oj.uz

Submission #244884

# Submission time Handle Problem Language Result Execution time Memory
244884 2020-07-05T08:29:56 Z rama_pang Collecting Stamps 3 (JOI20_ho_t3) C++14
25 / 100
 2000 ms 147928 KB 
#include <bits/stdc++.h>
using namespace std;

using lint = long long;
const int MAXN = 205;

int N, L;
int X[MAXN], T[MAXN];
lint dist[MAXN][MAXN][2][MAXN];

struct State {
  int left;
  int right;
  int pos_right;
  int stamps;
  State() {}
  State(int l, int r, int p, int s) : left(l), right(r), pos_right(p), stamps(s) {}
  bool operator < (const State &o) const {
    return stamps < o.stamps;
  }
};

int Distance(int a, int b) {
  if (a > b) swap(a, b);
  return min(X[b] - X[a], X[a] + L - X[b]);
}

int main() {
  ios::sync_with_stdio(0);
  cin.tie(0), cout.tie(0);
  memset(dist, -1, sizeof(dist));

  cin >> N >> L;
  for (int i = 1; i <= N; i++) {
    cin >> X[i];
  }
  X[N + 1] = L;
  for (int i = 1; i <= N; i++) {
    cin >> T[i];
  }
  priority_queue<pair<lint, State>, vector<pair<lint, State>>, greater<pair<lint, State>>> pq;
  pq.emplace(0, State(0, N + 1, 0, 0));
  dist[0][N + 1][0][0] = 0;
  int ans = 0;
  while (!pq.empty()) {
    int left = pq.top().second.left;
    int right = pq.top().second.right;
    int pos_right = pq.top().second.pos_right;
    int stamps = pq.top().second.stamps;
    lint dt = pq.top().first;
    pq.pop();
    ans = max(ans, stamps);
    if (left > right || dist[left][right][pos_right][stamps] != dt) {
      continue;
    }
    int cur = pos_right ? right : left;
    if (left + 1 < right) {
      lint &nxt = dist[left + 1][right][0][stamps + (dt + Distance(left + 1, cur) <= T[left + 1])];
      if (nxt == -1 || nxt > dt + Distance(left + 1, cur)) {
        nxt = dt + Distance(left + 1, cur);
        pq.emplace(nxt, State(left + 1, right, 0, stamps + (dt + Distance(left + 1, cur) <= T[left + 1])));
      }
    }
    if (left < right - 1) {
      lint &nxt = dist[left][right - 1][1][stamps + (dt + Distance(right - 1, cur) <= T[right - 1])];
      if (nxt == -1 || nxt > dt + Distance(right - 1, cur)) {
        nxt = dt + Distance(right - 1, cur);
        pq.emplace(nxt, State(left, right - 1, 1, stamps + (dt + Distance(right - 1, cur) <= T[right - 1])));
      }
    }
  }
  cout << ans << "\n";
  return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 135160 KB Output is correct
2 Correct 70 ms 135160 KB Output is correct
3 Correct 70 ms 135288 KB Output is correct
4 Correct 70 ms 135288 KB Output is correct
5 Correct 71 ms 135288 KB Output is correct
6 Correct 75 ms 135288 KB Output is correct
7 Correct 72 ms 135288 KB Output is correct
8 Correct 70 ms 135288 KB Output is correct
9 Correct 76 ms 135288 KB Output is correct
10 Correct 70 ms 135160 KB Output is correct
11 Correct 70 ms 135288 KB Output is correct
12 Correct 77 ms 135292 KB Output is correct
13 Correct 73 ms 135288 KB Output is correct
14 Correct 76 ms 135332 KB Output is correct
15 Correct 70 ms 135264 KB Output is correct
16 Correct 69 ms 135160 KB Output is correct
17 Correct 76 ms 135164 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 135160 KB Output is correct
2 Correct 70 ms 135160 KB Output is correct
3 Correct 70 ms 135288 KB Output is correct
4 Correct 70 ms 135288 KB Output is correct
5 Correct 71 ms 135288 KB Output is correct
6 Correct 75 ms 135288 KB Output is correct
7 Correct 72 ms 135288 KB Output is correct
