#943792 (C++17) No.2604 Initial Motion

提出ソース

結果

問題	No.2604 Initial Motion
ユーザー	dyktr_06
提出日時	2024-01-12 23:36:07
言語	C++17 (gcc 12.3.0 + boost 1.83.0)
結果	AC
実行時間	766 ms / 3,000 ms
コード長	7,582 bytes
コンパイル時間	2,675 ms
コンパイル使用メモリ	220,288 KB
実行使用メモリ	6,948 KB
最終ジャッジ日時	2024-09-28 00:20:28
合計ジャッジ時間	15,425 ms
ジャッジサーバーID （参考情報）	judge1 / judge5

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 6,812 KB
testcase_01	AC	2 ms 6,940 KB
testcase_02	AC	2 ms 6,940 KB
testcase_03	AC	21 ms 6,940 KB
testcase_04	AC	21 ms 6,940 KB
testcase_05	AC	21 ms 6,944 KB
testcase_06	AC	21 ms 6,944 KB
testcase_07	AC	22 ms 6,944 KB
testcase_08	AC	21 ms 6,940 KB
testcase_09	AC	20 ms 6,944 KB
testcase_10	AC	21 ms 6,940 KB
testcase_11	AC	22 ms 6,940 KB
testcase_12	AC	21 ms 6,940 KB
testcase_13	AC	588 ms 6,940 KB
testcase_14	AC	338 ms 6,940 KB
testcase_15	AC	245 ms 6,948 KB
testcase_16	AC	509 ms 6,940 KB
testcase_17	AC	766 ms 6,940 KB
testcase_18	AC	703 ms 6,944 KB
testcase_19	AC	660 ms 6,940 KB
testcase_20	AC	484 ms 6,940 KB
testcase_21	AC	362 ms 6,944 KB
testcase_22	AC	665 ms 6,940 KB
testcase_23	AC	394 ms 6,944 KB
testcase_24	AC	569 ms 6,944 KB
testcase_25	AC	714 ms 6,944 KB
testcase_26	AC	464 ms 6,940 KB
testcase_27	AC	276 ms 6,940 KB
testcase_28	AC	411 ms 6,940 KB
testcase_29	AC	578 ms 6,940 KB
testcase_30	AC	315 ms 6,940 KB
testcase_31	AC	454 ms 6,940 KB
testcase_32	AC	428 ms 6,944 KB
testcase_33	AC	4 ms 6,940 KB
testcase_34	AC	390 ms 6,944 KB
testcase_35	AC	395 ms 6,940 KB
testcase_36	AC	383 ms 6,944 KB
testcase_37	AC	3 ms 6,940 KB
testcase_38	AC	3 ms 6,944 KB
testcase_39	AC	2 ms 6,944 KB
testcase_40	AC	267 ms 6,940 KB
testcase_41	AC	271 ms 6,940 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

raw source code

#include <bits/stdc++.h>

using namespace std;

#define overload4(_1, _2, _3, _4, name, ...) name
#define rep1(n) for(int i = 0; i < (int)(n); ++i)
#define rep2(i, n) for(int i = 0; i < (int)(n); ++i)
#define rep3(i, a, b) for(int i = (a); i < (int)(b); ++i)
#define rep4(i, a, b, c) for(int i = (a); i < (int)(b); i += (c))
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)

#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; --i)
#define ALL(a) (a).begin(), (a).end()
#define Sort(a) (sort((a).begin(), (a).end()))
#define RSort(a) (sort((a).rbegin(), (a).rend()))
#define UNIQUE(a) (a.erase(unique((a).begin(), (a).end()), (a).end()))

typedef long long int ll;
typedef unsigned long long ul;
typedef long double ld;
typedef vector<int> vi;
typedef vector<long long> vll;
typedef vector<char> vc;
typedef vector<string> vst;
typedef vector<double> vd;
typedef vector<long double> vld;
typedef pair<long long, long long> P;

template<class T> long long sum(const T& a){ return accumulate(a.begin(), a.end(), 0LL); }
template<class T> auto min(const T& a){ return *min_element(a.begin(), a.end()); }
template<class T> auto max(const T& a){ return *max_element(a.begin(), a.end()); }

const long long MINF = 0x7fffffffffff;
const long long INF = 0x1fffffffffffffff;
const long long MOD = 998244353;
const long double EPS = 1e-9;
const long double PI = acos(-1);
 
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

template<typename T1, typename T2> istream &operator>>(istream &is, pair<T1, T2> &p){ is >> p.first >> p.second; return is; }
template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p){ os << "(" << p.first << ", " << p.second << ")"; return os; }
template<typename T> istream &operator>>(istream &is, vector<T> &v){ for(T &in : v) is >> in; return is; }
template<typename T> ostream &operator<<(ostream &os, const vector<T> &v){ for(int i = 0; i < (int) v.size(); ++i){ os << v[i] << (i + 1 != (int) v.size() ? " " : ""); } return os; }
template <typename T, typename S> ostream &operator<<(ostream &os, const map<T, S> &mp){ for(auto &[key, val] : mp){ os << key << ":" << val << " "; } return os; }
template <typename T> ostream &operator<<(ostream &os, const set<T> &st){ auto itr = st.begin(); for(int i = 0; i < (int)st.size(); ++i){ os << *itr << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; }
template <typename T> ostream &operator<<(ostream &os, const multiset<T> &st){ auto itr = st.begin(); for(int i = 0; i < (int)st.size(); ++i){ os << *itr << (i + 1 != (int)st.size() ? " " : ""); itr++; } return os; }
template <typename T> ostream &operator<<(ostream &os, queue<T> q){ while(q.size()){ os << q.front() << " "; q.pop(); } return os; }
template <typename T> ostream &operator<<(ostream &os, deque<T> q){ while(q.size()){ os << q.front() << " "; q.pop_front(); } return os; }
template <typename T> ostream &operator<<(ostream &os, stack<T> st){ while(st.size()){ os << st.top() << " "; st.pop(); } return os; }
template <class T, class Container, class Compare> ostream &operator<<(ostream &os, priority_queue<T, Container, Compare> pq){ while(pq.size()){ os << pq.top() << " "; pq.pop(); } return os; }

