Submission #8804831
Source Code Expand
#include <bits/stdc++.h>
#define BIT(n) (1LL << (n))
#define BITF(n, i) (((n) >> i) & 1)
#define REP(i, n) for (int i = 0; i < n; i++)
#define REPB(i, n) for (int i = 0; i < BIT(n); i++)
#define REPS(i, x) for (int i = 1; i <= x; i++)
#define REPR(i, n) for (int i = n; i >= 0; i--)
#define REPZ(i, x) for (int i = 0; i <= x; i++)
#define FOR(i, m, n) for (int i = m; i < n; i++)
#define FORA(i, n) for (auto &&i : n)
#define FORS(i, m, n) for (int i = m; i <= n; i++)
using namespace std;
#define PRINTARR(x, y) \
cerr << #x << "=\n"; \
for (auto itr = x; itr != y; itr++) cerr << *itr << " "; \
cerr << endl;
#define PRINTARR2(x, i0, i1) \
cerr << #x << "=\n"; \
for (int ii0 = 0; ii0 < i0; ii0++) { \
for (int ii1 = 0; ii1 < i1; ii1++) cerr << x[ii0][ii1] << " "; \
cerr << endl; \
}
#define DUMPOUT cerr
// vector
template <typename T> istream &operator>>(istream &is, vector<T> &vec) {
for (T &x : vec) is >> x;
return is;
}
// pair
template <typename T, typename U> ostream &operator<<(ostream &os, pair<T, U> &pair_var) {
os << "(" << pair_var.first << ", " << pair_var.second << ")";
return os;
}
// vector
template <typename T> ostream &operator<<(ostream &os, const vector<T> &vec) {
os << "{";
REP(i, (int)vec.size())
os << vec[i] << (i + 1 == (int)vec.size() ? "" : ", ");
os << "}";
return os;
}
// map
template <typename T, typename U> ostream &operator<<(ostream &os, map<T, U> &map_var) {
os << "{";
FORA(itr, map_var) {
os << *itr;
itr++;
if (itr != map_var.end()) os << ", ";
itr--;
}
os << "}";
return os;
}
// set
template <typename T> ostream &operator<<(ostream &os, set<T> &set_var) {
os << "{";
FORA(itr, set_var) {
os << *itr;
itr++;
if (itr != set_var.end()) os << ", ";
itr--;
}
os << "}";
return os;
}
void dump_func() { DUMPOUT << endl; }
template <class Head, class... Tail> void dump_func(Head &&head, Tail &&... tail) {
DUMPOUT << head;
if (sizeof...(Tail) > 0) DUMPOUT << ", ";
dump_func(std::move(tail)...);
}
#ifdef DEBUG_
#define DEB
#define DUMP(...) \
DUMPOUT << " " << string(#__VA_ARGS__) << ": " \
<< "[" << to_string(__LINE__) << ":" << __FUNCTION__ << "]" << endl \
<< " ", \
dump_func(__VA_ARGS__)
#else
#define DEB if (false)
#define DUMP(...)
#endif
#define ALL(v) v.begin(), v.end()
#define fst first
#define snd second
#define mp make_pair
#define pb push_back
#define epb emplace_back
#define int long long
#define pint pair<int, int>
#define ld long double
using namespace std;
template <class T> bool chmax(T &a, const T &b) {
if (a < b) {
a = b;
return 1;
}
return 0;
}
template <class T> bool chmin(T &a, const T &b) {
if (a > b) {
a = b;
return 1;
}
return 0;
}
template <class T> using vec = std::vector<T>;
template <class T> void print(const T &x) { cout << x << "\n"; }
const int MOD = 1000000007, INF0 = 1061109567, INF = INF0 * INF0;
const double EPS = 1e-10, PI = acos(-1.0);
const int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
#define MAXN 640000
//----//
struct edge {
int from, to;
};
char A[800][800];
// edge G[(640000 * 4)];
int H, W, K, S;
int d[MAXN];
int d2[MAXN];
vector<int> G[MAXN];
bool visited[MAXN];
struct Idcost {
int id, cost;
};
queue<Idcost> q;
void bfs() {
fill(d, d + H * W, INF);
Idcost start = {S, 0};
q.push(start);
while (!q.empty()) {