8 Correct 70 ms 135288 KB Output is correct
9 Correct 76 ms 135288 KB Output is correct
10 Correct 70 ms 135160 KB Output is correct
11 Correct 70 ms 135288 KB Output is correct
12 Correct 77 ms 135292 KB Output is correct
13 Correct 73 ms 135288 KB Output is correct
14 Correct 76 ms 135332 KB Output is correct
15 Correct 70 ms 135264 KB Output is correct
16 Correct 69 ms 135160 KB Output is correct
17 Correct 76 ms 135164 KB Output is correct
18 Correct 77 ms 135160 KB Output is correct
19 Correct 69 ms 135288 KB Output is correct
20 Correct 71 ms 135160 KB Output is correct
21 Correct 70 ms 135288 KB Output is correct
22 Correct 70 ms 135160 KB Output is correct
23 Correct 72 ms 135160 KB Output is correct
24 Correct 69 ms 135160 KB Output is correct
25 Correct 72 ms 135288 KB Output is correct
26 Correct 69 ms 135228 KB Output is correct
27 Correct 70 ms 135160 KB Output is correct
28 Correct 71 ms 135160 KB Output is correct
29 Correct 69 ms 135160 KB Output is correct
30 Correct 76 ms 135288 KB Output is correct
31 Correct 76 ms 135160 KB Output is correct
32 Correct 72 ms 135160 KB Output is correct
33 Correct 69 ms 135160 KB Output is correct
34 Correct 70 ms 135416 KB Output is correct
35 Correct 70 ms 135292 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 135160 KB Output is correct
2 Correct 70 ms 135160 KB Output is correct
3 Correct 70 ms 135288 KB Output is correct
4 Correct 70 ms 135288 KB Output is correct
5 Correct 71 ms 135288 KB Output is correct
6 Correct 75 ms 135288 KB Output is correct
7 Correct 72 ms 135288 KB Output is correct
8 Correct 70 ms 135288 KB Output is correct
9 Correct 76 ms 135288 KB Output is correct
10 Correct 70 ms 135160 KB Output is correct
11 Correct 70 ms 135288 KB Output is correct
12 Correct 77 ms 135292 KB Output is correct
13 Correct 73 ms 135288 KB Output is correct
14 Correct 76 ms 135332 KB Output is correct
15 Correct 70 ms 135264 KB Output is correct
16 Correct 69 ms 135160 KB Output is correct
17 Correct 76 ms 135164 KB Output is correct
18 Correct 804 ms 141540 KB Output is correct
19 Correct 409 ms 138472 KB Output is correct
20 Correct 170 ms 136948 KB Output is correct
21 Correct 338 ms 138452 KB Output is correct
22 Correct 584 ms 141540 KB Output is correct
23 Correct 181 ms 136936 KB Output is correct
24 Correct 96 ms 136180 KB Output is correct
25 Correct 165 ms 136944 KB Output is correct
26 Correct 81 ms 135544 KB Output is correct
27 Correct 198 ms 136948 KB Output is correct
28 Correct 104 ms 135740 KB Output is correct
29 Correct 161 ms 136180 KB Output is correct
30 Correct 102 ms 136180 KB Output is correct
31 Correct 168 ms 136180 KB Output is correct
32 Correct 106 ms 136180 KB Output is correct
33 Correct 150 ms 136084 KB Output is correct
34 Correct 81 ms 135544 KB Output is correct
35 Correct 90 ms 135728 KB Output is correct
36 Correct 83 ms 135736 KB Output is correct
37 Correct 96 ms 135736 KB Output is correct
38 Correct 96 ms 136180 KB Output is correct
39 Correct 117 ms 135864 KB Output is correct
40 Correct 93 ms 135736 KB Output is correct
41 Correct 1404 ms 147672 KB Output is correct
42 Correct 88 ms 135544 KB Output is correct
43 Correct 1297 ms 147672 KB Output is correct
44 Correct 90 ms 135544 KB Output is correct
45 Correct 1352 ms 147672 KB Output is correct
46 Correct 80 ms 135544 KB Output is correct

