oj.uz

Submission #209938

# Submission time Handle Problem Language Result Execution time Memory
209938 2020-03-16T02:43:23 Z EntityIT Sandwich (JOI16_sandwich) C++14
100 / 100
 2703 ms 8440 KB 
#include<bits/stdc++.h>

using namespace std;

#define all(x) (x).begin(), (x).end()
#define sz(x) ( (int)(x).size() )
using LL = long long;

template<class T>
inline bool asMn(T &a, const T &b) { return a > b ? a = b, true : false; }
template<class T>
inline bool asMx(T &a, const T &b) { return a < b ? a = b, true : false; }

const int inf = 1e9;
mt19937 rng( (uint32_t)chrono::steady_clock::now().time_since_epoch().count() );

int n, m;
vector<vector<int> > a;

bool valid(int x, int y) { return x >= 0 && x < n && y >= 0 && y < m; }

array<int, 4> dx{ -1, 0, 1, 0 }, dy{ 0, -1, 0, 1 };
vector<vector<int> > f;
int F(int x, int y, int dir) {
  if (!valid(x, y) ) return 0;

  if (dir & 1) dir ^= a[x][y];

  if (~f[x][y]) return f[x][y] ^ inf ? 0 : inf;
  f[x][y] = inf;

  int tmp1 = F(x + dx[dir], y + dy[dir], dir),
      tmp2 = F(x + dx[dir ^ a[x][y] ], y + dy[dir ^ a[x][y] ], dir ^ a[x][y]);
  if (tmp1 ^ inf && tmp2 ^ inf) f[x][y] = 2 + tmp1 + tmp2;

  return f[x][y];
}

int main() {
  ios_base::sync_with_stdio(0); cin.tie(0);

  #ifdef FourLeafClover
  freopen("input", "r", stdin);
  #endif // FourLeafCLover

  cin >> n >> m;
  a.assign(n, vector<int>(m) );
  for (int i = 0; i < n; ++i) {
    for (int j = 0; j < m; ++j) {
      char c; cin >> c;
      a[i][j] = c == 'N' ? 3 : 1;
    }
  }

  vector<vector<int> > ans(n, vector<int>(m, inf) );
  for (int j = 0; j < m; ++j) {
    for (const auto &dir : array<int, 2>{ 0, 2 }) {
      int sum = 0;
      f.assign(n, vector<int>(m, -1) );
      if (!dir) {
        for (int i = 0; i < n; ++i) {
          int tmp = F(i, j, dir);
          if (tmp == inf) break ;
          sum += tmp;
          asMn(ans[i][j], sum);
        }
      }
      else {
        for (int i = n - 1; ~i; --i) {
          int tmp = F(i, j, dir);
          if (tmp == inf) break ;
          sum += tmp;
          asMn(ans[i][j], sum);
        }
      }
    }
  }

  for (const auto &i : ans) {
    for (const auto &j : i) cout << (j ^ inf ? j : -1) << ' ';
    cout << '\n';
  }

  return 0;
}

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 9 ms 504 KB Output is correct
7 Correct 9 ms 376 KB Output is correct
8 Correct 9 ms 376 KB Output is correct
9 Correct 7 ms 376 KB Output is correct
10 Correct 9 ms 376 KB Output is correct
11 Correct 9 ms 376 KB Output is correct
12 Correct 7 ms 376 KB Output is correct
13 Correct 9 ms 376 KB Output is correct
14 Correct 9 ms 376 KB Output is correct
15 Correct 8 ms 376 KB Output is correct
16 Correct 7 ms 376 KB Output is correct
17 Correct 7 ms 376 KB Output is correct
18 Correct 7 ms 376 KB Output is correct
19 Correct 9 ms 376 KB Output is correct
20 Correct 8 ms 376 KB Output is correct
21 Correct 7 ms 376 KB Output is correct
22 Correct 7 ms 376 KB Output is correct
23 Correct 8 ms 376 KB Output is correct
24 Correct 9 ms 376 KB Output is correct
25 Correct 10 ms 380 KB Output is correct
26 Correct 9 ms 504 KB Output is correct
27 Correct 10 ms 376 KB Output is correct
28 Correct 10 ms 376 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 9 ms 504 KB Output is correct
7 Correct 9 ms 376 KB Output is correct
8 Correct 9 ms 376 KB Output is correct
9 Correct 7 ms 376 KB Output is correct
10 Correct 9 ms 376 KB Output is correct
11 Correct 9 ms 376 KB Output is correct
12 Correct 7 ms 376 KB Output is correct
13 Correct 9 ms 376 KB Output is correct
14 Correct 9 ms 376 KB Output is correct
15 Correct 8 ms 376 KB Output is correct
16 Correct 7 ms 376 KB Output is correct
17 Correct 7 ms 376 KB Output is correct
18 Correct 7 ms 376 KB Output is correct
19 Correct 9 ms 376 KB Output is correct
20 Correct 8 ms 376 KB Output is correct
21 Correct 7 ms 376 KB Output is correct
22 Correct 7 ms 376 KB Output is correct
23 Correct 8 ms 376 KB Output is correct
24 Correct 9 ms 376 KB Output is correct
25 Correct 10 ms 380 KB Output is correct
26 Correct 9 ms 504 KB Output is correct
27 Correct 10 ms 376 KB Output is correct
28 Correct 10 ms 376 KB Output is correct
29 Correct 9 ms 376 KB Output is correct
30 Correct 5 ms 376 KB Output is correct
31 Correct 2503 ms 8056 KB Output is correct
32 Correct 2522 ms 7864 KB Output is correct
33 Correct 193 ms 2424 KB Output is correct
34 Correct 1508 ms 3320 KB Output is correct
35 Correct 1312 ms 2684 KB Output is correct
36 Correct 6 ms 504 KB Output is correct
37 Correct 1845 ms 3448 KB Output is correct
38 Correct 1768 ms 3448 KB Output is correct
39 Correct 1756 ms 3320 KB Output is correct
40 Correct 2256 ms 3592 KB Output is correct
41 Correct 1568 ms 2412 KB Output is correct
42 Correct 2017 ms 4000 KB Output is correct
43 Correct 1935 ms 3832 KB Output is correct
44 Correct 1921 ms 3836 KB Output is correct
45 Correct 1487 ms 3448 KB Output is correct
46 Correct 1029 ms 3452 KB Output is correct
47 Correct 1164 ms 3280 KB Output is correct
48 Correct 673 ms 2684 KB Output is correct
49 Correct 999 ms 3392 KB Output is correct
50 Correct 1164 ms 3376 KB Output is correct
51 Correct 1022 ms 3320 KB Output is correct
52 Correct 1069 ms 3320 KB Output is correct
53 Correct 1010 ms 3320 KB Output is correct
54 Correct 973 ms 3324 KB Output is correct
55 Correct 1022 ms 3320 KB Output is correct
56 Correct 1050 ms 3448 KB Output is correct
57 Correct 714 ms 2808 KB Output is correct
58 Correct 2096 ms 4344 KB Output is correct
59 Correct 2126 ms 4168 KB Output is correct
60 Correct 1459 ms 3444 KB Output is correct
61 Correct 2258 ms 8440 KB Output is correct
62 Correct 2632 ms 3448 KB Output is correct
63 Correct 2703 ms 3576 KB Output is correct