結果
| 問題 |
No.1283 Extra Fee
|
| コンテスト | |
| ユーザー |
rokahikou1
|
| 提出日時 | 2020-11-21 12:24:30 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 423 ms / 2,000 ms |
| コード長 | 2,138 bytes |
| コンパイル時間 | 1,844 ms |
| コンパイル使用メモリ | 183,148 KB |
| 実行使用メモリ | 22,152 KB |
| 最終ジャッジ日時 | 2024-11-16 07:13:43 |
| 合計ジャッジ時間 | 8,146 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 30 |
コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:47:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
47 | auto [cost, pp] = que.top();
| ^
main.cpp:49:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
49 | auto [p, skipped] = pp;
| ^
main.cpp:50:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
50 | auto [x, y] = p;
| ^
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int(i) = 0; (i) < (n); (i)++)
#define FOR(i, m, n) for(int(i) = (m); (i) < (n); (i)++)
#define All(v) (v).begin(), (v).end()
#define pb push_back
#define MP(a, b) make_pair((a), (b))
template <class T> vector<T> make_vec(size_t a, T val) {
return vector<T>(a, val);
}
template <class... Ts> auto make_vec(size_t a, Ts... ts) {
return vector<decltype(make_vec(ts...))>(a, make_vec(ts...));
}
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using Graph = vector<vector<int>>;
template <typename T> struct edge {
int to;
T cost;
edge(int t, T c) : to(t), cost(c) {}
};
template <typename T> using WGraph = vector<vector<edge<T>>>;
const int INF = 1 << 30;
const ll LINF = 1LL << 60;
const int MOD = 1e9 + 7;
const int dx[] = {0, -1, 0, 1};
const int dy[] = {1, 0, -1, 0};
int main() {
int N, M;
cin >> N >> M;
auto dist = make_vec(N, N, 2, LINF);
auto check = make_vec(N, N, 0LL);
rep(i, M) {
ll h, w, c;
cin >> h >> w >> c;
h--, w--;
check[h][w] = c;
}
using State = pair<ll, pair<pii, int>>;
priority_queue<State, vector<State>, greater<State>> que;
que.push({0LL, {{0, 0}, 0}});
dist[0][0][0] = 0;
while(!que.empty()) {
auto [cost, pp] = que.top();
que.pop();
auto [p, skipped] = pp;
auto [x, y] = p;
rep(i, 4) {
int nx = x + dx[i], ny = y + dy[i];
if(nx < 0 || nx >= N || ny < 0 || ny >= N)
continue;
if(skipped == 0) {
if(check[ny][nx] && (dist[ny][nx][0] > cost + 1)) {
dist[ny][nx][1] = cost + 1 + check[ny][nx];
que.push({cost + 1, {{nx, ny}, 1}});
}
}
if(dist[ny][nx][skipped] > cost + 1 + check[ny][nx]) {
dist[ny][nx][skipped] = cost + 1 + check[ny][nx];
que.push({cost + 1 + check[ny][nx], {{nx, ny}, skipped}});
}
}
}
cout << min(dist[N - 1][N - 1][1], dist[N - 1][N - 1][0]) << endl;
}
rokahikou1