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Submission #527322

# Submission time Handle Problem Language Result Execution time Memory
527322 2022-02-17T07:07:22 Z jalsol Birthday gift (IZhO18_treearray) C++11
30 / 100
 4000 ms 16536 KB 
#include <bits/stdc++.h>

using namespace std;

#define Task ""

struct __Init__ {
    __Init__() {
        cin.tie(nullptr)->sync_with_stdio(false);
        if (fopen(Task".inp", "r")) {
            freopen(Task".inp", "r", stdin);
            freopen(Task".out", "w", stdout); }
    }
} __init__;

using ll = long long;

#ifdef LOCAL
#define debug(x) cerr << "[" #x " = " << x << "]\n";
#else
#define debug(...)
#endif // LOCAL

#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define fi first
#define se second

#define For(i, l, r) for (int i = (l); i <= (r); ++i)
#define Ford(i, r, l) for (int i = (r); i >= (l); --i)
#define Rep(i, n) For (i, 0, (n) - 1)
#define Repd(i, n) Ford (i, (n) - 1, 0)

template<class C> int isz(const C& c) { return c.size(); }
template<class T> bool chmin(T& a, const T& b) { if (a > b) { a = b; return true; } return false; }
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } return false; }

constexpr int eps = 1e-9;
constexpr int inf = 1e9;
constexpr ll linf = 1e18;

// =============================================================================

constexpr int maxN = 2000 + 5;
constexpr int logN = 20;

int n, m, nq;
vector<int> g[maxN];
int a[maxN];

int par[maxN][logN];
int dep[maxN];

int lca[maxN][maxN];

void Dfs(int u) {
    for (int v : g[u]) if (v != par[u][0]) {
        par[v][0] = u;
        dep[v] = dep[u] + 1;
        Dfs(v);
    }
}

int getLca(int u, int v) {
    if (dep[u] < dep[v]) swap(u, v);

    Repd (i, logN) if ((dep[u] - dep[v]) >> i & 1) {
        u = par[u][i];
    }

    if (u == v) return u;

    Repd (i, logN) if (par[u][i] != par[v][i]) {
        u = par[u][i];
        v = par[v][i];
    }

    return par[u][0];
}

signed main() {
    cin >> n >> m >> nq;

    Rep (_, n - 1) {
        int u, v; cin >> u >> v;
        g[u].push_back(v);
        g[v].push_back(u);
    }

    For (i, 1, m) cin >> a[i];

    Dfs(1);

    For (j, 1, logN - 1) {
        For (i, 1, n) {
            par[i][j] = par[par[i][j - 1]][j - 1];
        }
    }

    For (i, 1, n) {
        For (j, i, n) {
            lca[i][j] = lca[j][i] = getLca(i, j);
        }
    }

    Rep (_, nq) {
        int op; cin >> op;

        if (op == 1) {
            int p, x; cin >> p >> x;
            a[p] = x;
        } else {
            int l, r, v; cin >> l >> r >> v;

            int ansL = -1, ansR = -1;

            For (i, l, r) {
                int node = a[i];

                For (j, i, r) {
                    node = lca[node][a[j]];

                    if (node == v) {
                        ansL = i;
                        ansR = j;
                        break;
                    }
                }

                if (ansL != -1) break;
            }

            cout << ansL << ' ' << ansR << '\n';
        }
    }
}

/*

*/

Compilation message

treearray.cpp: In constructor '__Init__::__Init__()':
treearray.cpp:11:20: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |             freopen(Task".inp", "r", stdin);
      |             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
treearray.cpp:12:20: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |             freopen(Task".out", "w", stdout); }
      |             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB n=5
2 Correct 1 ms 716 KB n=100
3 Correct 1 ms 716 KB n=100
4 Correct 1 ms 716 KB n=100
5 Correct 1 ms 716 KB n=100
6 Correct 2 ms 716 KB n=100
7 Correct 2 ms 716 KB n=100
8 Correct 1 ms 716 KB n=100
9 Correct 1 ms 716 KB n=100
10 Correct 2 ms 716 KB n=100
11 Correct 2 ms 716 KB n=100
12 Correct 1 ms 716 KB n=100
13 Correct 1 ms 716 KB n=100
14 Correct 1 ms 716 KB n=100
15 Correct 1 ms 716 KB n=100
16 Correct 1 ms 716 KB n=100
17 Correct 1 ms 716 KB n=100
18 Correct 1 ms 716 KB n=100
19 Correct 1 ms 716 KB n=100
20 Correct 1 ms 716 KB n=100
21 Correct 1 ms 716 KB n=100
22 Correct 1 ms 716 KB n=100
23 Correct 1 ms 832 KB n=100
24 Correct 1 ms 716 KB n=100
25 Correct 1 ms 716 KB n=100
26 Correct 1 ms 332 KB n=12
27 Correct 1 ms 716 KB n=100

