oj.uz

Submission #570590

# Submission time Handle Problem Language Result Execution time Memory
570590 2022-05-30T14:58:00 Z iancu Abduction 2 (JOI17_abduction2) C++14
44 / 100
 5000 ms 23272 KB 
#include <bits/stdc++.h>

#define NORTH 0
#define SOUTH 1
#define EAST  2
#define WEST  3

using namespace std;

const int N = 5e4 + 5;

struct Node {
  int x, y;
  int val;
  int dir;
  long long dist;

  bool operator<(const Node& n) const {
    if (val != n.val)
      return val > n.val;
    return make_tuple(x, y, dir) < make_tuple(n.x, n.y, n.dir);
  }
};

int h, w;
int a[N], b[N];

long long solve(int x, int y, int dir) {
  map<Node, pair<int, int>> nxt;
  map<pair<int, int>, long long> dp;
  int hl, hr, wl, wr;
  long long ans = 0;
  hl = hr = x;
  wl = wr = y;
  if (dir == 0) hl = max(hl - 1, 1);
  else if (dir == 1) hr = min(hr + 1, h);
  else if (dir == 2) wr = min(wr + 1, w);
  else wl = max(wl - 1, 1);
  priority_queue<Node> pq;
  pq.push({x, y, 0, dir, 0});
  while (!pq.empty()) {
    auto n = pq.top();
    //cout << n.x << " " << n.y << " " << n.dir << " " << n.dist << endl;
    pq.pop();
    ans = max(ans, n.dist);

    if (n.dir == NORTH && n.x == 1)
      continue;
    if (n.dir == SOUTH && n.x == h)
      continue;
    if (n.dir == EAST  && n.y == w)
      continue;
    if (n.dir == WEST  && n.y == 1)
      continue;

    if (n.dir == NORTH) {
      if (nxt.find(n) != nxt.end()) {
      } else {
          while (hl > 1 && a[hl] <= b[n.y])
            --hl;
          if (a[hl] <= b[n.y]) {
            ans = max(ans, n.dist + n.x - hl);
            continue;
          }
          nxt[n] = {hl, n.y};
      }
      if (dp[nxt[n]] >= n.dist + n.x - nxt[n].first)
        continue;
      dp[nxt[n]] = n.dist + n.x - nxt[n].first;
      pq.push({nxt[n].first, nxt[n].second, a[nxt[n].first], WEST, n.dist + n.x - nxt[n].first});
      pq.push({nxt[n].first, nxt[n].second, a[nxt[n].first], EAST, n.dist + n.x - nxt[n].first});
    } else if (n.dir == SOUTH) {
      if (nxt.find(n) == nxt.end()) {
        while (hr < h && a[hr] <= b[n.y])
          ++hr;
        if (a[hr] <= b[n.y]) {
          ans = max(ans, n.dist + hr - n.x);
          continue;
        }
        nxt[n] = {hr, n.y};
      }
      if (dp[nxt[n]] >= n.dist + nxt[n].first - n.x)
        continue;
      dp[nxt[n]] = n.dist + nxt[n].first - n.x;
      pq.push({nxt[n].first, nxt[n].second, a[nxt[n].first], WEST, n.dist + nxt[n].first - n.x});
      pq.push({nxt[n].first, nxt[n].second, a[nxt[n].first], EAST, n.dist + nxt[n].first - n.x});
    } else if (n.dir == EAST) {
      if (nxt.find(n) == nxt.end()) {
        while (wr < w && b[wr] <= a[n.x])
          ++wr;
        if (b[wr] <= a[n.x]) {
          ans = max(ans, n.dist + wr - n.y);
          continue;
        }
        nxt[n] = {n.x, wr};
      }
      if (dp[nxt[n]] >= n.dist + nxt[n].second - n.y)
        continue;
      dp[nxt[n]] = n.dist + nxt[n].second - n.y;
      pq.push({nxt[n].first, nxt[n].second, b[nxt[n].second], NORTH, n.dist + nxt[n].second - n.y});
      pq.push({nxt[n].first, nxt[n].second, b[nxt[n].second], SOUTH, n.dist + nxt[n].second - n.y});
    } else {
      if (nxt.find(n) == nxt.end()) {
        while (wl > 1 && b[wl] <= a[n.x])
          --wl;
        if (b[wl] <= a[n.x]) {
          ans = max(ans, n.dist + n.y - wl);
          continue;
        }
        nxt[n] = {n.x, wl};
      }
      if (dp[nxt[n]] >= n.dist + n.y - nxt[n].second)
        continue;
      dp[nxt[n]] = n.dist + n.y - nxt[n].second;
      pq.push({nxt[n].first, nxt[n].second, b[nxt[n].second], NORTH, n.dist + n.y - nxt[n].second});
      pq.push({nxt[n].first, nxt[n].second, b[nxt[n].second], SOUTH, n.dist + n.y - nxt[n].second});
    }
  }
  return ans;
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr), cout.tie(nullptr);
  int q;
  cin >> h >> w >> q;
  for (int i = 1; i <= h; ++i)
    cin >> a[i];
  for (int i = 1; i <= w; ++i)
    cin >> b[i];
  while (q--) {
    int x, y;
    cin >> x >> y;
    long long ans = 0;
    for (int i = 0; i < 4; ++i)
      ans = max(ans, solve(x, y, i));
    cout << ans << "\n";
  }
  return 0;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 328 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 27 ms 908 KB Output is correct
20 Correct 49 ms 1348 KB Output is correct
21 Correct 35 ms 1008 KB Output is correct
22 Correct 97 ms 1616 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 328 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 27 ms 908 KB Output is correct
20 Correct 49 ms 1348 KB Output is correct
21 Correct 35 ms 1008 KB Output is correct
22 Correct 97 ms 1616 KB Output is correct
23 Correct 13 ms 1640 KB Output is correct
24 Correct 11 ms 1620 KB Output is correct
25 Correct 11 ms 1620 KB Output is correct
26 Correct 11 ms 1620 KB Output is correct
27 Correct 11 ms 1620 KB Output is correct
28 Correct 221 ms 6324 KB Output is correct
29 Correct 27 ms 2340 KB Output is correct
30 Correct 1409 ms 18384 KB Output is correct
31 Correct 1936 ms 23272 KB Output is correct
32 Correct 62 ms 2576 KB Output is correct
33 Correct 513 ms 6696 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 340 KB Output is correct
2 Correct 13 ms 340 KB Output is correct
3 Correct 14 ms 360 KB Output is correct
4 Correct 16 ms 360 KB Output is correct
5 Correct 14 ms 340 KB Output is correct
6 Correct 180 ms 468 KB Output is correct
7 Correct 155 ms 588 KB Output is correct
8 Correct 1928 ms 1756 KB Output is correct
9 Correct 2087 ms 1800 KB Output is correct
10 Correct 2275 ms 1596 KB Output is correct
11 Correct 3849 ms 2008 KB Output is correct

