結果
問題 | No.2677 Minmax Independent Set |
ユーザー | leaf_1415 |
提出日時 | 2024-03-15 22:20:00 |
言語 | C++11 (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 212 ms / 2,000 ms |
コード長 | 11,064 bytes |
コンパイル時間 | 1,639 ms |
コンパイル使用メモリ | 131,276 KB |
実行使用メモリ | 52,388 KB |
最終ジャッジ日時 | 2024-09-30 01:42:23 |
合計ジャッジ時間 | 9,327 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 1 ms
6,820 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 2 ms
6,820 KB |
testcase_04 | AC | 2 ms
6,816 KB |
testcase_05 | AC | 170 ms
32,748 KB |
testcase_06 | AC | 163 ms
32,932 KB |
testcase_07 | AC | 165 ms
33,300 KB |
testcase_08 | AC | 164 ms
33,800 KB |
testcase_09 | AC | 172 ms
34,664 KB |
testcase_10 | AC | 140 ms
31,140 KB |
testcase_11 | AC | 131 ms
31,140 KB |
testcase_12 | AC | 190 ms
52,388 KB |
testcase_13 | AC | 194 ms
38,308 KB |
testcase_14 | AC | 178 ms
38,272 KB |
testcase_15 | AC | 208 ms
42,804 KB |
testcase_16 | AC | 200 ms
30,828 KB |
testcase_17 | AC | 201 ms
30,700 KB |
testcase_18 | AC | 125 ms
20,736 KB |
testcase_19 | AC | 144 ms
23,904 KB |
testcase_20 | AC | 35 ms
10,496 KB |
testcase_21 | AC | 168 ms
26,120 KB |
testcase_22 | AC | 9 ms
6,820 KB |
testcase_23 | AC | 2 ms
6,816 KB |
testcase_24 | AC | 2 ms
6,820 KB |
testcase_25 | AC | 2 ms
6,820 KB |
testcase_26 | AC | 2 ms
6,816 KB |
testcase_27 | AC | 2 ms
6,816 KB |
testcase_28 | AC | 120 ms
31,200 KB |
testcase_29 | AC | 187 ms
44,300 KB |
testcase_30 | AC | 1 ms
6,820 KB |
testcase_31 | AC | 2 ms
6,820 KB |
testcase_32 | AC | 1 ms
6,820 KB |
testcase_33 | AC | 1 ms
6,820 KB |
testcase_34 | AC | 2 ms
6,816 KB |
testcase_35 | AC | 2 ms
6,816 KB |
testcase_36 | AC | 2 ms
6,820 KB |
testcase_37 | AC | 2 ms
6,816 KB |
testcase_38 | AC | 2 ms
6,816 KB |
testcase_39 | AC | 2 ms
6,820 KB |
testcase_40 | AC | 3 ms
6,816 KB |
testcase_41 | AC | 5 ms
6,816 KB |
testcase_42 | AC | 8 ms
6,816 KB |
testcase_43 | AC | 16 ms
6,816 KB |
testcase_44 | AC | 32 ms
10,112 KB |
testcase_45 | AC | 84 ms
16,640 KB |
testcase_46 | AC | 188 ms
30,176 KB |
testcase_47 | AC | 202 ms
30,596 KB |
testcase_48 | AC | 212 ms
30,588 KB |
testcase_49 | AC | 197 ms
30,668 KB |
testcase_50 | AC | 43 ms
13,728 KB |
testcase_51 | AC | 4 ms
6,820 KB |
testcase_52 | AC | 105 ms
26,428 KB |
testcase_53 | AC | 96 ms
24,544 KB |
testcase_54 | AC | 4 ms
6,820 KB |
testcase_55 | AC | 145 ms
31,312 KB |
testcase_56 | AC | 154 ms
31,276 KB |
testcase_57 | AC | 156 ms
31,352 KB |
testcase_58 | AC | 152 ms
31,328 KB |
testcase_59 | AC | 143 ms
31,320 KB |
testcase_60 | AC | 78 ms
30,620 KB |
testcase_61 | AC | 83 ms
30,884 KB |
testcase_62 | AC | 84 ms
34,848 KB |
testcase_63 | AC | 87 ms
41,876 KB |
ソースコード
#include <iostream>#include <iomanip>#include <cstdio>#include <cmath>#include <ctime>#include <cstdlib>#include <cassert>#include <vector>#include <list>#include <stack>#include <queue>#include <deque>#include <map>#include <set>#include <bitset>#include <string>#include <algorithm>#include <utility>#include <complex>#include <array>#include <unordered_set>#include <unordered_map>#define rep(x, s, t) for(ll x = (s); (x) <= (t); (x)++)#define per(x, s, t) for(ll x = (s); (x) >= (t); (x)--)#define reps(x, s) for(ll x = 0; (x) < (ll)(s).size(); (x)++)#define pers(x, s) for(ll x = (ll)(s).size()-1; (x) >= 0; (x)--)#define