結果
問題 | No.1065 電柱 / Pole (Easy) |
ユーザー |
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提出日時 | 2020-05-29 22:04:10 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 333 ms / 2,000 ms |
コード長 | 2,520 bytes |
コンパイル時間 | 3,374 ms |
コンパイル使用メモリ | 210,792 KB |
最終ジャッジ日時 | 2025-01-10 17:16:12 |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 46 |
ソースコード
#include <bits/stdc++.h> #define rep(i, n) for (int i = 0; i < int(n); i++) #define rrep(i, n) for (int i = int(n) - 1; i >= 0; i--) #define reps(i, n) for (int i = 1; i <= int(n); i++) #define rreps(i, n) for (int i = int(n); i >= 1; i--) #define repc(i, n) for (int i = 0; i <= int(n); i++) #define rrepc(i, n) for (int i = int(n); i >= 0; i--) #define repi(i, a, b) for (int i = int(a); i < int(b); i++) #define repic(i, a, b) for (int i = int(a); i <= int(b); i++) #define all(a) (a).begin(), (a).end() #define bit32(x) (1 << (x)) #define bit64(x) (1ll << (x)) #define sz(v) ((int) v.size()) using namespace std; using i64 = long long; using f80 = long double; using vi32 = vector<int>; using vi64 = vector<i64>; using vf80 = vector<f80>; using vstr = vector<string>; void yes() { cout << "Yes" << endl; exit(0); } void no() { cout << "No" << endl; exit(0); } template <typename T> class pqasc : public priority_queue<T, vector<T>, greater<T>> {}; template <typename T> class pqdesc : public priority_queue<T, vector<T>, less<T>> {}; template <typename T> void amax(T &x, T y) { x = max(x, y); } template <typename T> void amin(T &x, T y) { x = min(x, y); } template <typename T> T exp(T x, i64 n, T e = 1) { T r = e; while (n > 0) { if (n & 1) r *= x; x *= x; n >>= 1; } return r; } template <typename T> istream& operator>>(istream &is, vector<T> &v) { for (auto &x : v) is >> x; return is; } template <typename T> ostream& operator<<(ostream &os, vector<T> &v) { rep(i, v.size()) { if (i) os << ' '; os << v[i]; } return os; } void solve(); int main() { ios::sync_with_stdio(0); cin.tie(0); cout << fixed << setprecision(16); solve(); return 0; } const int INF = 1001001001; const int dx[] = {1, 0, -1, 0}; const int dy[] = {0, 1, 0, -1}; void solve() { int n, m, X, Y; cin >> n >> m >> X >> Y; X--, Y--; using P = pair<int, double>; vector<vector<P>> g(n); vi32 p(n), q(n); rep(i, n) cin >> p[i] >> q[i]; rep(i, m) { int u, v; cin >> u >> v; u--, v--; double dist = sqrt(pow(p[u] - p[v], 2) + pow(q[u] - q[v], 2)); g[u].emplace_back(v, dist); g[v].emplace_back(u, dist); } vector<double> dp(n, 1e18); using T = tuple<double, int>; pqasc<T> que; que.emplace(0, X); while (sz(que)) { double dist; int u; tie(dist, u) = que.top(); que.pop(); if (dp[u] != 1e18) continue; dp[u] = dist; for (auto pa : g[u]) { double d; int v; tie(v, d) = pa; que.emplace(dist + d, v); } } cout << dp[Y] << endl; }