結果
| 問題 |
No.402 最も海から遠い場所
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2016-11-21 21:23:08 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,381 bytes |
| コンパイル時間 | 920 ms |
| コンパイル使用メモリ | 88,708 KB |
| 実行使用メモリ | 113,360 KB |
| 最終ジャッジ日時 | 2024-11-27 09:33:59 |
| 合計ジャッジ時間 | 5,739 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 15 WA * 4 |
ソースコード
#include <sstream>
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <vector>
#include <algorithm>
#include <queue>
template<typename T1, typename T2>inline std::ostream& operator << (std::ostream& os, const std::pair<T1, T2>& p) { return os << "(" << p.first << ", " << p.second << ")"; }
template<typename T>inline std::ostream &operator<<(std::ostream &os, const std::vector<T>& v) { bool first = true; os << "["; for (unsigned int i = 0; i < v.size(); i++) { if (!first)os << ", "; os << v[i]; first = false; }return os << "]"; }
inline std::ostream &operator<<(std::ostream &os, const std::vector<std::string>& v) { bool first = true; os << "["; for (unsigned int i = 0; i < v.size(); i++) { if (!first)os << ", "; os << "'" << v[i] << "'"; first = false; }return os << "]"; }
template<typename T, typename T2>void printarray(T a[], T2 sz, T2 beg = 0) { for (T2 i = beg; i < sz; ++i) std::cout << a[i] << " "; std::cout << std::endl; }
template<typename T, typename T2>void printMatrix(T mat, T2 h, T2 w)
{
for(T2 i = 0; i < h; ++i)
{
bool first = true;
for(int j = 0; j < w; ++j)
{
if (!first) std::cout << " ";
std::cout << mat[i][j];
first = false;
}
std::cout << "\n";
}
std::cout << "\n";
}
using namespace std;
int dx[] = { -1, -1, 0 };
int dy[] = { 0, -1, -1 };
const int dx4[] = { -1 , -1 , 1 , 1 };
const int dy4[] = { -1 , 1 , -1 , 1 };
const int dx8[] = { -1, 0, 1, 0 , -1 , -1 , 1 , 1 };
const int dy8[] = { 0, 1, 0, -1 , -1 , 1 , -1 , 1 };
int main()
{
int H, W;
cin >> H >> W;
queue<pair<int, int> > que;
string line;
int answer = 0;
vector<vector<int> > cnt(H, vector<int>(W, -1));
vector<vector<bool> > vis(H, vector<bool>(W, false));
//insert the outer points
#if 0
for (int i = -1; i <= W; ++i)
{
que.push({ -1, i });
que.push({ H, i });
}
for (int i = -1; i <= H; ++i)
{
que.push({ i, -1 });
que.push({ i, W });
}
#endif
for (int i = 0; i < H; ++i)
{
cin >> line;
for (int j = 0; j < W; ++j)
{
if (line[j] == '.')
{
cnt[i][j] = 0;
vis[i][j] = true;
que.push({ i, j });
}
else
{
cnt[i][j] = 1;
if (i == 0 || i == H - 1 || j == 0 || j == W - 1)
{
vis[i][j] = true;
que.push({ i,j });
}
}
}
}
while (!que.empty())
{
auto point = que.front();
que.pop();
for (int i = 0; i < 8; ++i)
{
int x = point.first + dx8[i];
int y = point.second + dy8[i];
if (x < 0 || x >= H || y < 0 || y >= W) continue;
int value = 0;
if (point.first >= 0 && point.first < H && point.second >= 0 && point.second < W)
value = cnt[point.first][point.second];
if (vis[x][y] == false)
{
cnt[x][y] = value + 1;
vis[x][y] = true;
que.push({ x, y });
answer = max(answer, cnt[x][y]);
}
}
}
//printMatrix(cnt, H, W);
cout << max(1, answer) << endl;
return 0;
}