結果
| 問題 |
No.2328 Build Walls
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2023-05-28 15:16:56 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 3,160 bytes |
| コンパイル時間 | 2,481 ms |
| コンパイル使用メモリ | 181,964 KB |
| 実行使用メモリ | 13,924 KB |
| 最終ジャッジ日時 | 2024-12-27 05:45:16 |
| 合計ジャッジ時間 | 57,864 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 21 TLE * 13 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
constexpr int MOD = 998244353;
constexpr int MD = 1000000007;
constexpr int INF = INT_MAX;
constexpr long long LINF = LLONG_MAX;
#define REP(i, n) for (int i = 0; i < (int)(n); i++)
using ll = long long;using vi = vector<int>;using vll = vector<ll>;
template <class T>
using ps = pair<T, T>;
template <class T>
using vec = vector<T>;
template <class T>
using pqg = priority_queue<T, vector<T>, greater<T>>; // ascendent
template <typename T>
int sz(const T& x) { return x.size(); }
// a = min(a,b)
template <typename T, typename S>
inline bool chmin(T& a, const S& b) {
return (a > b ? a = b, 1 : 0);
}
template <typename T, typename S>
inline bool chmax(T& a, const S& b) {
return (a < b ? a = b, 1 : 0);
}
ll mpow(int base, int exponent, int mod){
if(exponent == 0) return 1;
ll c = mpow(base, exponent/2, mod);
c *= c;
c %= mod;
if(exponent % 2 == 1){
c *= base;
c %= mod;
}
return c;
}
/*
auto push = [&](int r, int c){
if(r < 0 || c < 0 || r >= h || c >= w) return;
if(dist[r][c] != -1) return;
};
*/ //dfs/bfs埋め込み用
/*
class edge{
public:
int to, weight;
edge(int a, int b){
to = a; weight = b;
}
};
*/ //template of edge
/*class edge2{
public:
int from, to, weight;
edge2(int w, int a, int b){
from = w; to = a; weight = b;
}
};
bool comp(edge2 a, edge2 b){
return a.weight < b.weight;
}
*/ //template of edge2
struct before_main_function {
before_main_function() {
std::cin.tie(0);
ios::sync_with_stdio(false);
std::cout << setprecision(20) << fixed;
#define endl "\n"
}
} before_main_function;
vec<int > d, l;
vec<vec<int>> g;
void dfs(int p){
for(auto it : g[p]){
d[it] = max(d[p], l[it]);
dfs(it);
}
}
int main(int /*argc*/, char** /*argv*/){
int h, w;
std::cin >> h >> w;
vec<vec<int>> a(h, vec<int>(w, -1));
REP(i, h-1){
REP(j, w){
std::cin >> a[i+1][j];
}
}
ll ans = INF;
const vec<vec<int>> dir = {{0, 1}, {0, -1}, {1, 1}, {1, -1}, {1, 0}, {-1, 0}, {-1, 1}, {-1, -1}};
for(int i = 1; i < h-1; i++){
if(a[i][0] == -1) continue;
//dijkstra 目的地は a[なんとか][w-1]
pqg<pair<ll, pair<int, int>>> pq;
pq.emplace(a[i][0], make_pair(i, 0));
vec<vec<int>> d(h, vec<int>(w, INF));
while(!pq.empty()){
auto it = pq.top(); pq.pop();
const pair<int, int> from = it.second;
if(d[from.first][from.second] < it.first) continue;
for(auto nd : dir){
if(nd[0]+from.first < 0 || nd[0]+from.first >= h) continue;
if(nd[1]+from.second < 0 || nd[1]+from.second >= w) continue;
if(a[nd[0]+from.first][nd[1]+from.second] == -1) continue;
const ll c = it.first+a[nd[0]+from.first][nd[1]+from.second];
if(c < d[nd[0]+from.first][nd[1]+from.second]){
d[nd[0]+from.first][nd[1]+from.second] = c;
pq.emplace(c, make_pair(nd[0]+from.first, nd[1]+from.second));
}
}
}
for(int i = 1; i < h-1; i++){
chmin(ans, d[i][w-1]);
}
}
if(ans == INF) cout << "-1\n";
else std::cout << ans << endl;
return 0;
}