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답안 #1028552

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1028552 2024-07-20T04:18:27 Z underwaterkillerwhale Meetings 2 (JOI21_meetings2) C++17
20 / 100
 4000 ms 35452 KB 
#include <bits/stdc++.h>
#define se              second
#define fs              first
#define mp              make_pair
#define pb              push_back
#define ll              long long
#define ii              pair<ll,ll>
#define ld              long double
#define SZ(v)           (int)v.size()
#define ALL(v)          v.begin(), v.end()
#define bit(msk, i)     ((msk >> i) & 1)
#define iter(id, v)     for(auto id : v)
#define rep(i,m,n)      for(int i=(m); i<=(n); i++)
#define reb(i,m,n)      for(int i=(m); i>=(n); i--)
using namespace std;

mt19937_64 rd(chrono :: steady_clock :: now().time_since_epoch().count());
ll Rand(ll l, ll r) { return uniform_int_distribution<ll> (l, r)(rd); }

const int N = 2e5 + 7;
const int Mod = 1e9 + 7;
const int szBL = 320;
const ll INF = 2e9;
const int BASE = 1337;

int n;
vector<int> ke[N];

namespace sub5 {
    int m;

    int nChild[N], par[N], high[N], pre[N], pa[N][21];
    int a[N];
    int Ans[N];

    void pdfs (int u, int p) {
        nChild[u] = 1;
        par[u] = p;
        high[u] = high[p] + 1;
        pa[u][0] = p; rep (i, 1, 20) pa[u][i] = pa[pa[u][i - 1]][i - 1];
        iter (&v, ke[u]) {
            if (v != p) {
                pdfs (v, u);
                nChild[u] += nChild[v];
            }
        }
    }

    int LCA (int u, int v) {
        if (high[u] > high[v]) swap(u, v);
        int delta = high[v] - high[u];
        rep (i, 0, 20) if (bit(delta, i)) {
            v = pa[v][i];
        }
        if (v == u)
            return v;
        reb (i, 20, 0)
            if (pa[v][i] != pa[u][i]) {
                v = pa[v][i];
                u = pa[u][i];
            }
        return pa[u][0];
    }
    int Dist (int u, int v) {
        return high[u] + high[v] - 2 * high[LCA(u, v)];
    }

    inline void maximize (int &a, int b) { if (a < b) a = b; }

    set<pair<int,int>> vec;
    void dfs (int u, int p) {
        iter (&id, vec) {
            maximize(Ans[min(nChild[u], id.fs)], Dist(u, id.se) + 1);
//            cout << u <<" "<<id.se <<"\n";
        }
        iter (&v, ke[u]) {
            if (v != p) {
                pre[u] = pre[p] + nChild[u] - nChild[v];
                vec.insert(mp(pre[u], u));
                dfs (v, u);
                vec.erase(vec.find(mp(pre[u], u)));
            }
        }
        vec.insert(mp(nChild[u], u));
    }

    void solution() {
        pdfs (1, 0);
        rep (i, 1, n + 1) Ans[i] = 1;
        dfs (1, 0);
        reb (i, n, 1) {
            maximize(Ans[i], Ans[i + 1]);
        }
        rep (i, 1, n) {
            if (i & 1) {
                cout << 1 <<"\n";
            }
            else {
                cout << Ans[i / 2] <<"\n";
            }
        }
    }
}
namespace sub1 {
    const ll N1 = 20;
    int Dist[N1][N1];
    void dfs (int root, int u, int p, int Dst = 0) {
        Dist[root][u] = Dst;
        iter (&v, ke[u]) {
            if (v != p) {
                dfs (root, v, u, Dst + 1);
            }
        }
    }
    void solution () {
        rep (i, 1, n) dfs (i, i, 0);
        rep (k, 1, n) {
            int res = 0;
            rep (msk, 1, (1 << n) - 1) {
                if (__builtin_popcount(msk) != k) continue;
                vector<int> vec;
                rep (i, 1, n) if (bit(msk, i - 1)) vec.push_back(i);
                int mnvl = INF, de = 0;
                rep (i, 1, n) {
                    int cur = 0;
                    iter (&id, vec) cur += Dist[id][i];
                    if (cur < mnvl) {
                        de = 1;
                        mnvl = cur;
                    }
                    else if (cur == mnvl) ++de;
                }
                res = max(res, de);
            }
            cout << res<<"\n";
        }
    }
}

void solution () {
    cin >> n;
    rep (i, 1, n - 1) {
        int u, v;
        cin >> u >> v;
        ke[u].push_back(v);
        ke[v].push_back(u);
    }
//    pdfs(1, 0);
//    if (n <= 16) sub1 :: solution();
//    else
        sub5 :: solution();
//    rep (i, 1, n) {
//        if (i & 1) cout << 1 <<"\n";
//        else {
//            cout << Diameter <<"\n";
//            Diameter -= 2;
//        }
//    }

