結果
| 問題 |
No.1283 Extra Fee
|
| コンテスト | |
| ユーザー |
stoq
|
| 提出日時 | 2020-12-01 13:30:11 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 359 ms / 2,000 ms |
| コード長 | 4,091 bytes |
| コンパイル時間 | 3,120 ms |
| コンパイル使用メモリ | 211,868 KB |
| 最終ジャッジ日時 | 2025-01-16 11:21:12 |
|
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 |
|---|---|
| other | AC * 30 |
ソースコード
#define MOD_TYPE 1
#pragma region Macros
#include <bits/stdc++.h>
using namespace std;
#if 0
#include <boost/multiprecision/cpp_int.hpp>
#include <boost/multiprecision/cpp_dec_float.hpp>
using Int = boost::multiprecision::cpp_int;
using lld = boost::multiprecision::cpp_dec_float_100;
#endif
#if 1
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#endif
using ll = long long int;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pld = pair<ld, ld>;
template <typename Q_type>
using smaller_queue = priority_queue<Q_type, vector<Q_type>, greater<Q_type>>;
constexpr ll MOD = (MOD_TYPE == 1 ? (ll)(1e9 + 7) : 998244353);
constexpr int INF = (int)1e9 + 10;
constexpr ll LINF = (ll)4e18;
constexpr double PI = acos(-1.0);
constexpr double EPS = 1e-7;
constexpr int Dx[] = {0, 0, -1, 1, -1, 1, -1, 1, 0};
constexpr int Dy[] = {1, -1, 0, 0, -1, -1, 1, 1, 0};
#define REP(i, m, n) for (ll i = m; i < (ll)(n); ++i)
#define rep(i, n) REP(i, 0, n)
#define REPI(i, m, n) for (int i = m; i < (int)(n); ++i)
#define repi(i, n) REPI(i, 0, n)
#define MP make_pair
#define MT make_tuple
#define YES(n) cout << ((n) ? "YES" : "NO") << "\n"
#define Yes(n) cout << ((n) ? "Yes" : "No") << "\n"
#define possible(n) cout << ((n) ? "possible" : "impossible") << "\n"
#define Possible(n) cout << ((n) ? "Possible" : "Impossible") << "\n"
#define all(v) v.begin(), v.end()
#define NP(v) next_permutation(all(v))
#define dbg(x) cerr << #x << ":" << x << "\n";
struct io_init
{
io_init()
{
cin.tie(0);
ios::sync_with_stdio(false);
cout << setprecision(30) << setiosflags(ios::fixed);
};
} io_init;
template <typename T>
inline bool chmin(T &a, T b)
{
if (a > b)
{
a = b;
return true;
}
return false;
}
template <typename T>
inline bool chmax(T &a, T b)
{
if (a < b)
{
a = b;
return true;
}
return false;
}
inline ll CEIL(ll a, ll b)
{
return (a + b - 1) / b;
}
template <typename A, size_t N, typename T>
inline void Fill(A (&array)[N], const T &val)
{
fill((T *)array, (T *)(array + N), val);
}
template <typename T, typename U>
constexpr istream &operator>>(istream &is, pair<T, U> &p) noexcept
{
is >> p.first >> p.second;
return is;
}
template <typename T, typename U>
constexpr ostream &operator<<(ostream &os, pair<T, U> &p) noexcept
{
os << p.first << " " << p.second;
return os;
}
#pragma endregion
template <typename T>
struct dijkstra
{
int V;
T INF_d;
struct edge
{
int to;
T cost;
};
vector<vector<edge>> E;
vector<T> d;
using pt = pair<T, int>;
dijkstra(int V_) : V(V_)
{
E.resize(V);
d.resize(V);
if (is_same<int, T>::value)
INF_d = 2e9;
else
INF_d = 8e18;
}
void add_E(int a, int b, T c = 1, bool directed = true)
{
E[a].emplace_back(edge{b, c});
if (!directed)
E[b].emplace_back(edge{a, c});
}
void calc(int s)
{
priority_queue<pt, vector<pt>, greater<pt>> que;
fill(d.begin(), d.end(), INF_d);
que.emplace(T(0), s);
d[s] = 0;
while (!que.empty())
{
pt p = que.top();
que.pop();
int v = p.second;
if (d[v] < p.first)
continue;
for (auto &&e : E[v])
{
if (d[e.to] > d[v] + e.cost)
{
d[e.to] = d[v] + e.cost;
que.emplace(d[e.to], e.to);
}
}
}
}
};
void solve()
{
int n, m;
cin >> n >> m;
dijkstra<ll> ds(n * n * 2);
ll ex[500][500] = {};
rep(i, m)
{
int h, w;
ll c;
cin >> h >> w >> c;
h--, w--;
ex[h][w] = c;
}
auto f = [&](int i, int j, int t) {
return i * n * 2 + j * 2 + t;
};
rep(i, n) rep(j, n)
{
rep(di, 4)
{
int ii = i + Dx[di], jj = j + Dy[di];
if (ii < 0 or ii >= n or jj < 0 or jj >= n)
continue;
ds.add_E(f(i, j, 0), f(ii, jj, 0), ex[ii][jj] + 1);
ds.add_E(f(i, j, 1), f(ii, jj, 1), ex[ii][jj] + 1);
ds.add_E(f(i, j, 0), f(ii, jj, 1), 1);
}
}
ds.calc(f(0, 0, 0));
cout << ds.d[f(n - 1, n - 1, 1)] << "\n";
}
int main()
{
solve();
}
stoq