ms 193364 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 192852 KB Output is correct
2 Correct 82 ms 192848 KB Output is correct
3 Correct 85 ms 193500 KB Output is correct
4 Correct 80 ms 193620 KB Output is correct
5 Correct 78 ms 193616 KB Output is correct
6 Correct 77 ms 193384 KB Output is correct
7 Correct 85 ms 193616 KB Output is correct
8 Correct 80 ms 193616 KB Output is correct
9 Correct 81 ms 193616 KB Output is correct
10 Correct 82 ms 193544 KB Output is correct
11 Correct 81 ms 193620 KB Output is correct
12 Correct 80 ms 193576 KB Output is correct
13 Correct 79 ms 193616 KB Output is correct
14 Correct 72 ms 193036 KB Output is correct
15 Correct 75 ms 192848 KB Output is correct
16 Correct 85 ms 193480 KB Output is correct
17 Correct 85 ms 193488 KB Output is correct
18 Correct 81 ms 193620 KB Output is correct
19 Correct 80 ms 193056 KB Output is correct
20 Correct 80 ms 193600 KB Output is correct
21 Correct 85 ms 193872 KB Output is correct
22 Correct 79 ms 193620 KB Output is correct
23 Correct 74 ms 193104 KB Output is correct
24 Correct 78 ms 193184 KB Output is correct
25 Correct 87 ms 193628 KB Output is correct
26 Correct 80 ms 193472 KB Output is correct
27 Correct 82 ms 193508 KB Output is correct
28 Correct 79 ms 193104 KB Output is correct
29 Correct 80 ms 193568 KB Output is correct
30 Correct 85 ms 193424 KB Output is correct
31 Correct 81 ms 193540 KB Output is correct
32 Correct 83 ms 193616 KB Output is correct
33 Correct 85 ms 193652 KB Output is correct
34 Correct 84 ms 193524 KB Output is correct
35 Correct 75 ms 193364 KB Output is correct
36 Correct 85 ms 193364 KB Output is correct
37 Correct 85 ms 193364 KB Output is correct
38 Correct 184 ms 205924 KB Output is correct
39 Runtime error 738 ms 782444 KB Execution killed with signal 11
40 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 82 ms 192848 KB Output is correct
2 Correct 80 ms 192924 KB Output is correct
3 Correct 75 ms 193104 KB Output is correct
4 Correct 79 ms 192852 KB Output is correct
5 Correct 84 ms 193240 KB Output is correct
6 Correct 84 ms 193360 KB Output is correct
7 Correct 83 ms 193360 KB Output is correct
8 Correct 74 ms 193000 KB Output is correct
9 Correct 76 ms 193008 KB Output is correct
10 Correct 75 ms 193108 KB Output is correct
11 Correct 80 ms 193012 KB Output is correct
12 Correct 73 ms 193360 KB Output is correct
13 Correct 108 ms 193828 KB Output is correct
14 Correct 123 ms 193964 KB Output is correct
15 Correct 118 ms 193876 KB Output is correct
16 Runtime error 629 ms 784560 KB Execution killed with signal 11
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 193008 KB Output is correct
2 Correct 80 ms 192852 KB Output is correct
3 Correct 76 ms 192852 KB Output is correct
4 Correct 104 ms 193572 KB Output is correct
5 Correct 126 ms 193872 KB Output is correct
6 Correct 83 ms 193620 KB Output is correct
7 Correct 80 ms 193620 KB Output is correct
8 Correct 79 ms 193656 KB Output is correct
9 Correct 197 ms 205904 KB Output is correct
10 Runtime error 740 ms 782792 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -