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답안 #713695

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
713695 2023-03-22T20:21:40 Z tamyte Tax Evasion (LMIO19_mokesciai) C++14
100 / 100
 437 ms 55668 KB 
#include <bits/stdc++.h>


using namespace std;
#define sz(x) (int)(x).size()
void setIO(string name = "")
{
    cin.tie(0)->sync_with_stdio(0); // see /general/fast-io
    if (sz(name))
    {
        freopen((name + ".in").c_str(), "r", stdin); // see /general/input-output
        freopen((name + ".out").c_str(), "w", stdout);
    }
}

/*----------------------------------*/
const int MAXN = 2e5 + 10, maxLog = 32;

int n, m, dep[MAXN] {0}, par[MAXN][maxLog] = {0}, best[MAXN];

vector<int> adj[MAXN];



void dfs(int v, int u) {
    dep[v] = dep[u] + 1;
    par[v][0] = u;
    for (auto i : adj[v]) {
        if (i == u) continue;
        dfs(i, v);
    }
}

int lift(int p, int x) {
    for (int i = 0; i < maxLog; ++i) {
        if (x & (1 << i)) {
            p = par[p][i];
        }
    }
    return p;
}
bool pos = true;

int possible(int v, int u, int val) {
    int cnt = 0;
    for (auto i : adj[v]) {
        if (i == u) continue;
        cnt += possible(i, v, val);
    }
    if (dep[v] >= val - 1) cnt++;
    if (cnt < best[v]) pos = false;
    cnt -= best[v];
    return cnt;
}

int solve() {
    int l = 0, r = n;
    while (l < r - 1) {
        int m = l + (r - l) / 2;
        pos = true;
        possible(1, 0, m);
        if (pos) l = m;
        else r = m - 1;
    }
    pos = true;
    possible(1, 0, r + 1);
    if (pos) return r + 1;
    pos = true;
    possible(1, 0, r);
    if (pos) return r;
    return r - 1;
}



int main()
{
    setIO("");
    cin >> n >> m;
    for (int i = 2; i <= n; ++i) {
        int a;
        cin >> a;
        adj[a].push_back(i);
        adj[i].push_back(a);
    }
    dep[0] = -1;
    par[0][0] = 0;
    dfs(1, 0);
    // cerr << "a\n";
    for (int i = 1; i < maxLog; ++i) {
        for (int x = 1; x <= n; ++x) {
            par[x][i] = par[par[x][i - 1]][i - 1];
        }
    }
    // cerr << "a\n";
    for (int i = 0; i < m; ++i) {
        int a;
        cin >> a;
        best[lift(a, (dep[a] - 1) / 2)]++;
    }
    cout << solve();
}

Compilation message

mokesciai.cpp: In function 'void setIO(std::string)':
mokesciai.cpp:11:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |         freopen((name + ".in").c_str(), "r", stdin); // see /general/input-output
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mokesciai.cpp:12:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 5 ms 6148 KB Output is correct
4 Correct 6 ms 6196 KB Output is correct
5 Correct 7 ms 6264 KB Output is correct
6 Correct 202 ms 54092 KB Output is correct
7 Correct 181 ms 53904 KB Output is correct
8 Correct 5 ms 6188 KB Output is correct
9 Correct 323 ms 55388 KB Output is correct
10 Correct 365 ms 55668 KB Output is correct
11 Correct 243 ms 54712 KB Output is correct

Subtask #2
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 202 ms 54092 KB Output is correct
2 Correct 181 ms 53904 KB Output is correct
3 Correct 5 ms 6188 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 4 ms 6008 KB Output is correct
6 Correct 4 ms 5972 KB Output is correct
7 Correct 4 ms 5844 KB Output is correct
8 Correct 5 ms 5928 KB Output is correct
9 Correct 4 ms 5804 KB Output is correct
10 Correct 158 ms 44976 KB Output is correct
11 Correct 149 ms 44868 KB Output is correct
12 Correct 325 ms 38424 KB Output is correct
13 Correct 199 ms 46156 KB Output is correct
14 Correct 147 ms 38140 KB Output is correct
15 Correct 340 ms 38604 KB Output is correct
16 Correct 191 ms 46292 KB Output is correct
17 Correct 429 ms 38496 KB Output is correct
18 Correct 187 ms 47820 KB Output is correct
19 Correct 177 ms 39360 KB Output is correct
20 Correct 211 ms 38708 KB Output is correct
21 Correct 196 ms 38592 KB Output is correct
22 Correct 201 ms 38572 KB Output is correct
23 Correct 245 ms 38464 KB Output is correct
24 Correct 188 ms 38344 KB Output is correct

