結果
問題 | No.402 最も海から遠い場所 |
ユーザー |
|
提出日時 | 2024-11-11 22:01:24 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,422 bytes |
コンパイル時間 | 3,485 ms |
コンパイル使用メモリ | 193,680 KB |
実行使用メモリ | 85,784 KB |
最終ジャッジ日時 | 2024-11-11 22:01:31 |
合計ジャッジ時間 | 6,579 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 WA * 1 |
other | AC * 9 WA * 10 |
ソースコード
#include<bits/stdc++.h>#include<ext/pb_ds/assoc_container.hpp>#include<ext/pb_ds/hash_policy.hpp>#define Add(x, y) (x + y >= mod) ? (x + y - mod) : (x + y)#define lowbit(x) x & (-x)#define pi pair<ll, ll>#define pii pair<ll, pair<ll, ll>>#define iip pair<pair<ll, ll>, ll>#define ppii pair<pair<ll, ll>, pair<ll, ll>>#define ls(k) k << 1#define rs(k) k << 1 | 1#define fi first#define se second#define full(l, r, x) for(auto it = l; it != r; ++it) (*it) = x#define Full(a) memset(a, 0, sizeof(a))#define open(s1, s2) freopen(s1, "r", stdin), freopen(s2, "w", stdout);#define For(i, l, r) for(register int i = l; i <= r; ++i)#define _For(i, l, r) for(register int i = r; i >= l; --i)#define chmax(a, b) a = max(a, b)#define chmin(a, b) a = min(a, b)using namespace std;using namespace __gnu_pbds;typedef double db;typedef unsigned long long ull;typedef long long ll;bool Begin;const int N = 3030;inline ll read(){ll x = 0, f = 1;char c = getchar();while(c < '0' || c > '9'){if(c == '-')f = -1;c = getchar();}while(c >= '0' && c <= '9'){x = (x << 1) + (x << 3) + (c ^ 48);c = getchar();}return x * f;}inline void write(ll x){if(x < 0){putchar('-');x = -x;}if(x > 9)write(x / 10);putchar(x % 10 + '0');}inline char get(){char c;while(1){c = getchar();if(c == '.' || c == '#')break;}return c;}int n, m, ans;bool f[N][N];queue<pair<int ,int>> q, Q;int dx[] = {0, 0, 1, -1}, dy[] = {1, -1, 0, 0};inline void bfs(){while(!q.empty()){swap(q, Q);while(!Q.empty()){int x = Q.front().fi, y = Q.front().se;// cerr << x << ' ' << y << '\n';Q.pop();for(int i = 0; i < 4; ++i){int zx = x + dx[i], zy = y + dy[i];if(zx < 0 || zx > n + 1 || zy < 0 || zy > m + 1)continue;if(!f[zx][zy]){f[zx][zy] = 1;q.push({zx, zy});}}}++ans;}}bool End;int main(){n = read(), m = read();for(int i = 1; i <= n; ++i){for(int j = 1; j <= m; ++j){if(get() == '.'){q.push({i, j});f[i][j] = 1;}}}for(int i = 0; i <= m + 1; ++i){q.push({0, i});q.push({n + 1, i});f[0][i] = f[n + 1][i] = 1;}for(int i = 1; i <= n; ++i){q.push({i, 0});q.push({i, m + 1});f[i][0] = f[i][m + 1] = 1;}bfs();write(ans - 1);cerr << '\n' << abs(&Begin - &End) / 1048576 << "MB";return 0;}