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Submission #549048

# Submission time Handle Problem Language Result Execution time Memory
549048 2022-04-15T03:13:25 Z czhang2718 Jakarta Skyscrapers (APIO15_skyscraper) C++17
57 / 100
 1000 ms 25904 KB 
#include "bits/stdc++.h"
using namespace std;

typedef pair<int,int> pii;
#define f first
#define s second
#define nl '\n'

const int N=30001;
const int B=175;
int n,m;
vector<int> v[N];
int P[N], x[N];
int dist[N][B];

int main(){
  cin.tie(0)->sync_with_stdio(0);

  cin >> n >> m;
  for(int i=0; i<m; i++){
    cin >> x[i] >> P[i];
    v[x[i]].push_back(i);
  }
  for(int i=0; i<n; i++){
    for(int j=0; j<B; j++) dist[i][j]=1e9;
  }
  dist[0][0]=0;

  set<pair<int, pii>> s;
  s.insert({0, {x[0], 0}});

  auto go=[&](int i, int d, int b){
    // cout << "go " << i << " " << d << " " << b << nl;
    for(int c:{i+b, i-b}){
      if(c<0 || c>=n) continue;
      // cout << "-> " << c << " " << b << nl;
      if(d+1<dist[c][b]){
        if(dist[c][b]!=1e9) s.erase({dist[c][b], {c, b}});
        dist[c][b]=d+1;
        s.insert({d+1, {c, b}});
      }
      if(d+1<dist[c][0]){
        if(dist[c][0]!=1e9) s.erase({dist[c][0], {c, 0}});
        dist[c][0]=d+1;
        s.insert({d+1, {c, 0}});
      }
    }
  };

