結果
問題 | No.1473 おでぶなおばけさん |
ユーザー | h-izu |
提出日時 | 2022-05-18 00:05:16 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 6,771 bytes |
コンパイル時間 | 5,214 ms |
コンパイル使用メモリ | 285,036 KB |
実行使用メモリ | 13,888 KB |
最終ジャッジ日時 | 2024-09-15 22:57:20 |
合計ジャッジ時間 | 10,558 ms |
ジャッジサーバーID (参考情報) |
judge6 / judge2 |
(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 | 2 ms
10,752 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | TLE | - |
testcase_03 | -- | - |
testcase_04 | -- | - |
testcase_05 | -- | - |
testcase_06 | -- | - |
testcase_07 | -- | - |
testcase_08 | -- | - |
testcase_09 | -- | - |
testcase_10 | -- | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
testcase_43 | -- | - |
testcase_44 | -- | - |
testcase_45 | -- | - |
testcase_46 | -- | - |
testcase_47 | -- | - |
testcase_48 | -- | - |
ソースコード
#ifdef __LOCAL #define _GLIBCXX_DEBUG #endif #include <bits/stdc++.h> #include <atcoder/all> #include <vector> using namespace std; using namespace atcoder; typedef unsigned long long ull; typedef long long ll; const double PI = 3.14159265358979323846; #define rep(i, n) for (ll i = 0; i < (ll)(n); i++) // a^p // 2^3 = 2 * 2^2 // 2^2 = 2 * (2^1) // 2^1 = 2 ll modpow(ll a, ll p, ll mod) { if (p == 0) return 1; if (p % 2 == 0) { ll half = modpow(a, p / 2, mod) % mod; return half * half % mod; } else { return a * modpow(a, p - 1, mod) % mod; } } // a^p ll powpow(ll a, ll p) { if (p == 0) return 1; if (p % 2 == 0) { ll half = pow(a, p / 2); return half * half; } else { return a * pow(a, p - 1); } } // a/b // https://qiita.com/drken/items/3b4fdf0a78e7a138cd9a ll moddiv(ll a, ll b, ll mod) { return a * modpow(b, mod - 2, mod); } // nCa を求める ll modCombination(ll n, ll a, ll mod) { if (n < 0 || a < 0 || n < a) return 0; if (n - a < a) { return modCombination(n, n - a, mod); } ll denominator = 1; // 分母 ll numerator = 1; // 分子 for (ll i = 0; i < a; i++) { denominator *= a - i; numerator *= n - i; denominator %= mod; numerator %= mod; } return numerator * modpow(denominator, mod - 2, mod) % mod; } vector<vector<ll>> combination(ll n) { vector<vector<ll>> C(n + 1, vector<ll>(n + 1)); C[0][0] = 1; rep(i, n) rep(j, i + 1) { C[i + 1][j + 1] += C[i][j]; C[i + 1][j] += C[i][j]; } return C; } // ref. https://drken1215.hatenablog.com/entry/2018/06/08/210000 class ModCombinationTale { private: ll n; ll mod; vector<ll> fac, finv, inv; public: ModCombinationTale(ll n, ll mod) : n(n), mod(mod) { fac.resize(n + 1); finv.resize(n + 1); inv.resize(n + 1); fac[0] = fac[1] = 1; finv[0] = finv[1] = 1; inv[1] = 1; for (ll i = 2; i <= n; i++) { fac[i] = fac[i - 1] * i % mod; inv[i] = mod - inv[mod % i] * (mod / i) % mod; finv[i] = finv[i - 1] * inv[i] % mod; } } ll operator()(ll n, ll k) { if (n < k) return 0; if (n < 0 || k < 0) return 0; return fac[n] * (finv[k] * finv[n - k] % mod) % mod; } }; class UnionFind { private: vector<ll> parents; public: UnionFind(ll n) : parents(n, -1) {} bool issame(ll x, ll y) { return root(x) == root(y); } bool merge(ll x, ll y) { if (issame(x, y)) return false; ll rx = root(x); ll ry = root(y); if (parents[rx] > parents[ry]) swap(rx, ry); // サイズ情報を更新 parents[rx] += parents[ry]; // yの親を更新 parents[ry] = rx; return true; } ll size(ll x) { return -parents[root(x)]; } ll root(ll x) { if (parents[x] < 0) return