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Submission #1084512

# Submission time Handle Problem Language Result Execution time Memory
1084512 2024-09-06T10:52:41 Z peacebringer1667 Jakarta Skyscrapers (APIO15_skyscraper) C++17
57 / 100
 667 ms 262148 KB 
#include<bits/stdc++.h>
#define ll long long
#define ldb long double
#define fi first
#define se second
#define sza(a) (int)a.size()
#define pir pair<int,int>
#define pirll pair<ll,ll>
using namespace std;
const int maxn = 3e4 + 5;

int B[maxn],P[maxn];
void input(int n){
    for (int i = 0 ; i < n ; i++)
      cin >> B[i] >> P[i];
}

namespace sub1{
	const int K = 2e3 + 5;
	bool check(int n){
		return (n <= K);
	}
	
	bool mark[K][K],vis[K];
	int dp[K];
	
	vector <vector<pir>> vec(100*K);
	vector <vector<int>> doge(K);

	void bfs(int n,int N){
		vec[0].push_back({B[0],P[0]});
	    
	    for (int len = 0 ; len < 100*N ; len++)
	      for (pir t : vec[len]){
	      	int Bi = t.fi,Pi = t.se;
			if (mark[Bi][Pi]) continue;
			
	      	mark[Bi][Pi] = 1;
	      	if (!vis[Bi])
			   dp[Bi] = len;
	      	
	      	if (Bi + Pi < N)
	      		vec[len + 1].push_back({Bi + Pi,Pi});
	      	if (Bi - Pi >= 0)
	      	    vec[len + 1].push_back({Bi - Pi,Pi});
	      	
	      	if (!vis[Bi])
	      	  for (int p : doge[Bi]){
	      	  	  if (Bi + p < N)
	      	  	    vec[len + 1].push_back({Bi + p,p});
	      	  	  if (Bi - p >= 0)
	      	  	    vec[len + 1].push_back({Bi - p,p});
				}
			
			vis[Bi] = 1;
		  }
	}
	
	int solve(int n,int N){
		//dp[i][k] : position i, jump k
		for (int i = 0 ; i < n ; i++)
		  doge[B[i]].push_back(P[i]);
		
		bfs(n,N);
		
		if (!vis[B[1]]) return -1;
		return dp[B[1]];
	}
}

namespace sub2{
	const int block = sqrt(maxn);
	
	bool vis[maxn];
	bool mark[maxn][block];
	int dp[maxn];
	
	vector <vector<pir>> vec(maxn * block);
	vector <vector<int>> doge(maxn);
	
	void bfs(int n,int N){
		vec[0].push_back({B[0],P[0]});
		
		for (int len = 0 ; len < N * block ; len++)
		  for (pir t : vec[len]){
		  	int Bi = t.fi,Pi = t.se;
		  	
		  	if (Pi <= block && mark[Bi][Pi]) continue;
		  	if (Pi <= block) mark[Bi][Pi] = 1;
		  	
			if (!vis[Bi]) dp[Bi] = len;
		  	
		  	if (!vis[Bi])
		  	for (int p : doge[Bi])
		  	  if (p > block){
		  	     for (int x = Bi + p ; x < N ; x += p)
		  	       if (x < N && !vis[x])
		  	       	vec[len + (x - Bi)/p].push_back({x,p});
			     
			     for (int x = Bi - p ; x >= 0 ; x -= p)
			       if (x >= 0 && !vis[x])
			         vec[len + (Bi - x)/p].push_back({x,p});
			  }
			if (!vis[Bi])
	      	  for (int p : doge[Bi]) 
				 if (p <= block){
	      	  	  if (Bi + p < N)
	      	  	    vec[len + 1].push_back({Bi + p,p});
	      	  	  if (Bi - p >= 0)
	      	  	    vec[len + 1].push_back({Bi - p,p});
				}
		    
		    if (Pi <= block && Bi + Pi < N)
		      vec[len + 1].push_back({Bi + Pi,Pi});
		    
		    if (Pi <= block && Bi - Pi >= 0)
		      vec[len + 1].push_back({Bi - Pi,Pi});
			
			vis[Bi] = 1;
		  }
	}
	
	int solve(int n,int N){
		for (int i = 0 ; i < n ; i++)
		  doge[B[i]].push_back(P[i]);
		
		bfs(n,N);
		
		if (!vis[B[1]]) return -1;
		return dp[B[1]];
	}
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);cout.tie(0);
	
	int N,n;
	cin >> N >> n;
	input(n);
	
	if (sub1::check(n))
	  cout << sub1::solve(n,N);else
	
	cout << sub2::solve(n,N);
	
