結果

問題 No.807 umg tours
ユーザー kurarrrkurarrr
提出日時 2019-03-22 22:03:46
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 402 ms / 4,000 ms
コード長 4,910 bytes
コンパイル時間 2,596 ms
コンパイル使用メモリ 212,216 KB
実行使用メモリ 26,556 KB
最終ジャッジ日時 2023-08-15 11:57:15
合計ジャッジ時間 8,237 ms
ジャッジサーバーID
（参考情報） 		judge15 / judge12
このコードへのチャレンジ
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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
4,380 KB
testcase_01 AC 2 ms
4,380 KB
testcase_02 AC 2 ms
4,376 KB
testcase_03 AC 1 ms
4,376 KB
testcase_04 AC 2 ms
4,376 KB
testcase_05 AC 2 ms
4,380 KB
testcase_06 AC 2 ms
4,376 KB
testcase_07 AC 1 ms
4,380 KB
testcase_08 AC 1 ms
4,380 KB
testcase_09 AC 2 ms
4,380 KB
testcase_10 AC 2 ms
4,380 KB
testcase_11 AC 213 ms
21,480 KB
testcase_12 AC 204 ms
15,536 KB
testcase_13 AC 278 ms
22,648 KB
testcase_14 AC 119 ms
12,808 KB
testcase_15 AC 101 ms
11,544 KB
testcase_16 AC 306 ms
23,332 KB
testcase_17 AC 364 ms
25,592 KB
testcase_18 AC 372 ms
25,644 KB
testcase_19 AC 402 ms
26,556 KB
testcase_20 AC 237 ms
17,152 KB
testcase_21 AC 253 ms
17,292 KB
testcase_22 AC 104 ms
8,900 KB
testcase_23 AC 81 ms
8,076 KB
testcase_24 AC 224 ms
21,692 KB
testcase_25 AC 349 ms
24,860 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

#ifdef DEBUG_IS_VALID
#define DEB 1 
#define _LIBCPP_DEBUG 0
#else
#define DEB 0
#define NDEBUG
#endif

#include "bits/stdc++.h"

#define ALL(g) (g).begin(),(g).end()
#define REP(i, x, n) for(int i = x; i < n; i++)
#define rep(i,n) REP(i,0,n)
#define RREP(i, x, n) for(int i = x; i >= n; i--)
#define rrep(i, n) RREP(i,n,0)
#define pb push_back
#pragma GCC optimize ("-O3")

using namespace std;

#define DUMPOUT cout
#define dump(...) if(DEB) DUMPOUT<<"  "<<#__VA_ARGS__<<" :["<<__LINE__<<":"<<__FUNCTION__<<"]"<<endl<<"    "; if(DEB) dump_func(__VA_ARGS__)
template<typename T1,typename T2>ostream& operator << (ostream& os, pair<T1,T2> p){cout << "(" << p.first << ", " << p.second << ")"; return os;}
template<typename T>ostream& operator << (ostream& os, vector<T>& vec) { os << "{"; for (int i = 0; i<vec.size(); i++) os << vec[i] << (i + 1 == vec.size() ? "" : ", "); os << "}"; return os; }
template<typename T>ostream& operator << (ostream& os, set<T>& st){cout << "{"; for(auto itr = st.begin(); itr != st.end(); itr++) cout << *itr << (next(itr)!=st.end() ? ", " : ""); cout << "}"; return os;}
template<typename T1,typename T2>ostream& operator << (ostream& os, map<T1,T2> mp){cout << "{"; for(auto itr = mp.begin(); itr != mp.end(); itr++) cout << "(" << (itr->first) << ", " << (itr->second) << ")" << (next(itr)!=mp.end() ? "," : ""); cout << "}"; return os; }

void dump_func(){DUMPOUT << endl;}
template <class Head, class... Tail>void dump_func(Head&& head, Tail&&... tail){ DUMPOUT << head; if (sizeof...(Tail) == 0) { DUMPOUT << " "; } else { DUMPOUT << ", "; } dump_func(std::move(tail)...);}
template<class T> inline bool chmax(T& a,T const& b){if(a>=b) return false; a=b; return true;}
template<class T> inline bool chmin(T& a,T const& b){if(a<=b) return false; a=b; return true;}
void _main();
int main(){ cin.tie(0); ios::sync_with_stdio(false); _main(); return 0;}

