結果
| 問題 |
No.788 トラックの移動
|
| コンテスト | |
| ユーザー |
 ganariya
|
| 提出日時 | 2019-03-06 21:44:23 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 527 ms / 2,000 ms |
| コード長 | 8,248 bytes |
| コンパイル時間 | 1,841 ms |
| コンパイル使用メモリ | 149,732 KB |
| 最終ジャッジ日時 | 2025-01-06 22:00:32 |
|
ジャッジサーバーID （参考情報） |
judge2 / judge4 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 14 |
ソースコード
//
//
// Codeforces: ganariya
// AtCoder: ganariya2525
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMHBYYYWMMMM#BYYTTTYWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMB9O1==?????zzCC111>>;;;;;;;;;;;<?TMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMMMMMMMMMMMMM9Olll=l======??????????>>>>>>;;;;;;;;;:;?TMMMMMMMMMMMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMMMMMMMMMM9ttlllllllll=l=======?????????>>>>>>;;;;;;;;;;?TMMMMMMMMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMMMMMMMBOttOtttttltlllllllll=======??????????>>>>>>>;;;;;;?TMMMMMMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMMMMMBttwOtttttttttttttlllllllll========?????????>>>>>>;;;;;<TMMMMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMMMBrwZrttttttttttttttttttlllllllllll======???????????>>>>>>;;?HMMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMMSw0trtrrtrtrttrtttttttttttttlllOllllll========????<<zz??>>>>>>ZMMMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMMMX0ttrtrOOttrttrttOOttttttttttttltwllllllllll========??wy?????>>>vZMMMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMMM0ttrI+wV1rtttttttwZtttttttltttOwylOXOllllllllllll=l====1dkz???????vZdMMMMMMMMMMMMMM
// MMMMMMMMMMMMMMMSrrwrtwZCjttttttttwSttOlllltllllwtXOlZkOlllllllllllllll==z+dk===?????X2JMMMMMMMMMMMMM
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// MMMMMMMMMMMMStwdZtwXC<+ttttttOOOd6ltZlltllllttllStWWOOHWytttttltltOllltllz:zHllll===zX=?dMMMMMMMMMMM
// MMMMMMMMMMBrwdKOtwW3;;zrttttwZwXRlldOllltltlltttwlXvktdXWytltttttttOttlttl<<dklllllllZ===dMMMMMMMMMM
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//include
//------------------------------------------
#include <vector>
#include <list>
#include <map>
#include <unordered_map>
#include <climits>
#include <set>
#include <unordered_set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <queue>
#include <random>
#include <complex>
#include <regex>
#include <locale>
#include <random>
using namespace std;
#define SHOW_VECTOR(v) {std::cerr << #v << "\t:";for(const auto& xxx : v){std::cerr << xxx << " ";}std::cerr << "\n";}
#define SHOW_MAP(v){std::cerr << #v << endl; for(const auto& xxx: v){std::cerr << xxx.first << " " << xxx.second << "\n";}}
using LL = long long;
//~~~~~~~~~~~~~~~~~~~~~_(＾～＾ ｣ ∠)_~~~~~~~~~~~~~~~~~~~~~
constexpr int MAX_V = 2020;
constexpr LL INF = 1e17;
typedef pair<LL, int> PLI;
struct edge {
LL to;
LL cost;
};
vector<edge> G[MAX_V];
void dijkstra(int s, vector<LL> &dist) {
dist[s] = 0;
priority_queue<PLI, vector<PLI>, greater<PLI>> Q;
Q.push(make_pair(0, s));
while (!Q.empty()) {
auto p = Q.top();
Q.pop();
int v = p.second;
LL cost = p.first;
if (cost > dist[v]) continue;
for (int i = 0; i < G[v].size(); i++) {
edge &e = G[v][i];
if (dist[e.to] > dist[v] + e.cost) {
dist[e.to] = dist[v] + e.cost;
Q.push(make_pair(dist[e.to], e.to));
}
}
}
}
int main() {
int N, M, L;
cin >> N >> M >> L, L--;
int cnt = 0;
vector<LL> t(N);
for (int i = 0; i < N; i++) cin >> t[i];
for (int i = 0; i < N; i++) if (t[i]) cnt++;
if (cnt == 1) {
cout << 0 << endl;
return 0;
}
vector<LL> a(M), b(M), c(M);
for (int i = 0; i < M; i++) {
cin >> a[i] >> b[i] >> c[i];
a[i]--, b[i]--;
G[a[i]].push_back(edge({b[i], c[i]}));
G[b[i]].push_back(edge({a[i], c[i]}));
}
vector<vector<LL>> dist(N, vector<LL>(N, INF));
for (int i = 0; i < N; i++) dijkstra(i, dist[i]);
LL ans = INF;
for (int i = 0; i < N; i++) {
LL cost = 0;
for (int j = 0; j < N; j++) cost += dist[i][j] * t[j] * 2LL;
for (int j = 0; j < N; j++) {
LL c = cost;
if (t[j]) {
c += dist[L][j];
c -= dist[j][i];
ans = min(c, ans);
}
}
}
cout << ans << endl;
return 0;
}