	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 127660 KB Output is correct
2 Correct 54 ms 127736 KB Output is correct
3 Correct 64 ms 127824 KB Output is correct
4 Correct 56 ms 127824 KB Output is correct
5 Correct 54 ms 127828 KB Output is correct
6 Correct 53 ms 127848 KB Output is correct
7 Correct 54 ms 127824 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 54 ms 127604 KB Output is correct
2 Correct 65 ms 127836 KB Output is correct
3 Correct 51 ms 127824 KB Output is correct
4 Correct 54 ms 127820 KB Output is correct
5 Correct 67 ms 127824 KB Output is correct
6 Correct 59 ms 127836 KB Output is correct
7 Correct 60 ms 127852 KB Output is correct
8 Correct 50 ms 127824 KB Output is correct
9 Correct 53 ms 127824 KB Output is correct
10 Correct 55 ms 127824 KB Output is correct
11 Correct 59 ms 128088 KB Output is correct
12 Correct 58 ms 128080 KB Output is correct
13 Correct 69 ms 128080 KB Output is correct
14 Correct 58 ms 128084 KB Output is correct
15 Correct 56 ms 128004 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 127832 KB Output is correct
2 Correct 54 ms 127828 KB Output is correct
3 Correct 54 ms 127824 KB Output is correct
4 Correct 50 ms 127648 KB Output is correct
5 Correct 54 ms 127828 KB Output is correct
6 Correct 55 ms 127704 KB Output is correct
7 Correct 62 ms 127836 KB Output is correct
8 Correct 52 ms 127828 KB Output is correct
9 Correct 59 ms 127784 KB Output is correct
10 Correct 56 ms 127824 KB Output is correct
11 Correct 58 ms 128060 KB Output is correct
12 Correct 56 ms 128084 KB Output is correct
13 Correct 53 ms 128084 KB Output is correct
14 Correct 73 ms 128056 KB Output is correct
15 Correct 66 ms 128084 KB Output is correct
16 Correct 55 ms 127824 KB Output is correct
17 Correct 55 ms 129620 KB Output is correct
18 Correct 53 ms 127836 KB Output is correct
19 Correct 54 ms 127824 KB Output is correct
20 Correct 60 ms 131920 KB Output is correct
21 Correct 59 ms 127824 KB Output is correct
22 Correct 54 ms 127664 KB Output is correct
23 Correct 59 ms 130908 KB Output is correct
24 Correct 57 ms 131668 KB Output is correct
25 Correct 68 ms 131920 KB Output is correct
26 Correct 59 ms 131940 KB Output is correct
27 Correct 56 ms 131920 KB Output is correct
28 Correct 55 ms 132432 KB Output is correct
29 Correct 55 ms 132800 KB Output is correct
30 Correct 54 ms 131924 KB Output is correct
31 Correct 55 ms 132444 KB Output is correct
32 Correct 56 ms 132176 KB Output is correct
33 Correct 59 ms 133972 KB Output is correct
34 Correct 56 ms 133968 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 127836 KB Output is correct
2 Correct 56 ms 127732 KB Output is correct
3 Correct 54 ms 127660 KB Output is correct
4 Correct 54 ms 127820 KB Output is correct
5 Correct 53 ms 127836 KB Output is correct
6 Correct 55 ms 127824 KB Output is correct
7 Correct 59 ms 127824 KB Output is correct
8 Correct 56 ms 127732 KB Output is correct
9 Correct 54 ms 127828 KB Output is correct
10 Correct 62 ms 127828 KB Output is correct
11 Correct 57 ms 128076 KB Output is correct
12 Correct 54 ms 127928 KB Output is correct
13 Correct 55 ms 128092 KB Output is correct
14 Correct 53 ms 128080 KB Output is correct
15 Correct 63 ms 127996 KB Output is correct
16 Correct 55 ms 127828 KB Output is correct
17 Correct 56 ms 129620 KB Output is correct
18 Correct 56 ms 127824 KB Output is correct
19 Correct 55 ms 127828 KB Output is correct
20 Correct 59 ms 131920 KB Output is correct
21 Correct 55 ms 127828 KB Output is correct
22 Correct 69 ms 127824 KB Output is correct
