oj.uz

답안 #971434

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
971434 2024-04-28T13:45:46 Z binminh01 Meetings 2 (JOI21_meetings2) C++17
20 / 100
 109 ms 42168 KB 
#pragma GCC optimize("Ofast,unroll-loops")
 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned long long
#define int128 __int128_t
#define double long double
#define gcd __gcd
#define lcm(a, b) ((a)/gcd(a, b)*(b))
#define sqrt sqrtl
#define log2 log2l
#define log10 log10l
#define floor floorl
#define to_string str
#define yes cout << "YES"
#define no cout << "NO"
#define trav(i, a) for (auto &i: (a))
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define sz(a) (int)a.size()
#define Max(a) *max_element(all(a))
#define Min(a) *min_element(all(a))
#define Find(a, n) (find(all(a), n) - a.begin())
#define Count(a, n) count(all(a), n)
#define Upper(a, n) (upper_bound(all(a), n) - a.begin())
#define Lower(a, n) (lower_bound(all(a), n) - a.begin())
#define next_perm(a) next_permutation(all(a))
#define prev_perm(a) prev_permutation(all(a))
#define sorted(a) is_sorted(all(a))
#define sum(a) accumulate(all(a), 0)
#define sumll(a) accumulate(all(a), 0ll)
#define Sort(a) sort(all(a))
#define Reverse(a) reverse(all(a))
#define Unique(a) Sort(a), (a).resize(unique(all(a)) - a.begin())
#define pb push_back
#define eb emplace_back
#define open(s) freopen(s, "r", stdin)
#define write(s) freopen(s, "w", stdout)
#define fileopen(s) open((string(s) + ".inp").c_str()), write((string(s) + ".out").c_str());
#define For(i, a, b) for (auto i = (a); i < (b); i++)
#define Fore(i, a, b) for (auto i = (a); i >= (b); i--)
#define FOR(i, a, b) for (auto i = (a); i <= (b); i++)
#define ret(s) return void(cout << s);
 
const int mod = 1e9 + 7, mod2 = 998244353;
const double PI = acos(-1), eps = 1e-9;
const ull npos = string::npos;
const int dx[] = {0, 0, -1, 1}, dy[] = {-1, 1, 0, 0};
using pii = pair<int, int>;
using pll = pair<ll, ll>;
mt19937 mt(chrono::system_clock::now().time_since_epoch().count());
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ll> vll;
typedef vector<vll> vvll;
typedef vector<double> vdo;
typedef vector<vdo> vvdo;
typedef vector<string> vs;
typedef vector<pii> vpair;
typedef vector<vpair> vvpair;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef vector<char> vc;
typedef vector<vc> vvc;
typedef priority_queue<int> pq;
typedef priority_queue<int, vi, greater<int>> pqg;
typedef priority_queue<ll> pqll;
typedef priority_queue<ll, vll, greater<ll>> pqgll;
 