template<class T, class U> inline T vin(T& vec, U n) { vec.resize(n); for(int i = 0; i < (int) n; ++i) cin >> vec[i]; return vec; }
template<class T> inline void vout(T vec, string s = "\n"){ for(auto x : vec) cout << x << s; }
template<class... T> void in(T&... a){ (cin >> ... >> a); }
void out(){ cout << '\n'; }
template<class T, class... Ts> void out(const T& a, const Ts&... b){ cout << a; (cout << ... << (cout << ' ', b)); cout << '\n'; }
template<class T, class U> void inGraph(vector<vector<T>>& G, U n, U m, bool directed = false){ G.resize(n); for(int i = 0; i < m; ++i){ int a, b; cin >> a >> b; a--, b--; G[a].push_back(b); if(!directed) G[b].push_back(a); } }

template< typename flow_t, typename cost_t >
struct PrimalDual {
  const cost_t INF;

  struct edge {
    int to;
    flow_t cap;
    cost_t cost;
    int rev;
    bool isrev;
  };
  vector< vector< edge > > graph;
  vector< cost_t > potential, min_cost;
  vector< int > prevv, preve;

  PrimalDual(int V) : graph(V), INF(numeric_limits< cost_t >::max()) {}

  void add_edge(int from, int to, flow_t cap, cost_t cost) {
    graph[from].emplace_back((edge) {to, cap, cost, (int) graph[to].size(), false});
    graph[to].emplace_back((edge) {from, 0, -cost, (int) graph[from].size() - 1, true});
  }

  cost_t min_cost_flow(int s, int t, flow_t f) {
    int V = (int) graph.size();
    cost_t ret = 0;
    using Pi = pair< cost_t, int >;
    priority_queue< Pi, vector< Pi >, greater< Pi > > que;
    potential.assign(V, 0);
    preve.assign(V, -1);
    prevv.assign(V, -1);

    while(f > 0) {
      min_cost.assign(V, INF);
      que.emplace(0, s);
      min_cost[s] = 0;
      while(!que.empty()) {
        Pi p = que.top();
        que.pop();
        if(min_cost[p.second] < p.first) continue;
        for(int i = 0; i < graph[p.second].size(); i++) {
          edge &e = graph[p.second][i];
          cost_t nextCost = min_cost[p.second] + e.cost + potential[p.second] - potential[e.to];
          if(e.cap > 0 && min_cost[e.to] > nextCost) {
            min_cost[e.to] = nextCost;
            prevv[e.to] = p.second, preve[e.to] = i;
            que.emplace(min_cost[e.to], e.to);
          }
        }
      }
      if(min_cost[t] == INF) return -1;
      for(int v = 0; v < V; v++) potential[v] += min_cost[v];
      flow_t addflow = f;
      for(int v = t; v != s; v = prevv[v]) {
        addflow = min(addflow, graph[prevv[v]][preve[v]].cap);
      }
      f -= addflow;
      ret += addflow * potential[t];
      for(int v = t; v != s; v = prevv[v]) {
        edge &e = graph[prevv[v]][preve[v]];
        e.cap -= addflow;
        graph[v][e.rev].cap += addflow;
      }
    }
    return ret;
  }

  void output() {
    for(int i = 0; i < graph.size(); i++) {
      for(auto &e : graph[i]) {
        if(e.isrev) continue;
        auto &rev_e = graph[e.to][e.rev];
        cout << i << "->" << e.to << " (flow: " << rev_e.cap << "/" << rev_e.cap + e.cap << ")" << endl;
      }
    }
  }
};

template <typename T>
vector<long long> dijkstra(const vector<vector<array<long long, 2>>> &G, T x){
    const long long INF = 0x1fffffffffffffff;
    vector<long long> cost((int) G.size(), INF);
    using P = pair<long long, long long>;
    priority_queue<P, vector<P>, greater<>> q;
    cost[x] = 0;
    q.emplace(0, x);
    
    while(q.size()){
        auto [c, at] = q.top();
        q.pop();
        if(c > cost[at]) continue;
        for(auto& [to, t] : G[at]){
            if(cost[to] > c + t){
                cost[to] = c + t;
                q.emplace(cost[to], to);
            }
        }
    }
    return cost;
}

ll k, n, m;
vll a, b;

void input(){
    in(k, n, m);
    vin(a, k);
    vin(b, n);
}

void solve(){
    PrimalDual<ll, ll> G(n + 2);
    rep(i, m){
        ll u, v, d; in(u, v, d);
        u--, v--;
        G.add_edge(u, v, 1e9, d);
        G.add_edge(v, u, 1e9, d);
    }
    vll cnt(n);
    rep(i, k){
        cnt[--a[i]]++;
    }
    ll s = n;
    ll t = n + 1;
    rep(i, n){
        G.add_edge(s, i, cnt[i], 0);
        G.add_edge(i, t, b[i], 0);
    }
    out(G.min_cost_flow(s, t, k));
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(20);
    
    input();
    solve();
}

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結果

テストケース

ソースコード