  while(!s.empty()){
    auto p=*s.begin(); s.erase(s.begin());
    int d=p.f, a=p.s.f, b=p.s.s;
    // cout << a << " " << b << nl;
    if(a==x[1]){
      cout << d; return 0;
    }
    if(!b){
      for(int i:v[a]){
        if(P[i]>=B){
          for(int j=a%P[i]; j<n; j+=P[i]){
            if(d+abs(j-a)/P[i]<dist[j][0]){
              if(dist[j][0]!=1e9) s.erase({dist[j][0], {j, 0}});
              dist[j][0]=d+abs(j-a)/P[i];
              s.insert({dist[j][0], {j, 0}});
            }
          }
        }
        else{
          go(a, d, P[i]);
        }
      }
    }
    else{
      go(a, d, b);
    }
  }
  cout << -1;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 1108 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 1036 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 1108 KB Output is correct
11 Correct 1 ms 1168 KB Output is correct
12 Correct 1 ms 1108 KB Output is correct
13 Correct 2 ms 1152 KB Output is correct
14 Correct 3 ms 1236 KB Output is correct
15 Correct 2 ms 1236 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 1108 KB Output is correct
11 Correct 2 ms 1108 KB Output is correct
12 Correct 1 ms 1108 KB Output is correct
13 Correct 1 ms 1036 KB Output is correct
14 Correct 4 ms 1236 KB Output is correct
15 Correct 2 ms 1236 KB Output is correct
16 Correct 1 ms 1108 KB Output is correct
17 Correct 2 ms 1620 KB Output is correct
18 Correct 2 ms 2260 KB Output is correct
19 Correct 2 ms 2388 KB Output is correct
20 Correct 2 ms 2516 KB Output is correct
21 Correct 2 ms 1292 KB Output is correct
22 Correct 2 ms 2260 KB Output is correct
23 Correct 2 ms 2132 KB Output is correct
24 Correct 3 ms 2448 KB Output is correct
25 Correct 2 ms 2388 KB Output is correct
26 Correct 2 ms 2388 KB Output is correct
27 Correct 2 ms 2388 KB Output is correct
28 Correct 4 ms 2516 KB Output is correct
29 Correct 10 ms 2444 KB Output is correct
30 Correct 4 ms 2308 KB Output is correct
31 Correct 6 ms 2388 KB Output is correct
32 Correct 4 ms 2440 KB Output is correct
33 Correct 18 ms 2704 KB Output is correct
34 Correct 14 ms 2644 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 2 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 2 ms 980 KB Output is correct
8 Correct 2 ms 1028 KB Output is correct
9 Correct 2 ms 1032 KB Output is correct
10 Correct 1 ms 1108 KB Output is correct
11 Correct 1 ms 1108 KB Output is correct
12 Correct 2 ms 1108 KB Output is correct
13 Correct 1 ms 1108 KB Output is correct
14 Correct 2 ms 1300 KB Output is correct
15 Correct 2 ms 1236 KB Output is correct
16 Correct 1 ms 1108 KB Output is correct
17 Correct 2 ms 1684 KB Output is correct
18 Correct 2 ms 2260 KB Output is correct
19 Correct 3 ms 2516 KB Output is correct
20 Correct 3 ms 2448 KB Output is correct
21 Correct 2 ms 1236 KB Output is correct
22 Correct 2 ms 2260 KB Output is correct
23 Correct 3 ms 2132 KB Output is correct
24 Correct 3 ms 2452 KB Output is correct
25 Correct 3 ms 2388 KB Output is correct
26 Correct 2 ms 2388 KB Output is correct
27 Correct 2 ms 2388 KB Output is correct
28 Correct 3 ms 2516 KB Output is correct
29 Correct 9 ms 2496 KB Output is correct
30 Correct 4 ms 2388 KB Output is correct
31 Correct 6 ms 2476 KB Output is correct
32 Correct 5 ms 2388 KB Output is correct
33 Correct 18 ms 2644 KB Output is correct
34 Correct 15 ms 2700 KB Output is correct
35 Correct 12 ms 2896 KB Output is correct
36 Correct 3 ms 1876 KB Output is correct
37 Correct 9 ms 3092 KB Output is correct
38 Correct 9 ms 3224 KB Output is correct
39 Correct 7 ms 3052 KB Output is correct
40 Correct 7 ms 3028 KB Output is correct
41 Correct 10 ms 3156 KB Output is correct
42 Correct 6 ms 3032 KB Output is correct
43 Correct 5 ms 3028 KB Output is correct
44 Correct 6 ms 3028 KB Output is correct
45 Correct 69 ms 4864 KB Output is correct
46 Correct 53 ms 4940 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 1028 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 1032 KB Output is correct
10 Correct 1 ms 1036 KB Output is correct
11 Correct 1 ms 1108 KB Output is correct
12 Correct 1 ms 1040 KB Output is correct
13 Correct 1 ms 1108 KB Output is correct
14 Correct 2 ms 1236 KB Output is correct
15 Correct 2 ms 1236 KB Output is correct
16 Correct 1 ms 1108 KB Output is correct
17 Correct 2 ms 1620 KB Output is correct
18 Correct 2 ms 2192 KB Output is correct
19 Correct 2 ms 2440 KB Output is correct
20 Correct 3 ms 2388 KB Output is correct
21 Correct 2 ms 1236 KB Output is correct
22 Correct 2 ms 2188 KB Output is correct
23 Correct 2 ms 2132 KB Output is correct
24 Correct 3 ms 2388 KB Output is correct
25 Correct 3 ms 2388 KB Output is correct
26 Correct 2 ms 2448 KB Output is correct
27 Correct 2 ms 2388 KB Output is correct
28 Correct 3 ms 2388 KB Output is correct
29 Correct 10 ms 2508 KB Output is correct
30 Correct 3 ms 2324 KB Output is correct
31 Correct 6 ms 2388 KB Output is correct
32 Correct 4 ms 2440 KB Output is correct
33 Correct 24 ms 2572 KB Output is correct
34 Correct 12 ms 2644 KB Output is correct
35 Correct 10 ms 2908 KB Output is correct
36 Correct 4 ms 1876 KB Output is correct
37 Correct 8 ms 3108 KB Output is correct
38 Correct 9 ms 3220 KB Output is correct
39 Correct 7 ms 3096 KB Output is correct
40 Correct 7 ms 3108 KB Output is correct
41 Correct 8 ms 3156 KB Output is correct
42 Correct 6 ms 3040 KB Output is correct
43 Correct 5 ms 3092 KB Output is correct
44 Correct 6 ms 3028 KB Output is correct
45 Correct 65 ms 4868 KB Output is correct
46 Correct 38 ms 4892 KB Output is correct
47 Correct 23 ms 10904 KB Output is correct
48 Correct 15 ms 17800 KB Output is correct
49 Correct 20 ms 19212 KB Output is correct
50 Correct 15 ms 20692 KB Output is correct
51 Correct 36 ms 23416 KB Output is correct
52 Correct 38 ms 23440 KB Output is correct
53 Correct 19 ms 22660 KB Output is correct
54 Correct 14 ms 21560 KB Output is correct
55 Correct 13 ms 21584 KB Output is correct
56 Correct 24 ms 22868 KB Output is correct
57 Correct 13 ms 21604 KB Output is correct
58 Correct 31 ms 22092 KB Output is correct
59 Correct 23 ms 22288 KB Output is correct
60 Correct 32 ms 22252 KB Output is correct
61 Correct 29 ms 22284 KB Output is correct
62 Correct 48 ms 22944 KB Output is correct
63 Correct 82 ms 24076 KB Output is correct
64 Correct 93 ms 24068 KB Output is correct
65 Correct 403 ms 24204 KB Output is correct
66 Execution timed out 1000 ms 25904 KB Time limit exceeded
67 Halted 0 ms 0 KB -