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB n=5
2 Correct 1 ms 716 KB n=100
3 Correct 1 ms 716 KB n=100
4 Correct 1 ms 716 KB n=100
5 Correct 1 ms 716 KB n=100
6 Correct 2 ms 716 KB n=100
7 Correct 2 ms 716 KB n=100
8 Correct 1 ms 716 KB n=100
9 Correct 1 ms 716 KB n=100
10 Correct 2 ms 716 KB n=100
11 Correct 2 ms 716 KB n=100
12 Correct 1 ms 716 KB n=100
13 Correct 1 ms 716 KB n=100
14 Correct 1 ms 716 KB n=100
15 Correct 1 ms 716 KB n=100
16 Correct 1 ms 716 KB n=100
17 Correct 1 ms 716 KB n=100
18 Correct 1 ms 716 KB n=100
19 Correct 1 ms 716 KB n=100
20 Correct 1 ms 716 KB n=100
21 Correct 1 ms 716 KB n=100
22 Correct 1 ms 716 KB n=100
23 Correct 1 ms 832 KB n=100
24 Correct 1 ms 716 KB n=100
25 Correct 1 ms 716 KB n=100
26 Correct 1 ms 332 KB n=12
27 Correct 1 ms 716 KB n=100
28 Correct 10 ms 3364 KB n=500
29 Correct 23 ms 3344 KB n=500
30 Correct 19 ms 3376 KB n=500
31 Correct 21 ms 3404 KB n=500
32 Correct 10 ms 3352 KB n=500
33 Correct 18 ms 3420 KB n=500
34 Correct 10 ms 3372 KB n=500
35 Correct 21 ms 3404 KB n=500
36 Correct 166 ms 3396 KB n=500
37 Correct 172 ms 3396 KB n=500
38 Correct 167 ms 3404 KB n=500
39 Correct 28 ms 3420 KB n=500
40 Correct 27 ms 3352 KB n=500
41 Correct 32 ms 3412 KB n=500
42 Correct 85 ms 3400 KB n=500
43 Correct 83 ms 3404 KB n=500
44 Correct 85 ms 3404 KB n=500
45 Correct 10 ms 3404 KB n=500
46 Correct 24 ms 3444 KB n=500
47 Correct 24 ms 3372 KB n=500
48 Correct 14 ms 3404 KB n=500
49 Correct 21 ms 3448 KB n=500
50 Correct 27 ms 3300 KB n=500
51 Correct 28 ms 3424 KB n=500
52 Correct 34 ms 3404 KB n=500
53 Correct 26 ms 3404 KB n=500
54 Correct 19 ms 3400 KB n=500
55 Correct 6 ms 1740 KB n=278
56 Correct 102 ms 3420 KB n=500
57 Correct 92 ms 3404 KB n=500
58 Correct 69 ms 3416 KB n=500