using ll = long long;
using P = pair<int,int>;
using Pl = pair<ll,ll>;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vvl = vector<vl>;

const int mod=1e9+7,INF=1<<29;
const double EPS=1e-5,PI=3.1415926535897932384626;
const ll lmod = 1e9+7,LINF=1LL<<59; 

using vd = vector<double>;
using vvd = vector<vd>;


namespace sub {
  template <typename T>
  constexpr typename std::enable_if<std::is_integral<T>::value, T>::type
  inf_sub() {
    return std::numeric_limits<T>::max() / 2 - 1000;
  }

  template <typename T>
  constexpr typename std::enable_if<std::is_floating_point<T>::value, T>::type
  inf_sub() {
    return std::min(std::numeric_limits<T>::max() / 2 - 1000, T(1e50));
  }
}  // namespace sub

/// @return Returns a large finite value representable by the numeric type T.
/// @note It is guaranteed that the return values is strictly less than std::numeric_limits<T>::max() / 2.
template <typename T> constexpr T inf() {
  static_assert(std::is_arithmetic<T>::value, "T must be arithmetic value");
  return sub::inf_sub<T>();
}

using Cost = ll;
using Node = int;
struct Edge{
  Cost cost; Node to;
  Edge(Cost cost,Node to)
    :cost(cost),to(to){}
};
ostream& operator << (ostream& os, Edge& e) {
  cout << "(" << e.cost << "," << e.to << ") "; return os;
}
using Graph = vector<vector<Edge>>;

vector<Cost> dijkstra
(Graph &graph, Node start, Cost zero = 0LL)
{
  using Pcn = pair<Cost,Node>;
  priority_queue<Pcn,vector<Pcn>,greater<Pcn>> que;
  vector<Cost> dist(graph.size(),inf<Cost>());
  dist[start] = zero;
  que.push(Pcn(zero,start));
  while(!que.empty()){
    Pcn p = que.top(); que.pop();
    Node v = p.second; //行き先
    if(dist[v] < p.first)  continue;
    for(Edge e : graph[v]){
      if(dist[v]+e.cost < dist[e.to]){
        dist[e.to] = dist[v]+e.cost;
        que.push(Pcn(dist[e.to],e.to));
      }
    }
  }
  return dist;
}

vector<Cost> dijkstra2
(Graph &graph,vector<Cost> &dist0, Node start, Cost zero = 0LL)
{
  using Pcn = pair<Cost,Node>;
  priority_queue<Pcn,vector<Pcn>,greater<Pcn>> que;
  vector<Cost> dist(graph.size(),inf<Cost>());
  int N = graph.size();
  dist[0] = 0;
  rep(i,N) for(auto&& e:graph[i]){
    que.push(Pcn(dist0[i],e.to));
    chmin(dist[e.to],dist0[i]);
  }
  while(!que.empty()){
    Pcn p = que.top(); que.pop();
    Node v = p.second; //行き先
    dump(v,p.first);
    if(dist[v] < p.first)  continue;
    dump(v,p.first);
    for(Edge e : graph[v]){
      if(dist[v]+e.cost < dist[e.to]){
        dist[e.to] = dist[v]+e.cost;
        que.push(Pcn(dist[e.to],e.to));
      }
    }
  }
  dump(dist);
  return dist;
}

void add_edge(Graph& g,int u,int v,ll c){
  g[u].pb(Edge(c,v));
  g[v].pb(Edge(c,u));
} 

void _main(){
  int N;
  cin >> N ;
  int M; cin >> M;
  Graph g(N);
  rep(i,M){
    int u,v; ll c; cin >> u >> v >> c ;
    u--; v--;
    add_edge(g,u,v,c);
  }
  dump(g);
  auto dist = dijkstra(g,0);
  dump(dist);
  auto dist2 = dijkstra2(g,dist,0);
  rep(i,N) cout << dist[i] + dist2[i] << endl;
}
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