結果
| 問題 |
No.1638 Robot Maze
|
| コンテスト | |
| ユーザー |
Kude
|
| 提出日時 | 2021-08-06 21:38:17 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 5 ms / 2,000 ms |
| コード長 | 2,491 bytes |
| コンパイル時間 | 3,911 ms |
| コンパイル使用メモリ | 261,936 KB |
| 最終ジャッジ日時 | 2025-01-23 14:49:36 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 49 |
ソースコード
#include<bits/stdc++.h>
#include<atcoder/all>
using namespace std;
using namespace atcoder;
#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 all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
template<class T> void chmax(T& a, const T& b) {a = max(a, b);}
template<class T> void chmin(T& a, const T& b) {a = min(a, b);}
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;
template<class T>
std::vector<unsigned long long> dijkstra(std::vector<std::vector<std::pair<int,T>>>& to, int s=0) {
const unsigned long long INF = 1002003004005006007;
struct QueElem {
int v;
unsigned long long c;
bool operator<(const QueElem a) const {return c > a.c;}
QueElem(int v, unsigned long long c): v(v), c(c) {}
};
std::priority_queue<QueElem> q;
std::vector<unsigned long long> dist(to.size(), INF);
dist[s] = 0;
q.emplace(s, 0);
while(!q.empty()) {
QueElem qe = q.top(); q.pop();
int u = qe.v;
unsigned long long c = qe.c;
if (c > dist[u]) continue;
for(auto vc: to[u]) {
int v = vc.first;
unsigned long long nc = c + vc.second;
if (nc < dist[v]) {
dist[v] = nc;
q.emplace(v, nc);
}
}
}
return dist;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int h, w;
cin >> h >> w;
int u, d, r, l, p;
ll k;
cin >> u >> d >> r >> l >> k >> p;
int xs, ys, xt, yt;
cin >> xs >> ys >> xt >> yt;
xs--, ys--, xt--, yt--;
vector<string> s(h);
rep(i, h) cin >> s[i];
vector<vector<P>> to(h * w);
rep(i1, h - 1) rep(j, w) {
int i2 = i1 + 1;
if (s[i1][j] == '#' || s[i2][j] == '#') continue;
int p1 = i1 * w + j, p2 = i2 * w + j;
to[p1].emplace_back(p2, d + (s[i2][j] == '@' ? p : 0));
to[p2].emplace_back(p1, u + (s[i1][j] == '@' ? p : 0));
}
rep(i, h) rep(j1, w - 1) {
int j2 = j1 + 1;
if (s[i][j1] == '#' || s[i][j2] == '#') continue;
int p1 = i * w + j1, p2 = i * w + j2;
to[p1].emplace_back(p2, r + (s[i][j2] == '@' ? p : 0));
to[p2].emplace_back(p1, l + (s[i][j1] == '@' ? p : 0));
}
auto dist = dijkstra(to, xs * w + ys);
cout << (dist[xt * w + yt] <= k ? "Yes" : "No") << '\n';
}
Kude