ll power(ll a, ll b, int m){ll x = 1;a%=m;while (b) {if (b & 1) x = x*a % m;a = a*a % m;b>>=1;}return x;}
ll power(ll a, ll b){ll x = 1;while (b) {if (b & 1) x = x*a;a = a*a;b>>=1;}return x;}
ll ceil(ll a, ll b){return (a + b - 1)/b;}
ll to_int(const string &s){ll x = 0; for (int i = (s[0] == '-'); i < sz(s); i++) x = x*10 + s[i] - '0';return x*(s[0] == '-' ? -1: 1);}
bool is_prime(ll n) {if (n < 2) return 0;if (n < 4) return 1;if (n % 2 == 0 || n % 3 == 0) return 0;for (ll i = 5; i*i <= n; i+=6) {if(n % i == 0 || n % (i + 2) == 0) return 0;}return 1;}
bool is_square(ll n) {ll k = sqrt(n); return k*k == n;}
ll factorial(int n) {ll x = 1;for (int i = 2; i <= n; i++) x*=i;return x;}
ll factorial(int n, int m) {ll x = 1;for (ll i = 2; i <= n; i++) x = x*i % m;return x;}
bool is_power(ll n, ll k) {while (n % k == 0) n/=k;return n == 1ll;}
string str(ll n) {if (n == 0) return "0"; string s = ""; bool c = 0; if (n < 0) c = 1, n = -n; while (n) {s+=n % 10 + '0'; n/=10;} if (c) s+='-'; Reverse(s); return s;}
string repeat(const string &s, int n) {if (n < 0) return ""; string x = ""; while (n--) x+=s; return x;}
string bin(ll n) {string s = ""; while (n) {s+=(n & 1) + '0'; n>>=1;} Reverse(s); return s;}
void sieve(vector<bool> &a) {int n = a.size(); a[0] = a[1] = 0; for (int i = 4; i < n; i+=2) a[i] = 0; for (int i = 3; i*i < n; i+=2) {if (a[i]) {for (int j = i*i; j < n; j+=(i << 1)) a[j] = 0;}}}
void sieve(vector<int> &a) {int n = a.size(); for (int i = 2; i < n; i+=2) a[i] = 2; for (int i = 3; i*i < n; i+=2) {if (!a[i]) {for (int j = i; j < n; j+=(i << 1)) a[j] = i;}} for (int i = 3; i < n; i+=2) {if (!a[i]) a[i] = i;}}
void sieve(int a[], int n) {for (int i = 2; i < n; i+=2) a[i] = 2; for (int i = 3; i*i < n; i+=2) {if (!a[i]) {for (int j = i; j < n; j+=(i << 1)) a[j] = i;}} for (int i = 3; i < n; i+=2) {if (!a[i]) a[i] = i;}}
vector<pii> factorize(int n) {vector<pii> a; for (int i = 2; i*i <= n; i++) {if (n % i == 0) {int k = 0; while (n % i == 0) k++, n/=i; a.emplace_back(i, k);}} if (n > 1) a.emplace_back(n, 1); return a;}
int rand(int l, int r) {return uniform_int_distribution<int>(l, r)(mt);}
int Log2(int n) {return 31 - __builtin_clz(n);}
template<class T> void compress(vector<T> &a) {vector<T> b; for (T &i: a) b.push_back(i); sort(all(b)); b.resize(unique(all(b)) - b.begin()); for (T &i: a) i = lower_bound(all(b), i) - b.begin() + 1;}
 
template<class A, class B> istream& operator>>(istream& in, pair<A, B> &p) {in >> p.first >> p.second; return in;}
template<class A, class B> ostream& operator<<(ostream& out, const pair<A, B> &p) {out << p.first << ' ' << p.second; return out;}
template<class T> istream& operator>>(istream& in, vector<T> &a) {for (auto &i: a) in >> i; return in;}
template<class T> ostream& operator<<(ostream& out, const vector<T> &a) {for (auto &i: a) out << i << ' '; return out;}
template<class T> istream& operator>>(istream& in, vector<vector<T>> &a) {for (auto &i: a) in >> i; return in;}
template<class T> ostream& operator<<(ostream& out, const vector<vector<T>> &a) {for (auto &i: a) out << i << '\n'; return out;}
template<class T> istream& operator>>(istream& in, deque<T> &a) {for (auto &i: a) in >> i; return in;}
template<class T> ostream& operator<<(ostream& out, const deque<T> &a) {for (auto &i: a) out << i << ' '; return out;}
// istream& operator>>(istream& in, __int128_t &a) {string s; in >> s; a = 0; for (auto &i: s) a = a*10 + (i - '0'); return in;}
// ostream& operator<<(ostream& out, __int128_t a) {string s = ""; while (a > 0) {s+=(int)a % 10 + '0'; a/=10;} Reverse(s); out << s; return out;}
 