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 135160 KB Output is correct
2 Correct 70 ms 135160 KB Output is correct
3 Correct 70 ms 135288 KB Output is correct
4 Correct 70 ms 135288 KB Output is correct
5 Correct 71 ms 135288 KB Output is correct
6 Correct 75 ms 135288 KB Output is correct
7 Correct 72 ms 135288 KB Output is correct
8 Correct 70 ms 135288 KB Output is correct
9 Correct 76 ms 135288 KB Output is correct
10 Correct 70 ms 135160 KB Output is correct
11 Correct 70 ms 135288 KB Output is correct
12 Correct 77 ms 135292 KB Output is correct
13 Correct 73 ms 135288 KB Output is correct
14 Correct 76 ms 135332 KB Output is correct
15 Correct 70 ms 135264 KB Output is correct
16 Correct 69 ms 135160 KB Output is correct
17 Correct 76 ms 135164 KB Output is correct
18 Correct 77 ms 135160 KB Output is correct
19 Correct 69 ms 135288 KB Output is correct
20 Correct 71 ms 135160 KB Output is correct
21 Correct 70 ms 135288 KB Output is correct
22 Correct 70 ms 135160 KB Output is correct
23 Correct 72 ms 135160 KB Output is correct
24 Correct 69 ms 135160 KB Output is correct
25 Correct 72 ms 135288 KB Output is correct
26 Correct 69 ms 135228 KB Output is correct
27 Correct 70 ms 135160 KB Output is correct
28 Correct 71 ms 135160 KB Output is correct
29 Correct 69 ms 135160 KB Output is correct
30 Correct 76 ms 135288 KB Output is correct
31 Correct 76 ms 135160 KB Output is correct
32 Correct 72 ms 135160 KB Output is correct
33 Correct 69 ms 135160 KB Output is correct
34 Correct 70 ms 135416 KB Output is correct
35 Correct 70 ms 135292 KB Output is correct
36 Correct 804 ms 141540 KB Output is correct
37 Correct 409 ms 138472 KB Output is correct
38 Correct 170 ms 136948 KB Output is correct
39 Correct 338 ms 138452 KB Output is correct
40 Correct 584 ms 141540 KB Output is correct
41 Correct 181 ms 136936 KB Output is correct
42 Correct 96 ms 136180 KB Output is correct
43 Correct 165 ms 136944 KB Output is correct
44 Correct 81 ms 135544 KB Output is correct
45 Correct 198 ms 136948 KB Output is correct
46 Correct 104 ms 135740 KB Output is correct
47 Correct 161 ms 136180 KB Output is correct
48 Correct 102 ms 136180 KB Output is correct
49 Correct 168 ms 136180 KB Output is correct
50 Correct 106 ms 136180 KB Output is correct
51 Correct 150 ms 136084 KB Output is correct
52 Correct 81 ms 135544 KB Output is correct
53 Correct 90 ms 135728 KB Output is correct
54 Correct 83 ms 135736 KB Output is correct
55 Correct 96 ms 135736 KB Output is correct
56 Correct 96 ms 136180 KB Output is correct
57 Correct 117 ms 135864 KB Output is correct
58 Correct 93 ms 135736 KB Output is correct
59 Correct 1404 ms 147672 KB Output is correct
60 Correct 88 ms 135544 KB Output is correct
61 Correct 1297 ms 147672 KB Output is correct
62 Correct 90 ms 135544 KB Output is correct
63 Correct 1352 ms 147672 KB Output is correct
64 Correct 80 ms 135544 KB Output is correct
65 Correct 1157 ms 147780 KB Output is correct
66 Correct 997 ms 147688 KB Output is correct
67 Correct 1055 ms 147928 KB Output is correct
68 Correct 743 ms 141536 KB Output is correct
69 Correct 1200 ms 147668 KB Output is correct
70 Correct 1060 ms 141536 KB Output is correct
71 Correct 801 ms 147800 KB Output is correct
72 Correct 1190 ms 147820 KB Output is correct
73 Correct 414 ms 141412 KB Output is correct
74 Correct 843 ms 141556 KB Output is correct
75 Correct 774 ms 147720 KB Output is correct
76 Correct 1414 ms 141664 KB Output is correct
77 Correct 1084 ms 147820 KB Output is correct
78 Correct 857 ms 138472 KB Output is correct
79 Correct 915 ms 147672 KB Output is correct
80 Correct 1374 ms 141540 KB Output is correct
81 Correct 697 ms 147800 KB Output is correct
82 Correct 517 ms 141568 KB Output is correct
83 Correct 1232 ms 147676 KB Output is correct
84 Correct 521 ms 141536 KB Output is correct
85 Correct 551 ms 141536 KB Output is correct
86 Correct 664 ms 141536 KB Output is correct
87 Correct 1048 ms 147800 KB Output is correct
88 Execution timed out 2057 ms 147672 KB Time limit exceeded
89 Halted 0 ms 0 KB -