Subtask #3
39.0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 5 ms 6148 KB Output is correct
4 Correct 6 ms 6196 KB Output is correct
5 Correct 7 ms 6264 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 4 ms 6008 KB Output is correct
8 Correct 4 ms 5972 KB Output is correct
9 Correct 4 ms 5844 KB Output is correct
10 Correct 5 ms 5928 KB Output is correct
11 Correct 4 ms 5804 KB Output is correct
12 Correct 5 ms 6188 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5028 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 4 ms 5972 KB Output is correct
19 Correct 4 ms 5972 KB Output is correct
20 Correct 5 ms 5972 KB Output is correct
21 Correct 5 ms 5844 KB Output is correct
22 Correct 6 ms 5844 KB Output is correct
23 Correct 5 ms 5972 KB Output is correct
24 Correct 6 ms 5844 KB Output is correct
25 Correct 5 ms 5972 KB Output is correct
26 Correct 5 ms 5816 KB Output is correct
27 Correct 5 ms 6100 KB Output is correct
28 Correct 5 ms 6148 KB Output is correct
29 Correct 5 ms 5848 KB Output is correct
30 Correct 6 ms 5972 KB Output is correct
31 Correct 5 ms 5844 KB Output is correct
32 Correct 5 ms 5676 KB Output is correct
33 Correct 4 ms 5676 KB Output is correct

Subtask #4
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 5028 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 4 ms 5972 KB Output is correct
7 Correct 4 ms 5972 KB Output is correct
8 Correct 5 ms 5972 KB Output is correct
9 Correct 5 ms 5844 KB Output is correct
10 Correct 6 ms 5844 KB Output is correct
11 Correct 5 ms 5972 KB Output is correct
12 Correct 6 ms 5844 KB Output is correct
13 Correct 5 ms 5972 KB Output is correct
14 Correct 5 ms 5816 KB Output is correct
15 Correct 5 ms 6100 KB Output is correct
16 Correct 5 ms 6148 KB Output is correct
17 Correct 5 ms 5848 KB Output is correct
18 Correct 6 ms 5972 KB Output is correct
19 Correct 5 ms 5844 KB Output is correct
20 Correct 5 ms 5676 KB Output is correct
21 Correct 4 ms 5676 KB Output is correct
22 Correct 2 ms 4948 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 5 ms 6148 KB Output is correct
25 Correct 6 ms 6196 KB Output is correct
26 Correct 7 ms 6264 KB Output is correct
27 Correct 2 ms 4948 KB Output is correct
28 Correct 4 ms 6008 KB Output is correct
29 Correct 4 ms 5972 KB Output is correct
30 Correct 4 ms 5844 KB Output is correct
31 Correct 5 ms 5928 KB Output is correct
32 Correct 4 ms 5804 KB Output is correct
33 Correct 202 ms 54092 KB Output is correct
34 Correct 181 ms 53904 KB Output is correct
35 Correct 5 ms 6188 KB Output is correct
36 Correct 158 ms 44976 KB Output is correct
37 Correct 149 ms 44868 KB Output is correct
38 Correct 325 ms 38424 KB Output is correct
39 Correct 199 ms 46156 KB Output is correct
40 Correct 147 ms 38140 KB Output is correct
41 Correct 340 ms 38604 KB Output is correct
42 Correct 191 ms 46292 KB Output is correct
43 Correct 429 ms 38496 KB Output is correct
44 Correct 187 ms 47820 KB Output is correct
45 Correct 177 ms 39360 KB Output is correct
46 Correct 211 ms 38708 KB Output is correct
47 Correct 196 ms 38592 KB Output is correct
48 Correct 201 ms 38572 KB Output is correct
49 Correct 245 ms 38464 KB Output is correct
50 Correct 188 ms 38344 KB Output is correct
51 Correct 323 ms 55388 KB Output is correct
52 Correct 365 ms 55668 KB Output is correct
53 Correct 243 ms 54712 KB Output is correct
54 Correct 152 ms 45152 KB Output is correct
55 Correct 149 ms 45188 KB Output is correct
56 Correct 215 ms 47168 KB Output is correct
57 Correct 150 ms 38724 KB Output is correct
58 Correct 269 ms 38348 KB Output is correct
59 Correct 220 ms 42576 KB Output is correct
60 Correct 332 ms 39584 KB Output is correct
61 Correct 285 ms 47720 KB Output is correct
62 Correct 437 ms 39476 KB Output is correct
63 Correct 236 ms 48460 KB Output is correct
64 Correct 216 ms 39964 KB Output is correct
65 Correct 227 ms 39056 KB Output is correct
66 Correct 233 ms 39408 KB Output is correct
67 Correct 241 ms 39348 KB Output is correct
68 Correct 289 ms 38976 KB Output is correct
69 Correct 263 ms 39520 KB Output is correct
70 Correct 91 ms 22792 KB Output is correct
71 Correct 172 ms 42316 KB Output is correct