Subtask #5
0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 328 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 27 ms 908 KB Output is correct
20 Correct 49 ms 1348 KB Output is correct
21 Correct 35 ms 1008 KB Output is correct
22 Correct 97 ms 1616 KB Output is correct
23 Correct 13 ms 1640 KB Output is correct
24 Correct 11 ms 1620 KB Output is correct
25 Correct 11 ms 1620 KB Output is correct
26 Correct 11 ms 1620 KB Output is correct
27 Correct 11 ms 1620 KB Output is correct
28 Correct 221 ms 6324 KB Output is correct
29 Correct 27 ms 2340 KB Output is correct
30 Correct 1409 ms 18384 KB Output is correct
31 Correct 1936 ms 23272 KB Output is correct
32 Correct 62 ms 2576 KB Output is correct
33 Correct 513 ms 6696 KB Output is correct
34 Correct 14 ms 340 KB Output is correct
35 Correct 13 ms 340 KB Output is correct
36 Correct 14 ms 360 KB Output is correct
37 Correct 16 ms 360 KB Output is correct
38 Correct 14 ms 340 KB Output is correct
39 Correct 180 ms 468 KB Output is correct
40 Correct 155 ms 588 KB Output is correct
41 Correct 1928 ms 1756 KB Output is correct
42 Correct 2087 ms 1800 KB Output is correct
43 Correct 2275 ms 1596 KB Output is correct
44 Correct 3849 ms 2008 KB Output is correct
45 Correct 40 ms 1620 KB Output is correct
46 Correct 46 ms 1700 KB Output is correct
47 Correct 54 ms 1688 KB Output is correct
48 Correct 53 ms 1688 KB Output is correct
49 Correct 65 ms 1620 KB Output is correct
50 Execution timed out 5084 ms 7836 KB Time limit exceeded
51 Halted 0 ms 0 KB -