結果
| 問題 |
No.1690 Power Grid
|
| コンテスト | |
| ユーザー |
theory_and_me
|
| 提出日時 | 2021-09-24 22:37:03 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 137 ms / 3,000 ms |
| コード長 | 4,293 bytes |
| コンパイル時間 | 2,201 ms |
| コンパイル使用メモリ | 205,244 KB |
| 最終ジャッジ日時 | 2025-01-24 17:34:51 |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 25 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) for(ll i=0;i<(ll)n;i++)
#define dump(x) cerr << "Line " << __LINE__ << ": " << #x << " = " << (x) << "\n";
#define spa << " " <<
#define fi first
#define se second
#define ALL(a) (a).begin(),(a).end()
#define ALLR(a) (a).rbegin(),(a).rend()
using ld = long double;
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pdd = pair<ld, ld>;
template<typename T> using V = vector<T>;
template<typename T> using P = pair<T, T>;
template<typename T> vector<T> make_vec(size_t n, T a) { return vector<T>(n, a); }
template<typename... Ts> auto make_vec(size_t n, Ts... ts) { return vector<decltype(make_vec(ts...))>(n, make_vec(ts...)); }
template<class S, class T> ostream& operator << (ostream& os, const pair<S, T> v){os << "(" << v.first << ", " << v.second << ")"; return os;}
template<typename T> ostream& operator<<(ostream &os, const vector<T> &v) { for (auto &e : v) os << e << ' '; return os; }
template<class T> ostream& operator<<(ostream& os, const vector<vector<T>> &v){ for(auto &e : v){os << e << "\n";} return os;}
struct fast_ios { fast_ios(){ cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;
template <class T> void UNIQUE(vector<T> &x) {sort(ALL(x));x.erase(unique(ALL(x)), x.end());}
template<class T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T> bool chmin(T &a, const T &b) { if (a>b) { a=b; return 1; } return 0; }
void fail() { cout << -1 << '\n'; exit(0); }
inline int popcount(const int x) { return __builtin_popcount(x); }
inline int popcount(const ll x) { return __builtin_popcountll(x); }
template<typename T> void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
{cerr<<v[i][0];for(ll j=1;j<w;j++)cerr spa v[i][j];cerr<<"\n";}};
template<typename T> void debug(vector<T>&v,ll n){if(n!=0)cerr<<v[0];
for(ll i=1;i<n;i++)cerr spa v[i];
cerr<<"\n";};
const ll INF = (1ll<<62);
// const ld EPS = 1e-10;
// const ld PI = acos(-1.0);
const ll mod = (int)1e9 + 7;
//const ll mod = 998244353;
template< typename T >
struct edge {
int src, to;
T cost;
edge(int to, T cost) : src(-1), to(to), cost(cost) {}
edge(int src, int to, T cost) : src(src), to(to), cost(cost) {}
edge &operator=(const int &x) {
to = x;
return *this;
}
operator int() const { return to; }
};
template< typename T >
using Edges = vector< edge< T > >;
template< typename T >
using WeightedGraph = vector< Edges< T > >;
using UnWeightedGraph = vector< vector< int > >;
template< typename T >
using Matrix = vector< vector< T > >;
template< typename T >
Matrix< T > WarshallFloyd_matrix(WeightedGraph< T > &g, T INF) {
const ll V = g.size();
Matrix<ll> D(V, vector<ll>(V, INF));
REP(i, V) D[i][i] = 0;
for(int i=0;i<V;i++){
for(auto &e: g[i]){
D[i][e.to] = e.cost;
}
}
for(int k = 0; k < (int)D.size(); k++) {
for(int i = 0; i < (int)D.size(); i++) {
for(int j = 0; j < (int)D.size(); j++) {
if(D[i][k] == INF || D[k][j] == INF) continue;
D[i][j] = min(D[i][j], D[i][k] + D[k][j]);
}
}
}
return D;
}
int main(){
ll N, M, K;
cin >> N >> M >> K;
V<ll> A(N);
REP(i, N) cin >> A[i];
V<ll> X(M), Y(M), Z(M);
REP(i, M) cin >> X[i] >> Y[i] >> Z[i], X[i]--, Y[i]--;
WeightedGraph<ll> G(N);
REP(i, M){
G[X[i]].emplace_back(Y[i], Z[i]);
G[Y[i]].emplace_back(X[i], Z[i]);
}
auto D = WarshallFloyd_matrix(G, INF);
ll MA = 1<<N;
V<ll> dp(MA, INF);
dp[0] = 0;
REP(mask, MA){
REP(i, N){
if(!(mask >> i & 1)){
if(mask == 0){
chmin(dp[mask ^ (1<<i)], dp[mask] + A[i]);
}else{
ll mi = INF;
REP(j, N){
if(mask >> j & 1){
chmin(mi, D[i][j]);
}
}
chmin(dp[mask ^ (1<<i)], dp[mask] + A[i] + mi);
}
}
}
}
ll res = INF;
REP(mask, MA){
if(popcount(mask) == K) chmin(res, dp[mask]);
}
cout << res << endl;
return 0;
}
theory_and_me