const int N = 2e5 + 3;
int n, in[N], h[N], f[N], s[20][N], sz[N], q[N], ti = 0;
vi g[N], e{0}, t{0}, w[N];
void dfs(int u, int p) {
    in[u] = ++ti;
    t.pb(u);
    f[u] = sz(e);
    e.pb(in[u]);
    sz[u] = 1;
    trav(v,g[u]){
        if (v != p) {
            h[v] = h[u] + 1;
            dfs(v, u);
            sz[u]+=sz[v];
            e.pb(in[u]);
        }
    }
}
void Dfs(int u, int p) {
    sz[u] = 1;
    trav(v,g[u]){
        if (v != p) {
            Dfs(v, u);
            sz[u]+=sz[v];
        }
    }
}
void sparse() {
    int n = sz(e) - 1;
    FOR(i,1,n) s[0][i] = e[i];
    FOR(i,1,19){
        FOR(j,1,n-(1<<i)+1) s[i][j] = min(s[i - 1][j], s[i - 1][j + (1 << (i - 1))]);
    }
}
int query(int l, int r) {
    int k = Log2(r - l + 1);
    return min(s[k][l], s[k][r - (1 << k) + 1]);
}
int lca(int u, int v) {
    u = f[u]; v = f[v];
    if (u > v) swap(u, v);
    return t[query(u, v)];
}
int dis(int u, int v) {
    int l = lca(u, v);
    return h[u] + h[v] - 2*h[l];
}
int centroid(int u, int p) {
    trav(v,g[u]){
        if (v != p && sz[v]*2 > n) return centroid(v, u);
    }
    return u;
}
int main() {
    ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL);
    cout << fixed << setprecision(10);
    cin >> n;
    For(i,1,n){
        int u, v; cin >> u >> v;
        g[u].pb(v); g[v].pb(u);
    }
    Dfs(1, 0);
    int r = centroid(1, 0);
    dfs(r, 0); sparse();
    FOR(i,1,n) w[sz[i]].pb(i);
    int x = r, y = r, d = 0;
    Fore(i,n>>1,1){
        trav(v,w[i]){
            int a = dis(x, v), b = dis(y, v);
            if (d < a) y = v, d = a;
            else if (d < b) x = v, d = b;
        }
        q[i] = d + 1;
    }
    FOR(i,1,n) cout << (i & 1 ? 1: q[i >> 1]) << '\n';
    cerr << "\nProcess returned 0 (0x0)   execution time :  " << 0.001*clock() << " s";
    return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 16988 KB Output is correct
2 Correct 5 ms 16988 KB Output is correct
3 Correct 5 ms 19044 KB Output is correct
4 Correct 4 ms 19088 KB Output is correct
5 Correct 4 ms 19036 KB Output is correct
6 Correct 4 ms 19036 KB Output is correct
7 Correct 5 ms 19036 KB Output is correct
8 Correct 4 ms 19036 KB Output is correct
9 Correct 4 ms 19036 KB Output is correct
10 Correct 5 ms 19036 KB Output is correct
11 Correct 5 ms 19036 KB Output is correct
12 Correct 4 ms 19092 KB Output is correct
13 Correct 4 ms 19032 KB Output is correct
14 Correct 4 ms 19036 KB Output is correct
15 Correct 4 ms 19036 KB Output is correct
16 Correct 5 ms 19036 KB Output is correct
17 Correct 5 ms 19036 KB Output is correct
18 Correct 4 ms 19036 KB Output is correct
19 Correct 4 ms 19076 KB Output is correct
20 Correct 5 ms 19036 KB Output is correct
21 Correct 4 ms 19032 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 16988 KB Output is correct
2 Correct 5 ms 16988 KB Output is correct
3 Correct 5 ms 19044 KB Output is correct
4 Correct 4 ms 19088 KB Output is correct
5 Correct 4 ms 19036 KB Output is correct
6 Correct 4 ms 19036 KB Output is correct
7 Correct 5 ms 19036 KB Output is correct
8 Correct 4 ms 19036 KB Output is correct
9 Correct 4 ms 19036 KB Output is correct
10 Correct 5 ms 19036 KB Output is correct
11 Correct 5 ms 19036 KB Output is correct
12 Correct 4 ms 19092 KB Output is correct
13 Correct 4 ms 19032 KB Output is correct
14 Correct 4 ms 19036 KB Output is correct
15 Correct 4 ms 19036 KB Output is correct
16 Correct 5 ms 19036 KB Output is correct
17 Correct 5 ms 19036 KB Output is correct
18 Correct 4 ms 19036 KB Output is correct
19 Correct 4 ms 19076 KB Output is correct
20 Correct 5 ms 19036 KB Output is correct
21 Correct 4 ms 19032 KB Output is correct
22 Correct 6 ms 25436 KB Output is correct
23 Correct 7 ms 25436 KB Output is correct
24 Correct 7 ms 25488 KB Output is correct
25 Correct 6 ms 25436 KB Output is correct
26 Correct 6 ms 25436 KB Output is correct
27 Correct 6 ms 25436 KB Output is correct
28 Correct 6 ms 25504 KB Output is correct
29 Correct 6 ms 25436 KB Output is correct
30 Correct 6 ms 25432 KB Output is correct
31 Correct 6 ms 25436 KB Output is correct
32 Correct 6 ms 25436 KB Output is correct
33 Correct 7 ms 25692 KB Output is correct
34 Correct 7 ms 25648 KB Output is correct
35 Correct 6 ms 25436 KB Output is correct
36 Correct 6 ms 25592 KB Output is correct
37 Correct 6 ms 25432 KB Output is correct
38 Correct 6 ms 25436 KB Output is correct