Subtask #3
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB n=5
2 Correct 1 ms 716 KB n=100
3 Correct 1 ms 716 KB n=100
4 Correct 1 ms 716 KB n=100
5 Correct 1 ms 716 KB n=100
6 Correct 2 ms 716 KB n=100
7 Correct 2 ms 716 KB n=100
8 Correct 1 ms 716 KB n=100
9 Correct 1 ms 716 KB n=100
10 Correct 2 ms 716 KB n=100
11 Correct 2 ms 716 KB n=100
12 Correct 1 ms 716 KB n=100
13 Correct 1 ms 716 KB n=100
14 Correct 1 ms 716 KB n=100
15 Correct 1 ms 716 KB n=100
16 Correct 1 ms 716 KB n=100
17 Correct 1 ms 716 KB n=100
18 Correct 1 ms 716 KB n=100
19 Correct 1 ms 716 KB n=100
20 Correct 1 ms 716 KB n=100
21 Correct 1 ms 716 KB n=100
22 Correct 1 ms 716 KB n=100
23 Correct 1 ms 832 KB n=100
24 Correct 1 ms 716 KB n=100
25 Correct 1 ms 716 KB n=100
26 Correct 1 ms 332 KB n=12
27 Correct 1 ms 716 KB n=100
28 Correct 10 ms 3364 KB n=500
29 Correct 23 ms 3344 KB n=500
30 Correct 19 ms 3376 KB n=500
31 Correct 21 ms 3404 KB n=500
32 Correct 10 ms 3352 KB n=500
33 Correct 18 ms 3420 KB n=500
34 Correct 10 ms 3372 KB n=500
35 Correct 21 ms 3404 KB n=500
36 Correct 166 ms 3396 KB n=500
37 Correct 172 ms 3396 KB n=500
38 Correct 167 ms 3404 KB n=500
39 Correct 28 ms 3420 KB n=500
40 Correct 27 ms 3352 KB n=500
41 Correct 32 ms 3412 KB n=500
42 Correct 85 ms 3400 KB n=500
43 Correct 83 ms 3404 KB n=500
44 Correct 85 ms 3404 KB n=500
45 Correct 10 ms 3404 KB n=500
46 Correct 24 ms 3444 KB n=500
47 Correct 24 ms 3372 KB n=500
48 Correct 14 ms 3404 KB n=500
49 Correct 21 ms 3448 KB n=500
50 Correct 27 ms 3300 KB n=500
51 Correct 28 ms 3424 KB n=500
52 Correct 34 ms 3404 KB n=500
53 Correct 26 ms 3404 KB n=500
54 Correct 19 ms 3400 KB n=500
55 Correct 6 ms 1740 KB n=278
56 Correct 102 ms 3420 KB n=500
57 Correct 92 ms 3404 KB n=500
58 Correct 69 ms 3416 KB n=500
59 Correct 158 ms 16240 KB n=2000
60 Correct 1051 ms 16404 KB n=2000
61 Correct 1004 ms 16536 KB n=2000
62 Correct 745 ms 16400 KB n=2000
63 Correct 171 ms 16340 KB n=2000
64 Correct 891 ms 16328 KB n=2000
65 Correct 144 ms 16336 KB n=2000
66 Correct 1199 ms 16512 KB n=2000
67 Correct 231 ms 16268 KB n=2000
68 Correct 919 ms 16476 KB n=2000
69 Execution timed out 4018 ms 16332 KB Time limit exceeded
70 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB n=5
2 Correct 1 ms 716 KB n=100
3 Correct 1 ms 716 KB n=100
4 Correct 1 ms 716 KB n=100
5 Correct 1 ms 716 KB n=100
6 Correct 2 ms 716 KB n=100
7 Correct 2 ms 716 KB n=100
8 Correct 1 ms 716 KB n=100
9 Correct 1 ms 716 KB n=100
10 Correct 2 ms 716 KB n=100
11 Correct 2 ms 716 KB n=100
12 Correct 1 ms 716 KB n=100
13 Correct 1 ms 716 KB n=100
14 Correct 1 ms 716 KB n=100
15 Correct 1 ms 716 KB n=100
16 Correct 1 ms 716 KB n=100
17 Correct 1 ms 716 KB n=100
18 Correct 1 ms 716 KB n=100
19 Correct 1 ms 716 KB n=100
20 Correct 1 ms 716 KB n=100
21 Correct 1 ms 716 KB n=100
22 Correct 1 ms 716 KB n=100
23 Correct 1 ms 832 KB n=100
24 Correct 1 ms 716 KB n=100
25 Correct 1 ms 716 KB n=100
26 Correct 1 ms 332 KB n=12
27 Correct 1 ms 716 KB n=100
28 Correct 10 ms 3364 KB n=500
29 Correct 23 ms 3344 KB n=500
30 Correct 19 ms 3376 KB n=500
31 Correct 21 ms 3404 KB n=500
32 Correct 10 ms 3352 KB n=500
33 Correct 18 ms 3420 KB n=500
34 Correct 10 ms 3372 KB n=500
35 Correct 21 ms 3404 KB n=500
36 Correct 166 ms 3396 KB n=500
37 Correct 172 ms 3396 KB n=500
38 Correct 167 ms 3404 KB n=500
39 Correct 28 ms 3420 KB n=500
40 Correct 27 ms 3352 KB n=500
41 Correct 32 ms 3412 KB n=500
42 Correct 85 ms 3400 KB n=500
43 Correct 83 ms 3404 KB n=500
44 Correct 85 ms 3404 KB n=500
45 Correct 10 ms 3404 KB n=500
46 Correct 24 ms 3444 KB n=500
47 Correct 24 ms 3372 KB n=500
48 Correct 14 ms 3404 KB n=500
49 Correct 21 ms 3448 KB n=500
50 Correct 27 ms 3300 KB n=500
51 Correct 28 ms 3424 KB n=500
52 Correct 34 ms 3404 KB n=500
53 Correct 26 ms 3404 KB n=500
54 Correct 19 ms 3400 KB n=500
55 Correct 6 ms 1740 KB n=278
56 Correct 102 ms 3420 KB n=500
57 Correct 92 ms 3404 KB n=500
58 Correct 69 ms 3416 KB n=500
59 Correct 158 ms 16240 KB n=2000
60 Correct 1051 ms 16404 KB n=2000
61 Correct 1004 ms 16536 KB n=2000
62 Correct 745 ms 16400 KB n=2000
63 Correct 171 ms 16340 KB n=2000
64 Correct 891 ms 16328 KB n=2000
65 Correct 144 ms 16336 KB n=2000
66 Correct 1199 ms 16512 KB n=2000
67 Correct 231 ms 16268 KB n=2000
68 Correct 919 ms 16476 KB n=2000
69 Execution timed out 4018 ms 16332 KB Time limit exceeded
70 Halted 0 ms 0 KB -