oj.uz

Submission #971304

# Submission time Handle Problem Language Result Execution time Memory
971304 2024-04-28T11:05:49 Z binminh01 Meetings 2 (JOI21_meetings2) C++17
20 / 100
 129 ms 43784 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], out[N], h[N], d[N], f[N], s[20][N], par[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;
    f[u] = sz(e);
    t.pb(u); e.pb(in[u]);
    sz[u] = 1;
    trav(v,g[u]){
        if (v != p) {
            h[v] = h[u] + 1;
            par[v] = u;
            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 k = sz(e);
    For(i,0,k) s[0][i] = e[i];
    For(j,1,20){
        FOR(i,0,k-(1<<j)) s[j][i] = min(s[j - 1][i], s[j - 1][i + (1 << (j - 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) {
    if (u == -1 || v == -1) return 0;
    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 x = -1, y = -1;
void add(int u) {
    if (x == -1) {x = u; return;}
    if (y == -1) {y = u; return;}
    if (dis(x, u) > dis(x, y)) y = u;
    else if (dis(y, u) > dis(x, y)) x = 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);
    fill(q + 1, q + n + 1, 1);
    FOR(i,1,n) {
        if (i != r) d[sz[i]] = max(d[sz[i]], h[i]);
    }
    Fore(i,n-1,1) d[i] = max(d[i], d[i + 1]);
    add(r);
    for (int i = n - (n & 1); i > 0; i-=2) {
        trav(j,w[i>>1]) add(j);
        q[i] = max(d[i >> 1], dis(x, y) + 1);
    }
    FOR(i,1,n) cout << q[i] << '\n';
    cerr << "\nProcess returned 0 (0x0)   execution time :  " << 0.001*clock() << " s";
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 19036 KB Output is correct
2 Correct 4 ms 19036 KB Output is correct
3 Correct 4 ms 19036 KB Output is correct
4 Correct 4 ms 21132 KB Output is correct
5 Correct 4 ms 21136 KB Output is correct
6 Correct 4 ms 21148 KB Output is correct
7 Correct 4 ms 21084 KB Output is correct
8 Correct 4 ms 21080 KB Output is correct
9 Correct 5 ms 21084 KB Output is correct
10 Correct 5 ms 21084 KB Output is correct
11 Correct 4 ms 21084 KB Output is correct
12 Correct 4 ms 21136 KB Output is correct
13 Correct 4 ms 21088 KB Output is correct
14 Correct 4 ms 21084 KB Output is correct
15 Correct 4 ms 21084 KB Output is correct
16 Correct 5 ms 21084 KB Output is correct
17 Correct 7 ms 21080 KB Output is correct
18 Correct 5 ms 21084 KB Output is correct
19 Correct 5 ms 21084 KB Output is correct
20 Correct 5 ms 21084 KB Output is correct
21 Correct 13 ms 21084 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 19036 KB Output is correct
2 Correct 4 ms 19036 KB Output is correct
3 Correct 4 ms 19036 KB Output is correct
4 Correct 4 ms 21132 KB Output is correct
5 Correct 4 ms 21136 KB Output is correct
6 Correct 4 ms 21148 KB Output is correct
7 Correct 4 ms 21084 KB Output is correct
8 Correct 4 ms 21080 KB Output is correct
9 Correct 5 ms 21084 KB Output is correct
10 Correct 5 ms 21084 KB Output is correct
11 Correct 4 ms 21084 KB Output is correct
12 Correct 4 ms 21136 KB Output is correct
13 Correct 4 ms 21088 KB Output is correct
14 Correct 4 ms 21084 KB Output is correct
15 Correct 4 ms 21084 KB Output is correct
16 Correct 5 ms 21084 KB Output is correct
17 Correct 7 ms 21080 KB Output is correct
18 Correct 5 ms 21084 KB Output is correct
19 Correct 5 ms 21084 KB Output is correct
20 Correct 5 ms 21084 KB Output is correct
21 Correct 13 ms 21084 KB Output is correct
22 Correct 20 ms 27484 KB Output is correct
23 Correct 18 ms 27480 KB Output is correct
24 Correct 14 ms 23388 KB Output is correct
25 Correct 9 ms 10652 KB Output is correct
26 Correct 13 ms 19548 KB Output is correct
27 Correct 7 ms 27560 KB Output is correct
28 Correct 6 ms 27484 KB Output is correct
29 Correct 8 ms 27484 KB Output is correct
30 Correct 9 ms 27484 KB Output is correct
31 Correct 7 ms 27488 KB Output is correct
32 Correct 8 ms 27672 KB Output is correct
33 Correct 7 ms 27740 KB Output is correct
34 Correct 7 ms 27484 KB Output is correct
35 Correct 7 ms 27484 KB Output is correct
36 Correct 7 ms 27480 KB Output is correct
37 Correct 6 ms 27480 KB Output is correct
38 Correct 6 ms 27540 KB Output is correct

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 19036 KB Output is correct
2 Correct 4 ms 19036 KB Output is correct
3 Correct 4 ms 19036 KB Output is correct
4 Correct 4 ms 21132 KB Output is correct
5 Correct 4 ms 21136 KB Output is correct
6 Correct 4 ms 21148 KB Output is correct
7 Correct 4 ms 21084 KB Output is correct
8 Correct 4 ms 21080 KB Output is correct
9 Correct 5 ms 21084 KB Output is correct
10 Correct 5 ms 21084 KB Output is correct
11 Correct 4 ms 21084 KB Output is correct
12 Correct 4 ms 21136 KB Output is correct
13 Correct 4 ms 21088 KB Output is correct
14 Correct 4 ms 21084 KB Output is correct
15 Correct 4 ms 21084 KB Output is correct
16 Correct 5 ms 21084 KB Output is correct
17 Correct 7 ms 21080 KB Output is correct
18 Correct 5 ms 21084 KB Output is correct
19 Correct 5 ms 21084 KB Output is correct
20 Correct 5 ms 21084 KB Output is correct
21 Correct 13 ms 21084 KB Output is correct
22 Correct 20 ms 27484 KB Output is correct
23 Correct 18 ms 27480 KB Output is correct
24 Correct 14 ms 23388 KB Output is correct
25 Correct 9 ms 10652 KB Output is correct
26 Correct 13 ms 19548 KB Output is correct
27 Correct 7 ms 27560 KB Output is correct
28 Correct 6 ms 27484 KB Output is correct
29 Correct 8 ms 27484 KB Output is correct
30 Correct 9 ms 27484 KB Output is correct
31 Correct 7 ms 27488 KB Output is correct
32 Correct 8 ms 27672 KB Output is correct
33 Correct 7 ms 27740 KB Output is correct
34 Correct 7 ms 27484 KB Output is correct
35 Correct 7 ms 27484 KB Output is correct
36 Correct 7 ms 27480 KB Output is correct
37 Correct 6 ms 27480 KB Output is correct
38 Correct 6 ms 27540 KB Output is correct
39 Correct 111 ms 43784 KB Output is correct
40 Correct 124 ms 43416 KB Output is correct
41 Incorrect 129 ms 42936 KB Output isn't correct
42 Halted 0 ms 0 KB -