Subtask #3
0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 16988 KB Output is correct
2 Correct 5 ms 16988 KB Output is correct
3 Correct 5 ms 19044 KB Output is correct
4 Correct 4 ms 19088 KB Output is correct
5 Correct 4 ms 19036 KB Output is correct
6 Correct 4 ms 19036 KB Output is correct
7 Correct 5 ms 19036 KB Output is correct
8 Correct 4 ms 19036 KB Output is correct
9 Correct 4 ms 19036 KB Output is correct
10 Correct 5 ms 19036 KB Output is correct
11 Correct 5 ms 19036 KB Output is correct
12 Correct 4 ms 19092 KB Output is correct
13 Correct 4 ms 19032 KB Output is correct
14 Correct 4 ms 19036 KB Output is correct
15 Correct 4 ms 19036 KB Output is correct
16 Correct 5 ms 19036 KB Output is correct
17 Correct 5 ms 19036 KB Output is correct
18 Correct 4 ms 19036 KB Output is correct
19 Correct 4 ms 19076 KB Output is correct
20 Correct 5 ms 19036 KB Output is correct
21 Correct 4 ms 19032 KB Output is correct
22 Correct 6 ms 25436 KB Output is correct
23 Correct 7 ms 25436 KB Output is correct
24 Correct 7 ms 25488 KB Output is correct
25 Correct 6 ms 25436 KB Output is correct
26 Correct 6 ms 25436 KB Output is correct
27 Correct 6 ms 25436 KB Output is correct
28 Correct 6 ms 25504 KB Output is correct
29 Correct 6 ms 25436 KB Output is correct
30 Correct 6 ms 25432 KB Output is correct
31 Correct 6 ms 25436 KB Output is correct
32 Correct 6 ms 25436 KB Output is correct
33 Correct 7 ms 25692 KB Output is correct
34 Correct 7 ms 25648 KB Output is correct
35 Correct 6 ms 25436 KB Output is correct
36 Correct 6 ms 25592 KB Output is correct
37 Correct 6 ms 25432 KB Output is correct
38 Correct 6 ms 25436 KB Output is correct
39 Correct 109 ms 42168 KB Output is correct
40 Correct 96 ms 41624 KB Output is correct
41 Incorrect 99 ms 42040 KB Output isn't correct
42 Halted 0 ms 0 KB -