23 Correct 51 ms 131152 KB Output is correct
24 Correct 55 ms 131660 KB Output is correct
25 Correct 58 ms 131936 KB Output is correct
26 Correct 56 ms 131924 KB Output is correct
27 Correct 62 ms 132052 KB Output is correct
28 Correct 58 ms 132436 KB Output is correct
29 Correct 58 ms 132812 KB Output is correct
30 Correct 57 ms 131920 KB Output is correct
31 Correct 69 ms 132392 KB Output is correct
32 Correct 57 ms 132176 KB Output is correct
33 Correct 55 ms 133980 KB Output is correct
34 Correct 59 ms 133972 KB Output is correct
35 Correct 55 ms 129668 KB Output is correct
36 Correct 58 ms 128336 KB Output is correct
37 Correct 63 ms 130524 KB Output is correct
38 Correct 61 ms 130640 KB Output is correct
39 Correct 58 ms 130640 KB Output is correct
40 Correct 70 ms 130560 KB Output is correct
41 Correct 76 ms 130564 KB Output is correct
42 Correct 70 ms 129488 KB Output is correct
43 Correct 60 ms 129504 KB Output is correct
44 Correct 62 ms 129484 KB Output is correct
45 Correct 66 ms 135192 KB Output is correct
46 Correct 67 ms 135100 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 127824 KB Output is correct
2 Correct 54 ms 127828 KB Output is correct
3 Correct 67 ms 127824 KB Output is correct
4 Correct 49 ms 127824 KB Output is correct
5 Correct 53 ms 127824 KB Output is correct
6 Correct 58 ms 127824 KB Output is correct
7 Correct 55 ms 127840 KB Output is correct
8 Correct 53 ms 127828 KB Output is correct
9 Correct 53 ms 127840 KB Output is correct
10 Correct 52 ms 127840 KB Output is correct
11 Correct 51 ms 128080 KB Output is correct
12 Correct 53 ms 128076 KB Output is correct
13 Correct 55 ms 128084 KB Output is correct
14 Correct 56 ms 128084 KB Output is correct
15 Correct 53 ms 128096 KB Output is correct
16 Correct 53 ms 127824 KB Output is correct
17 Correct 58 ms 129424 KB Output is correct
18 Correct 57 ms 127832 KB Output is correct
19 Correct 56 ms 127828 KB Output is correct
20 Correct 53 ms 131920 KB Output is correct
21 Correct 55 ms 127828 KB Output is correct
22 Correct 66 ms 127772 KB Output is correct
23 Correct 56 ms 131080 KB Output is correct
24 Correct 61 ms 131668 KB Output is correct
25 Correct 58 ms 131920 KB Output is correct
26 Correct 58 ms 131924 KB Output is correct
27 Correct 55 ms 131920 KB Output is correct
28 Correct 54 ms 132340 KB Output is correct
29 Correct 56 ms 132944 KB Output is correct
30 Correct 55 ms 131920 KB Output is correct
31 Correct 50 ms 132432 KB Output is correct
32 Correct 55 ms 132176 KB Output is correct
33 Correct 54 ms 133984 KB Output is correct
34 Correct 82 ms 133972 KB Output is correct
35 Correct 75 ms 129876 KB Output is correct
36 Correct 51 ms 128180 KB Output is correct
37 Correct 63 ms 130636 KB Output is correct
38 Correct 70 ms 130660 KB Output is correct
39 Correct 65 ms 130644 KB Output is correct
40 Correct 68 ms 130496 KB Output is correct
41 Correct 62 ms 130648 KB Output is correct
42 Correct 52 ms 129492 KB Output is correct
43 Correct 59 ms 129488 KB Output is correct
44 Correct 56 ms 129488 KB Output is correct
45 Correct 86 ms 135288 KB Output is correct
46 Correct 66 ms 135192 KB Output is correct
47 Correct 73 ms 139808 KB Output is correct
48 Correct 64 ms 128592 KB Output is correct
49 Correct 72 ms 128472 KB Output is correct
50 Correct 66 ms 128472 KB Output is correct
51 Correct 88 ms 138548 KB Output is correct
52 Correct 85 ms 138992 KB Output is correct
53 Correct 70 ms 135548 KB Output is correct
54 Runtime error 667 ms 262148 KB Execution killed with signal 9
55 Halted 0 ms 0 KB -