結果
問題 | No.1473 おでぶなおばけさん |
ユーザー | Ahykw |
提出日時 | 2021-04-10 14:32:02 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 77 ms / 2,000 ms |
コード長 | 4,149 bytes |
コンパイル時間 | 3,746 ms |
コンパイル使用メモリ | 243,716 KB |
実行使用メモリ | 13,056 KB |
最終ジャッジ日時 | 2024-06-26 03:58:34 |
合計ジャッジ時間 | 8,085 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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 | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 77 ms
12,288 KB |
testcase_03 | AC | 56 ms
10,624 KB |
testcase_04 | AC | 39 ms
8,448 KB |
testcase_05 | AC | 14 ms
6,940 KB |
testcase_06 | AC | 58 ms
10,624 KB |
testcase_07 | AC | 77 ms
13,056 KB |
testcase_08 | AC | 77 ms
13,056 KB |
testcase_09 | AC | 75 ms
13,040 KB |
testcase_10 | AC | 37 ms
6,944 KB |
testcase_11 | AC | 38 ms
6,944 KB |
testcase_12 | AC | 37 ms
6,940 KB |
testcase_13 | AC | 24 ms
6,944 KB |
testcase_14 | AC | 18 ms
6,940 KB |
testcase_15 | AC | 34 ms
6,944 KB |
testcase_16 | AC | 37 ms
6,944 KB |
testcase_17 | AC | 4 ms
6,944 KB |
testcase_18 | AC | 6 ms
6,944 KB |
testcase_19 | AC | 32 ms
6,940 KB |
testcase_20 | AC | 44 ms
9,728 KB |
testcase_21 | AC | 47 ms
7,680 KB |
testcase_22 | AC | 59 ms
11,008 KB |
testcase_23 | AC | 50 ms
10,496 KB |
testcase_24 | AC | 49 ms
9,600 KB |
testcase_25 | AC | 63 ms
10,624 KB |
testcase_26 | AC | 66 ms
10,624 KB |
testcase_27 | AC | 26 ms
6,944 KB |
testcase_28 | AC | 69 ms
12,672 KB |
testcase_29 | AC | 44 ms
7,936 KB |
testcase_30 | AC | 51 ms
8,832 KB |
testcase_31 | AC | 66 ms
12,544 KB |
testcase_32 | AC | 47 ms
10,736 KB |
testcase_33 | AC | 41 ms
9,472 KB |
testcase_34 | AC | 23 ms
6,944 KB |
testcase_35 | AC | 23 ms
6,944 KB |
testcase_36 | AC | 48 ms
7,808 KB |
testcase_37 | AC | 50 ms
9,856 KB |
testcase_38 | AC | 11 ms
6,944 KB |
testcase_39 | AC | 37 ms
6,944 KB |
testcase_40 | AC | 37 ms
6,940 KB |
testcase_41 | AC | 35 ms
6,944 KB |
testcase_42 | AC | 35 ms
6,940 KB |
testcase_43 | AC | 40 ms
9,916 KB |
testcase_44 | AC | 40 ms
9,856 KB |
testcase_45 | AC | 40 ms
9,848 KB |
testcase_46 | AC | 50 ms
9,216 KB |
testcase_47 | AC | 63 ms
10,496 KB |
testcase_48 | AC | 57 ms
10,240 KB |
ソースコード
#pragma GCC optimize("O3") //#pragma GCC target("avx2") //#pragma GCC optimize("unroll-loops") #include <bits/stdc++.h> using namespace std; typedef long long ll; typedef unsigned long long ull; typedef long double ld; typedef vector<int> vi; typedef vector<ll> vll; typedef vector<ld> vld; typedef pair<ll,ll> Pll; typedef pair<int,int> Pin; ll INF = 1e16; int inf = 1e9; #define ALL(x) (x).begin(), (x).end() #define FOR(i, m, n) for (ll i = (m); i < (n); ++i) #define REVFOR(i, m, n) for (ll i = (n - 1); i >= (m); --i) #define REP(i, n) FOR(i, 0, n) #define REVREP(i, n) REVFOR(i, 0, n) #define fi first #define se second #define pb push_back #define mp make_pair #define eb emplace_back #define bcnt __builtin_popcountll #ifdef LOCAL #include <prettyprint.hpp> #define debug(...) cerr << "[" << #__VA_ARGS__ << "]: ", d_err(__VA_ARGS__); #else #define debug(...) 83; #endif void d_err() { cerr << endl; } template <typename H, typename... T> void d_err(H h, T... t) { cerr << h << " "; d_err(t...); } template <typename T> void print(T x) { cout << x << "\n"; } template <typename T> void print(vector<T>& x) { int N = x.size(); REP(i, N) { if (i > 0) cout << " "; cout << x[i]; } cout << "\n"; } // UnionFind with potential template<typename T> struct UnionFind { typedef function<T(const T&, const T&)> OP1; typedef function<T(const T&)> OP2; vector<int> par; vector<T> diff_weight; OP1 accum_op; OP1 diff_op; OP2 neg_op; UnionFind(int n, /// ↓ edit!!! OP1 accum_op=[](const T& a, const T& b) {return a + b;}, OP1 diff_op=[](const T& a, const T& b) {return a - b;}, OP2 neg_op=[](const T& a) {return -a;}, T unity=0 ): accum_op(accum_op), diff_op(diff_op), neg_op(neg_op) { init(n, unity); } void init(int n, T unity=0) { par.assign(n, -1); diff_weight.assign(n, unity); } int root(int x) { if (par[x] < 0) return x; int r = root(par[x]); diff_weight[x] = accum_op(diff_weight[x], diff_weight[par[x]]); return par[x] = r; } int issame(int x, int y) { return root(x) == root(y); } T weight(int x) { root(x); return diff_weight[x]; } // update with diff_op(weight(y), weight(x)) = w bool merge(int x, int y, T w = 0) { w = accum_op(w, weight(x)); w = diff_op(w, weight(y)); x = root(x); y = root(y); if (x == y) return false; // merge by size // force size of x to be bigger than that of y if (par[x] > par[y]) swap(x, y), w = neg_op(w); par[x] += par[y]; par[y] = x; diff_weight[y] = w; return true; } T diff(int x, int y) { return diff_op(weight(y), weight(x)); } ll size(int x) { return -par[root(x)]; } }; int main(){ cin.tie(0); ios_base::sync_with_stdio(false); cout << fixed << setprecision(20); int n, m; cin >> n >> m; vector<pair<ll, Pll>> dst(m); REP(i, m) { int s, t; ll d; cin >> s >> t >> d; dst[i] = make_pair(d, make_pair(s, t)); } sort(ALL(dst), greater<>()); UnionFind<ll> uf(n + 1); vector<vi> edge(n + 1); int i = 0; while(i < m) { ll w = dst[i].fi; while(i < m && dst[i].fi == w) { auto [s, t] = dst[i++].se; uf.merge(s, t); edge[s].eb(t); edge[t].eb(s); } if (uf.issame(1, n)) { vll dist(n + 1, INF); dist[1] = 0; queue<pair<int, int>> q; q.emplace(1, 0); while(q.size()) { auto [cur, d] = q.front(); q.pop(); ll d_nxt = d + 1; for(auto &e: edge[cur]) { if (dist[e] > d_nxt) { dist[e] = d_nxt; q.emplace(e, d_nxt); } } } cout << w << " " << dist[n] << endl; return 0; } } }