Idcost now = q.front();
d[now.id] = now.cost;
visited[now.id] = true;
q.pop();
/*if (now.id == T) {
return now.cost;
}*/
for (auto x : G[now.id]) {
Idcost next = {x, now.cost + 1};
if (!visited[x]) {
// DUMP(x, now.cost + 1);
q.push(next);
}
}
}
return;
}
signed main() {
cin.tie(0), ios::sync_with_stdio(false);
cout << fixed << setprecision(10);
cin >> H >> W >> K;
REP(i, H) REP(j, W) {
cin >> A[i][j];
if (A[i][j] == 'S') S = i * W + j;
}
REP(i, H) {
REP(j, W - 1) {
if (A[i][j] != '#' && A[i][j + 1] != '#') {
int addr = i * W + j;
G[addr].pb(addr + 1);
G[addr + 1].pb(addr);
}
}
}
REP(i, W) {
REP(j, H - 1) {
if (A[j][i] != '#' && A[j + 1][i] != '#') {
int addr = j * W + i;
G[addr].pb(addr + W);
G[addr + W].pb(addr);
}
}
}
// DUMP(S);
bfs();
fill(d2, d2 + H * W, INF);
REP(i, H) REP(j, W) {
int val = min({i, H - 1 - i, j, W - 1 - j});
d2[i * W + j] = (val + K - 1) / K;
}
int ans = INF;
REP(i, H) REP(j, W) {
if (d[i * W + j] <= K) chmin(ans, 1 + d2[i * W + j]);
}
print(ans);
// REP(i, H * W) DUMP(i, d[i]);
}
Submission Info
Submission Time |
|
Task |
C - Closed Rooms |
User |
cygnus |
Language |
C++14 (GCC 5.4.1) |
Score |
0 |
Code Size |
5214 Byte |
Status |
TLE |
Exec Time |
2210 ms |
Memory |
1691428 KB |
Judge Result
Set Name |
Sample |
All |
Score / Max Score |
0 / 0 |
0 / 700 |
Status |
|
|
Set Name |
Test Cases |
Sample |
sample1.txt, sample2.txt, sample3.txt |
All |
sample1.txt, sample2.txt, sample3.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in29.txt, in3.txt, in30.txt, in31.txt, in32.txt, in33.txt, in34.txt, in35.txt, in36.txt, in37.txt, in38.txt, in39.txt, in4.txt, in40.txt, in5.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt, sample3.txt |
Case Name |
Status |
Exec Time |
Memory |
in1.txt |
AC |
77 ms |
37760 KB |
in10.txt |
AC |
79 ms |
38176 KB |
in11.txt |
AC |
78 ms |
37632 KB |
in12.txt |
AC |
77 ms |
37760 KB |
in13.txt |
AC |
80 ms |
37760 KB |
in14.txt |
AC |
80 ms |
37760 KB |
in15.txt |
AC |
78 ms |
37632 KB |
in16.txt |
AC |
79 ms |
37632 KB |
in17.txt |
AC |
80 ms |
37760 KB |
in18.txt |
AC |
80 ms |
37632 KB |
in19.txt |
AC |
79 ms |
37760 KB |
in2.txt |
AC |
77 ms |
37760 KB |
in20.txt |
AC |
7 ms |
18688 KB |
in21.txt |
AC |
7 ms |
18048 KB |
in22.txt |
AC |
6 ms |
18048 KB |
in23.txt |
AC |
51 ms |
31616 KB |
in24.txt |
AC |
49 ms |
31616 KB |
in25.txt |
AC |
51 ms |
31616 KB |
in26.txt |
TLE |
2168 ms |
1036628 KB |
in27.txt |
TLE |
2150 ms |
790104 KB |
in28.txt |
TLE |
2165 ms |
1061328 KB |
in29.txt |
TLE |
2157 ms |
902064 KB |
in3.txt |
AC |
81 ms |
37632 KB |
in30.txt |
TLE |
2158 ms |
930200 KB |
in31.txt |
TLE |
2189 ms |
1416408 KB |
in32.txt |
TLE |
2158 ms |
921032 KB |
in33.txt |
TLE |
2205 ms |
1657832 KB |
in34.txt |
TLE |
2207 ms |
1627628 KB |
in35.txt |
TLE |
2210 ms |
1691428 KB |
in36.txt |
AC |
27 ms |
26496 KB |
in37.txt |
AC |
28 ms |
26496 KB |
in38.txt |
AC |
27 ms |
26496 KB |
in39.txt |
TLE |
2201 ms |
1498800 KB |
in4.txt |
AC |
80 ms |
37632 KB |
in40.txt |
TLE |
2199 ms |
1385116 KB |
in5.txt |
AC |
79 ms |
37632 KB |
in6.txt |
AC |
81 ms |
37632 KB |
in7.txt |
AC |
85 ms |
37632 KB |
in8.txt |
AC |
80 ms |
37760 KB |
in9.txt |
AC |
83 ms |
37632 KB |
sample1.txt |
AC |
7 ms |
18048 KB |
sample2.txt |
AC |
6 ms |
18048 KB |
sample3.txt |
AC |
6 ms |
18048 KB |