結果
| 問題 |
No.340 雪の足跡
|
| コンテスト | |
| ユーザー |
kei
|
| 提出日時 | 2018-10-26 16:35:36 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 3,465 bytes |
| コンパイル時間 | 2,178 ms |
| コンパイル使用メモリ | 181,300 KB |
| 実行使用メモリ | 1,015,432 KB |
| 最終ジャッジ日時 | 2024-11-19 06:20:13 |
| 合計ジャッジ時間 | 37,707 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 |
|---|---|
| sample | AC * 2 MLE * 3 |
| other | AC * 19 TLE * 12 MLE * 1 |
ソースコード
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int INF = 1e9;
const ll LINF = 1e18;
inline ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; }
inline ll lcm(ll a, ll b) { return a / gcd(a, b)*b; }
template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; }
template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; }
template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; }
template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; }
/*
<url:https://yukicoder.me/problems/no/340>
問題文============================================================
=================================================================
解説=============================================================
================================================================
*/
int dx[4] = {1,0,-1,0};
int dy[4] = {0,1,0,-1};
int coord2idx(const pii& coor,const int H,const int W){
return coor.first*W + coor.second;
}
pii idx2coord(const int idx,const int H,const int W){
return make_pair(idx/W, idx%W);
}
vector<int> G[1000010];
int dist[1000010];
string solve(){
string res;
int W,H,N; cin >> W >> H >> N;
for(int _ = 0; _ < N; _++){
int M; cin >> M;
vector<int> B(M+1);
for(auto& in:B) cin >> in;
for(int i = 0; i < M; i++){
int S = B[i],T = B[i+1];
pii sc = idx2coord(S, H, W),tc = idx2coord(T, H, W);
int d = -1;
if(sc.first == tc.first){ // 縦方向移動
if(sc.second < tc.second){ // 下方向
d = 1;
}else{
d = 3;
}
}
if(sc.second == tc.second){ // 横方向移動
if(sc.first < tc.first){
d = 0;
}else{
d = 2;
}
}
int now = S;
pii n = sc;
while(now != T){
n = make_pair(n.first + dx[d], n.second + dy[d]);
int next = coord2idx(n, H, W);
G[now].push_back(next);
G[next].push_back(now);
now = next;
}
}
}
for(int i = 0; i < H*W; i++){
sort(G[i].begin(),G[i].end());
G[i].erase(unique(G[i].begin(),G[i].end()),G[i].end());
}
fill(dist,dist+1000010,INF);
dist[0] = 0;
queue<int> q; q.push(0);
while(q.size()){
int n = q.front(); q.pop();
for(auto next:G[n]){
if(dist[next] > dist[n] + 1){
dist[next] = dist[n] + 1;
q.push(next);
}
}
}
if(dist[H*W-1] == INF) return "Odekakedekinai..";
res = to_string(dist[H*W-1]);
return res;
}
int main(void) {
cin.tie(0); ios_base::sync_with_stdio(false);
cout << solve() << endl;
return 0;
}
kei