結果
問題 |
No.340 雪の足跡
|
ユーザー |
![]() |
提出日時 | 2016-03-30 00:09:54 |
言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 2,268 bytes |
コンパイル時間 | 861 ms |
コンパイル使用メモリ | 85,592 KB |
実行使用メモリ | 54,400 KB |
最終ジャッジ日時 | 2024-10-02 01:11:00 |
合計ジャッジ時間 | 20,750 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 22 TLE * 9 -- * 1 |
ソースコード
#include <iostream> #include <vector> #include <map> #include <algorithm> #include <limits.h> #include <time.h> #include <string> #include <string.h> #include <sstream> #include <set> #include <cstdio> #include <cstdlib> #include <cmath> #include <stack> #include <queue> using namespace std; typedef long long ll; const int MAX_H = 1000; const int MAX_W = 1000; const int DY[4] = {-1, 0, 0, 1}; const int DX[4] = { 0,-1, 1, 0}; struct Coord { int y; int x; int dist; Coord(int y, int x, int dist){ this->y = y; this->x = x; this->dist = dist; } }; bool field[MAX_H][MAX_W][4]; int w, h, n; void walk(int from, int to){ int fromY = from/w; int fromX = from%w; int toY = to/w; int toX = to%w; if(fromY < toY){ for(int y = fromY+1; y <= toY; y++){ field[y-1][fromX][3] = true; field[y][toX][0] = true; } }else if(fromX < toX){ for(int x = fromX+1; x <= toX; x++){ field[fromY][x-1][2] = true; field[toY][x][1] = true; } }else if(fromY > toY){ for(int y = toY+1; y <= fromY; y++){ field[y][fromX][0] = true; field[y-1][toX][3] = true; } }else{ for(int x = toX+1; x <= fromX; x++){ field[fromY][x][1] = true; field[toY][x-1][2] = true; } } } int main(){ memset(field, false, sizeof(field)); cin >> w >> h >> n; for(int i = 0; i < n; i++){ int m; cin >> m; int bp = 0; int p = 0; for(int j = 0; j < m+1; j++){ bp = p; cin >> p; if(j > 0){ walk(bp, p); } } } queue<Coord> que; que.push(Coord(0, 0, 0)); int minDist = INT_MAX; map<int, bool> checkList; while(!que.empty()){ Coord coord = que.front(); que.pop(); int z = coord.y * w + coord.x; if(checkList[z]) continue; checkList[z] = true; if(h*w-1 == z){ minDist = min(minDist, coord.dist); } for(int i = 0; i < 4; i++){ int ny = coord.y + DY[i]; int nx = coord.x + DX[i]; if(ny < 0 || h <= ny || nx < 0 || w <= nx) continue; if(field[coord.y][coord.x][i]){ que.push(Coord(ny, nx, coord.dist+1)); } } } if (minDist == INT_MAX){ cout << "Odekakedekinai.." << endl; }else{ cout << minDist << endl; } return 0; }