chmin(x, y) (x) = min((x), (y))#define chmax(x, y) (x) = max((x), (y))#define sz(x) ((ll)(x).size())#define all(x) (x).begin(),(x).end()#define rall(x) (x).rbegin(),(x).rend()#define outl(...) dump_func(__VA_ARGS__)#define outf(x) cout << fixed << setprecision(16) << (x) << endl#define pb push_back#define fi first#define se second#define inf 2e18#define eps 1e-9const double PI = 3.1415926535897932384626433;using namespace std;typedef long long ll;typedef unsigned long long ull;typedef pair<ll, ll> P;struct edge{ll to, cost;edge(){}edge(ll a, ll b){ to = a, cost = b;}};const int dx[] = {1, 0, -1, 0}, dy[] = {0, -1, 0, 1};const int dx8[] = {1, 1, 0, -1, -1, -1, 0, 1}, dy8[] = {0, -1, -1, -1, 0, 1, 1, 1};const int mod = 998244353;//const int mod = 1000000007;struct mint{int x;mint(ll y = 0){if(y < 0 || y >= mod) y = (y%mod+mod)%mod; x = y;}mint(const mint &ope) {x = ope.x;}mint operator-(){return mint(-x);}mint operator+(const mint &ope){return mint(x) += ope;}mint operator-(const mint &ope){return mint(x) -= ope;}mint operator*(const mint &ope){return mint(x) *= ope;}mint operator/(const mint &ope){return mint(x) /= ope;}mint& operator+=(const mint &ope){x += ope.x; if(x >= mod) x -= mod; return *this;}mint& operator-=(const mint &ope){x += mod - ope.x; if(x >= mod) x -= mod; return *this;}mint& operator*=(const mint &ope){ll tmp = x; tmp *= ope.x, tmp %= mod; x = tmp; return *this;}mint& operator/=(const mint &ope){ll n = mod-2; mint mul = ope;while(n){if(n & 1) *this *= mul; mul *= mul; n >>= 1;}return *this;}mint inverse(){return mint(1) / *this;}bool operator ==(const mint &ope){return x == ope.x;}bool operator !=(const mint &ope){return x != ope.x;}bool operator <(const mint &ope)const{return x < ope.x;}};mint modpow(mint a, ll n){if(n == 0) return mint(1);if(n % 2) return a * modpow(a, n-1);else return modpow(a*a, n/2);}istream& operator >>(istream &is, mint &ope){ll t; is >> t, ope = mint(t); return is;}ostream& operator <<(ostream &os, mint &ope){return os << ope.x;}ostream& operator <<(ostream &os, const mint &ope){return os << ope.x;}ll modpow(ll a, ll n, ll mod){if(n == 0) return 1;if(n % 2) return ((a%mod) * (modpow(a, n-1, mod)%mod)) % mod;else return modpow((a*a)%mod, n/2, mod) % mod;}vector<mint> fact, fact_inv;void make_fact(int n){fact.resize(n+1), fact_inv.resize(n+1);fact[0] = mint(1); rep(i, 1, n) fact[i] = fact[i-1] * mint(i);fact_inv[n] = fact[n].inverse(); per(i, n-1, 0) fact_inv[i] = fact_inv[i+1] * mint(i+1);}mint comb(int n, int k){ if(n < 0 || k < 0 || n < k) return mint(0); return fact[n] * fact_inv[k] * fact_inv[n-k];}mint perm(int n, int k){ return comb(n, k) * fact[k]; }mint divide(int n, int k){ if(n == 0 && k == 0) return 1; return comb(n+k-1, k-1); }template<typename T> T comb2(ll n, ll k){ if(n < 0 || k < 0 || n < k) return T(0); T ret = 1; rep(i, 1, k) ret *= n-k+i, ret /= i; return ret;}vector<ll> prime, pvec, qrime;void make_prime(int n){prime.resize(n+1);rep(i, 2, n){if(prime[i] == 0) pvec.push_back(i), prime[i] = i;for(auto p : pvec){ if(i*p > n || p > prime[i]) break; prime[i*p] = p;}}}void make_qrime(int n){qrime.resize(n+1);rep(i, 2, n){int ni = i / prime[i]; if(prime[i] == prime[ni]) qrime[i] = qrime[ni] * prime[i]; else qrime[i] = prime[i];}}void factorize(ll n, map<ll, ll> &mp){mp.clear();for(auto p : pvec) while(n % p == 0) mp[p]++, n /= p;if(n > 1) mp[n]++;}bool exceed(ll x, ll y, ll m){return y > 0 && x >= m / y + 1;}void mark(){ cout << "*" << endl; }void yes(){ cout << "Yes" << endl; }void no(){ cout << "No" << endl; }ll floor(ll a, ll b){ if(b < 0) a *= -1, b *= -1; if(a >= 0) return a/b; else return -((-a+b-1)/b); }ll ceil(ll a, ll b){ if(b < 0) a *= -1, b *= -1; if(a >= 0) return (a+b-1)/b; else return -((-a)/b); }ll modulo(ll a, ll b){ b = abs(b); return a - floor(a, b) * b;}ll sgn(ll x){ if(x > 0) return 1; if(x < 0) return -1; return 0;}ll gcd(ll a, ll b){if(b == 0) return a; return gcd(b, a%b);}ll lcm(ll a, ll b){return a/gcd(a, b)*b;}template<typename T> T arith(T x){return x*(x+1)/2;}template<typename T> T arith2(T x){return x*(x+1)*(x*2+1)/6;}ll digitnum(ll x, ll b = 10){ll ret = 0; for(; x; x /= b) ret++; return ret;}ll digitsum(ll x, ll b = 10){ll ret = 0; for(; x; x /= b) ret += x % b; return ret;}string lltos(ll x, ll b = 10){if(x == 0) return "0"; string ret; for(;x;x/=b) ret += x % b + '0'; reverse(all(ret)); return ret;}ll stoll(string &s, ll b = 10){ll ret = 0; for(auto c : s) ret *= b, ret += c - '0'; return ret;}template<typename T> void uniq(T &vec){sort(all(vec)); vec.erase(unique(all(vec)), vec.end());}int popcount(ull x){x -= ((x>>1)&0x5555555555555555ULL), x = (x & 0x3333333333333333ULL) + ((x>>2) & 0x3333333333333333ULL);return (((x + (x>>4)) & 0x0F0F0F0F0F0F0F0FULL) * 0x0101010101010101ULL) >> 56;}template<typename T> vector<pair<T, ll>> rle(vector<T> vec){vector<pair<T, ll>> ret;for(auto x : vec){if(sz(ret) == 0 || ret.back().first != x) ret.push_back(P(x, 1)); else ret.back().second++;}return ret;}vector<pair<char, ll>> rle(string s){ vector<char> vec; for(auto c : s) vec.push_back(c); return rle(vec);}template<class S, class T> pair<S, T>& operator+=(pair<S, T> &s, const pair<S, T> &t){s.first += t.first, s.second += t.second; return s;}template<class S, class T> pair<S, T>& operator-=(pair<S, T> &s, const pair<S, T> &t){s.first -= t.first, s.second -= t.second; return s;}template<class S, class T> pair<S, T> operator+(const pair<S, T> &s, const pair<S, T> &t){return pair<S,T>(s.first+t.first, s.second+t.second);}template<class S, class T> pair<S, T> operator-(const pair<S, T> &s, const pair<S, T> &t){return pair<S,T>(s.first-t.first, s.second-t.second);}template<class T> T dot(const pair<T, T> &s, const pair<T, T> &t){return s.first*t.first + s.second*t.second;}template<class T> T cross(const pair<T, T> &s, const pair<T, T> &t){return s.first*t.second - s.second*t.first;}template<class T> T mdist(pair<T, T> s, pair<T, T> t){return abs(s.first-t.first) + abs(s.second-t.second);}template<class T> T cdist(pair<T, T> s, pair<T, T> t){return max(abs(s.first-t.first), abs(s.second-t.second));}template<class T> T edist2(pair<T, T> s, pair<T, T> t){return (s.first-t.first)*(s.first-t.first) + (s.second-t.second)*(s.second-t.second);}template<typename T> ostream& operator << (ostream& os, vector<T>& vec){reps(i, vec) os << vec[i] << " "; return os;}template<typename T> ostream& operator << (ostream& os, const vector<T>& vec){reps(i, vec) os << vec[i] << " "; return os;}template<typename T> ostream& operator << (ostream& os, list<T>& ls){for(auto x : ls) os << x << " "; return os;}template<typename T> ostream& operator << (ostream& os, const list<T>& ls){for(auto x : ls) os << x << " "; return os;}template<typename T> ostream& operator << (ostream& os, deque<T>& deq){reps(i, deq) os << deq[i] << " "; return os;}template<typename T, typename U> ostream& operator << (ostream& os, pair<T, U>& ope){ os << "(" << ope.first << ", " << ope.second << ")"; return os;}template<typename T, typename U> ostream& operator << (ostream& os, const pair<T, U>& ope){ os << "(" << ope.first << ", " << ope.second << ")";return os;}template<typename T, typename U> ostream& operator << (ostream& os, map<T, U>& ope){ for(auto p : ope) os << "(" << p.first << ", " << p.second << "),";return os;}template<typename T> ostream& operator << (ostream& os, set<T>& ope){for(auto x : ope) os << x << " "; return os;}template<typename T> ostream& operator << (ostream& os, multiset<T>& ope){for(auto x : ope) os << x << " "; return os;}template<typename T> void outa(T a[], ll s, ll t){rep(i, s, t){ cout << a[i]; if(i < t) cout << " ";} cout << endl;}template<typename T, size_t N> ostream& operator << (ostream& os, array<T, N>& arr){reps(i, arr) os << arr[i] << " "; return os;}template<typename T, size_t N> ostream& operator << (ostream& os, const array<T, N>& arr){reps(i, arr) os << arr[i] << " "; return os;}void dump_func(){cout << endl;}template <class Head, class... Tail>void dump_func(Head &&head, Tail &&... tail){cout << head; if(sizeof...(Tail) > 0) cout << " "; dump_func(std::move(tail)...);}template<typename T> void bssert(bool b, T t){ if(!b) cout << t << endl, exit(0); }struct Rerooting{typedef P T;struct edge{int to;edge(){}edge(int a){to = a;}};int n;vector<vector<edge> > G;vector<int> parent;vector<T> dp, dp2, ans;vector<T> lsum, rsum;Rerooting(){};Rerooting(int n){this->n = n;init();}void init(){G.clear(), G.resize(n+1);parent.resize(n+1);dp.resize(n+1), dp2.resize(n+1);lsum.resize(n+1), rsum.resize(n+1);ans.resize(n+1);}void add_edge(int u, int v){G[u].push_back(edge(v));G[v].push_back(edge(u));}T Ident(){ //return P(0, 0);}T ope(T a){ //swap(a.fi, a.se);chmax(a.se, a.fi);return a;}T ope2(T a, T b){ //return a + b;}T ope3(int v, T sum){ //sum.fi++;return sum;}T& get(int u, int v){if(parent[u] == v) return dp2[u];else return dp[v];}void dfs(int v, int p){parent[v] = p;for(auto e : G[v]) if(e.to != p) dfs(e.to, v);T sum = Ident();for(auto e : G[v]) if(e.to != p) sum = ope2(sum, ope(get(v, e.to)));dp[v] = ope3(v, sum);}void dfs2(int v, int p){ll m = sz(G[v]); T sum;sum = lsum[0] = Ident();rep(i, 0, m-1){sum = ope2(sum, ope(get(v, G[v][i].to)));lsum[i+1] = sum;}sum = rsum[m+1] = Ident();per(i, m-1, 0){sum = ope2(sum, ope(get(v, G[v][i].to)));rsum[i+1] = sum;}reps(i, G[v]){int u = G[v][i].to;if(u == p) continue;T sum = ope2(lsum[i], rsum[i+2]);dp2[u] = ope3(v, sum);}for(auto e : G[v]) if(e.to != p) dfs2(e.to, v);}void calc(){dfs(1, -1), dfs2(1, -1);rep(i, 1, n){T sum = Ident();for(auto e : G[i]) sum = ope2(sum, ope(get(i, e.to)));ans[i] = ope3(i, sum);}}void print(){rep(i, 1, n) for(auto e : G[i]) outl(i, "->", e.to, ":", get(i, e.to));}};ll n;int main(void){ios::sync_with_stdio(0);cin.tie(0);cin >> n;Rerooting rt(n);ll u, v;rep(i, 1, n-1){cin >> u >> v;rt.add_edge(u, v);}rt.calc();//for(auto p : rt.ans) outl(p);ll mans = inf;rep(i, 1, n) chmin(mans, rt.ans[i].fi);outl(mans);return 0;}