x; // 根の親の値に木の(-)サイズの情報を入れる return parents[x] = root(parents[x]); } }; // cf. https://qiita.com/drken/items/a14e9af0ca2d857dad23 vector<ll> enum_divisors(ll n) { vector<ll> res; // sqrt(n)まで試し割り for (ll i = 1; i * i <= n; i++) { if (n % i == 0) { res.push_back(i); // 重複しないならばiの相方であるn/iも約数 // e.g. n=25のときのi=5は重複 if (n / i != i) res.push_back(n / i); } } sort(res.begin(), res.end()); return res; } // cf. https://qiita.com/drken/items/a14e9af0ca2d857dad23 map<ll, ll> prime_factors(ll n) { map<ll, ll> res; // sqrt(n)まで試し割り for (ll a = 2; a * a <= n; a++) { if (n % a != 0) continue; // nで割れる限り割る while (n % a == 0) { res[a]++; n /= a; } } if (n != 1) res[n]++; return res; } ll gcd(ll a, ll b) { if (b == 0) return a; else return gcd(b, a % b); } ll lcm(ll a, ll b) { return (a / gcd(a, b)) * b; } // cf. https://qiita.com/drken/items/56a6b68edef8fc605821 class AccumSum2D { private: vector<vector<ll>> sum; ll H; ll W; public: AccumSum2D(vector<vector<ll>> &A) { H = (ll)A.size(); W = (ll)A[0].size(); sum.resize(H + 1, vector<ll>(W + 1)); for (ll i = 0; i < H; i++) { for (ll j = 0; j < W; j++) { sum[i + 1][j + 1] = sum[i][j + 1] + sum[i + 1][j] - sum[i][j] + A[i][j]; } } } // クエリ [x1, x2) × [y1, y2) の長方形区域の和 ll Sum(ll x1, ll x2, ll y1, ll y2) { return sum[x2][y2] - sum[x1][y2] - sum[x2][y1] + sum[x1][y1]; } }; // p/q struct fraction { ll p, q; fraction(ll _p = 0, ll _q = 1) : p(_p), q(_q) { if (q == 0) { p = 1; return; } ll g = gcd(p, q); p /= g; q /= g; } bool operator<(const fraction &other) const { return p * other.q < q * other.p; } bool operator<=(const fraction &other) const { return p * other.q <= q * other.p; } bool operator==(const fraction &other) const { return p == other.p && q == other.q; } }; // res[i][c] := i 文字目以降で最初に文字 c が登場する index (存在しないときは n) vector<vector<ll>> calcNext(const string &S) { ll n = (ll)S.size(); vector<vector<ll>> res(n + 1, vector<ll>(26, n)); for (ll i = n - 1; i >= 0; --i) { for (ll j = 0; j < 26; ++j) res[i][j] = res[i + 1][j]; res[i][S[i] - 'a'] = i; } return res; } struct Edge { ll to, d; Edge(ll to, ll d) : to(to), d(d) {} }; int main() { cin.tie(nullptr); ios_base::sync_with_stdio(false); cout << fixed << setprecision(15); ll N, M; cin >> N >> M; vector G(N, vector<Edge>()); rep(i, M) { ll s, t, d; cin >> s >> t >> d; s--; t--; G[s].emplace_back(t, d); G[t].emplace_back(s, d); } auto is_ok = [&](ll x) -> bool { vector<bool> visited(N); bool ret = false; auto dfs = [&](auto f, ll node, vector<bool> &visited) -> void { if (node == N - 1) { ret = true; visited[node] = false; // cout << node << endl; return; } // cout << node << " -> "; visited[node] = true; for (auto e : G[node]) { if (visited[e.to]) continue; if (e.d < x) continue; f(f, e.to, visited); } visited[node] = false; }; dfs(dfs, 0, visited); return ret; }; // cout << is_ok(4) << endl; ll ng = ll(1e9) + 1; ll ok = 0; while (abs(ok - ng) > 1) { ll mid = (ok + ng) / 2; if (is_ok(mid)) { ok = mid; } else { ng = mid; } } ll INF = 1e18; vector<ll> dist(N, INF); dist[0] = 0; queue<ll> q; q.push(0); while (q.size()) { ll node = q.front(); q.pop(); for (auto e : G[node]) { if (e.d < ok) continue; if (dist[e.to] > dist[node] + 1) { dist[e.to] = dist[node] + 1; q.push(e.to); } } } cout << ok << " " << dist[N - 1] << endl; return 0; }