}
#define file(name) freopen(name".inp", "r", stdin); \
freopen(name".out", "w", stdout);

int main () {
//    file("c");
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    ll num_Test = 1;
//    cin >> num_Test;
    while(num_Test--)
        solution();
}
/*
nếu mình nghĩ sẽ thay đổi định nghĩa, kiểu dữ liệu của hàm hay mảng j thì mình phải nghĩ xem nó sẽ ảnh hưởng đến các phần nào
5 10
798981764 -961045489
-762214604 -6816243
549909709 362471127
504233152 -881315415
503023672 -79630788
*/

Compilation message

meetings2.cpp: In function 'void sub1::solution()':
meetings2.cpp:122:46: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
  122 |                 rep (i, 1, n) if (bit(msk, i - 1)) vec.push_back(i);
      |                                            ~~^~~
meetings2.cpp:11:34: note: in definition of macro 'bit'
   11 | #define bit(msk, i)     ((msk >> i) & 1)
      |                                  ^

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 2 ms 9564 KB Output is correct
6 Correct 1 ms 9564 KB Output is correct
7 Correct 1 ms 9564 KB Output is correct
8 Correct 2 ms 9564 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9704 KB Output is correct
11 Correct 1 ms 9564 KB Output is correct
12 Correct 2 ms 9560 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct
14 Correct 2 ms 9820 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 1 ms 9564 KB Output is correct
17 Correct 1 ms 9564 KB Output is correct
18 Correct 2 ms 9720 KB Output is correct
19 Correct 2 ms 9820 KB Output is correct
20 Correct 2 ms 9564 KB Output is correct
21 Correct 2 ms 9564 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 2 ms 9564 KB Output is correct
6 Correct 1 ms 9564 KB Output is correct
7 Correct 1 ms 9564 KB Output is correct
8 Correct 2 ms 9564 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9704 KB Output is correct
11 Correct 1 ms 9564 KB Output is correct
12 Correct 2 ms 9560 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct
14 Correct 2 ms 9820 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 1 ms 9564 KB Output is correct
17 Correct 1 ms 9564 KB Output is correct
18 Correct 2 ms 9720 KB Output is correct
19 Correct 2 ms 9820 KB Output is correct
20 Correct 2 ms 9564 KB Output is correct
21 Correct 2 ms 9564 KB Output is correct
22 Correct 582 ms 10028 KB Output is correct
23 Correct 563 ms 9948 KB Output is correct
24 Correct 577 ms 9936 KB Output is correct
25 Correct 553 ms 10068 KB Output is correct
26 Correct 565 ms 9928 KB Output is correct
27 Correct 573 ms 10064 KB Output is correct
28 Correct 624 ms 10304 KB Output is correct
29 Correct 602 ms 10068 KB Output is correct
30 Correct 603 ms 10268 KB Output is correct
31 Correct 556 ms 10072 KB Output is correct
32 Correct 753 ms 10324 KB Output is correct
33 Correct 646 ms 10184 KB Output is correct
34 Correct 499 ms 10068 KB Output is correct
35 Correct 435 ms 10064 KB Output is correct
36 Correct 651 ms 10064 KB Output is correct
37 Correct 498 ms 10048 KB Output is correct
38 Correct 506 ms 10064 KB Output is correct

Subtask #3
0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 2 ms 9564 KB Output is correct
6 Correct 1 ms 9564 KB Output is correct
7 Correct 1 ms 9564 KB Output is correct
8 Correct 2 ms 9564 KB Output is correct
9 Correct 2 ms 9564 KB Output is correct
10 Correct 2 ms 9704 KB Output is correct
11 Correct 1 ms 9564 KB Output is correct
12 Correct 2 ms 9560 KB Output is correct
13 Correct 2 ms 9564 KB Output is correct
14 Correct 2 ms 9820 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 1 ms 9564 KB Output is correct
17 Correct 1 ms 9564 KB Output is correct
18 Correct 2 ms 9720 KB Output is correct
19 Correct 2 ms 9820 KB Output is correct
20 Correct 2 ms 9564 KB Output is correct
21 Correct 2 ms 9564 KB Output is correct
22 Correct 582 ms 10028 KB Output is correct
23 Correct 563 ms 9948 KB Output is correct
24 Correct 577 ms 9936 KB Output is correct
25 Correct 553 ms 10068 KB Output is correct
26 Correct 565 ms 9928 KB Output is correct
27 Correct 573 ms 10064 KB Output is correct
28 Correct 624 ms 10304 KB Output is correct
29 Correct 602 ms 10068 KB Output is correct
30 Correct 603 ms 10268 KB Output is correct
31 Correct 556 ms 10072 KB Output is correct
32 Correct 753 ms 10324 KB Output is correct
33 Correct 646 ms 10184 KB Output is correct
34 Correct 499 ms 10068 KB Output is correct
35 Correct 435 ms 10064 KB Output is correct
36 Correct 651 ms 10064 KB Output is correct
37 Correct 498 ms 10048 KB Output is correct
38 Correct 506 ms 10064 KB Output is correct
39 Execution timed out 4050 ms 35452 KB Time limit exceeded
40 Halted 0 ms 0 KB -