結果
問題 | No.1752 Up-Down Tree |
ユーザー | heno239 |
提出日時 | 2021-11-20 12:22:21 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 50 ms / 2,000 ms |
コード長 | 4,142 bytes |
コンパイル時間 | 1,724 ms |
コンパイル使用メモリ | 155,360 KB |
実行使用メモリ | 22,784 KB |
最終ジャッジ日時 | 2024-06-11 04:50:39 |
合計ジャッジ時間 | 3,941 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
(要ログイン)
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 | 49 ms
22,784 KB |
testcase_01 | AC | 50 ms
22,784 KB |
testcase_02 | AC | 29 ms
9,760 KB |
testcase_03 | AC | 31 ms
9,760 KB |
testcase_04 | AC | 45 ms
16,380 KB |
testcase_05 | AC | 45 ms
18,560 KB |
testcase_06 | AC | 44 ms
14,384 KB |
testcase_07 | AC | 42 ms
14,380 KB |
testcase_08 | AC | 25 ms
6,944 KB |
testcase_09 | AC | 42 ms
8,832 KB |
testcase_10 | AC | 1 ms
6,940 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 2 ms
6,944 KB |
testcase_13 | AC | 20 ms
6,940 KB |
testcase_14 | AC | 24 ms
6,940 KB |
testcase_15 | AC | 6 ms
6,940 KB |
testcase_16 | AC | 23 ms
6,944 KB |
testcase_17 | AC | 19 ms
6,940 KB |
testcase_18 | AC | 46 ms
9,088 KB |
testcase_19 | AC | 44 ms
9,056 KB |
testcase_20 | AC | 2 ms
6,940 KB |
testcase_21 | AC | 2 ms
6,944 KB |
ソースコード
#pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include<iostream> #include<string> #include<cstdio> #include<vector> #include<cmath> #include<algorithm> #include<functional> #include<iomanip> #include<queue> #include<ciso646> #include<random> #include<map> #include<set> #include<bitset> #include<stack> #include<unordered_map> #include<unordered_set> #include<utility> #include<cassert> #include<complex> #include<numeric> #include<array> #include<chrono> using namespace std; //#define int long long typedef long long ll; typedef unsigned long long ul; typedef unsigned int ui; const ll mod = 998244353; const ll INF = mod * mod; typedef pair<int, int>P; #define rep(i,n) for(int i=0;i<n;i++) #define per(i,n) for(int i=n-1;i>=0;i--) #define Rep(i,sta,n) for(int i=sta;i<n;i++) #define rep1(i,n) for(int i=1;i<=n;i++) #define per1(i,n) for(int i=n;i>=1;i--) #define Rep1(i,sta,n) for(int i=sta;i<=n;i++) #define all(v) (v).begin(),(v).end() typedef pair<ll, ll> LP; typedef double ld; typedef pair<ld, ld> LDP; const ld eps = 1e-4; const ld pi = acosl(-1.0); template<typename T> void chmin(T& a, T b) { a = min(a, b); } template<typename T> void chmax(T& a, T b) { a = max(a, b); } ll mod_pow(ll x, ll n, ll m = mod) { if (n < 0) { ll res = mod_pow(x, -n, m); return mod_pow(res, m - 2, m); } if (abs(x) >= m)x %= m; if (x < 0)x += m; ll res = 1; while (n) { if (n & 1)res = res * x % m; x = x * x % m; n >>= 1; } return res; } struct modint { ll n; modint() :n(0) { ; } modint(ll m) :n(m) { if (n >= mod)n %= mod; else if (n < 0)n = (n % mod + mod) % mod; } operator int() { return n; } }; bool operator==(modint a, modint b) { return a.n == b.n; } modint operator+=(modint& a, modint b) { a.n += b.n; if (a.n >= mod)a.n -= mod; return a; } modint operator-=(modint& a, modint b) { a.n -= b.n; if (a.n < 0)a.n += mod; return a; } modint operator*=(modint& a, modint b) { a.n = ((ll)a.n * b.n) % mod; return a; } modint operator+(modint a, modint b) { return a += b; } modint operator-(modint a, modint b) { return a -= b; } modint operator*(modint a, modint b) { return a *= b; } modint operator^(modint a, ll n) { if (n == 0)return modint(1); modint res = (a * a) ^ (n / 2); if (n % 2)res = res * a; return res; } ll inv(ll a, ll p) { return (a == 1 ? 1 : (1 - p * inv(p % a, a)) / a + p); } modint operator/(modint a, modint b) { return a * modint(inv(b, mod)); } modint operator/=(modint& a, modint b) { a = a / b; return a; } const int max_n = 1 << 10; modint fact[max_n], factinv[max_n]; void init_f() { fact[0] = modint(1); for (int i = 0; i < max_n - 1; i++) { fact[i + 1] = fact[i] * modint(i + 1); } factinv[max_n - 1] = modint(1) / fact[max_n - 1]; for (int i = max_n - 2; i >= 0; i--) { factinv[i] = factinv[i + 1] * modint(i + 1); } } modint comb(int a, int b) { if (a < 0 || b < 0 || a < b)return 0; return fact[a] * factinv[b] * factinv[a - b]; } modint combP(int a, int b) { if (a < 0 || b < 0 || a < b)return 0; return fact[a] * factinv[a - b]; } int dx[4] = { 1,0,-1,0 }; int dy[4] = { 0,1,0,-1 }; using pr = priority_queue<int>; void solve() { int n; cin >> n; vector<vector<int>> G(n); rep(i, n - 1) { int a, b; cin >> a >> b; a--; b--; G[a].push_back(b); G[b].push_back(a); } function<pr(int, int)> dfs = [&](int id, int fr) { pr res; for (int to : G[id])if (to != fr) { pr nex = dfs(to, id); if (res.size() < nex.size())swap(res, nex); while (!nex.empty()) { int val = nex.top(); nex.pop(); res.push(val); } } if (res.empty()) { res.push(1); } else if (res.size() == 1) { int val = res.top(); res.pop(); val++; res.push(val); } else { int val1 = res.top(); res.pop(); int val2 = res.top(); res.pop(); if (val1 % 2 == 0 && val2 % 2 == 0) { res.push(val1 + val2); res.push(1); } else { res.push(val1 + val2 + 1); } } return res; }; pr p = dfs(0, -1); cout << p.top() << "\n"; } signed main() { ios::sync_with_stdio(false); cin.tie(0); //cout << fixed << setprecision(10); //init_f(); //init(); //int t; cin >> t; rep(i, t) solve(); return 0; }