Submission #924153

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
924153	2024-02-08T14:54:33 Z	vjudge1	Maze (JOI23_ho_t3)	C++17	8 / 100	102 ms	72672 KB

Main

#include <bits/stdc++.h>
#define pb push_back
#define fst first
#define snd second
#define fore(i,a,b) for(ll i=a,ggdem=b;i<ggdem;++i)
#define SZ(x) ((int)x.size())
#define ALL(x) x.begin(),x.end()
#define mset(a,v) memset((a),(v),sizeof(a))
#define FIN ios::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define imp(v) for(auto edu:v)cout<<edu<<" "; cout<<"\n"
using namespace std;
typedef long long ll;
typedef pair<ll,ll> ii;
const ll MAXN=6e6+5;

ll a[MAXN];
ll n,m,k;
ll cv(ii x){return m*x.fst+x.snd;}
ii cv(ll x){return {x/m,x%m};}
vector<ii>dir={{0,1},{-1,0},{0,-1},{1,0}};
ii operator+(ii a, ii b){return {a.fst+b.fst,a.snd+b.snd};}
void operator+=(ii &a, ii b){a=a+b;}
bool allowed(ii p){
	auto [i,j]=p;
	if(i<0||i>=n||j<0||j>=m)return 0;
	return 1;
}
ll d[MAXN];
deque<ii>q;
void go(ii x, ii y, ll g=0){
	if(!allowed(y)||d[cv(y)]!=-1||(!g&&a[cv(y)]))return;
	if(!g)q.push_front(y),d[cv(y)]=d[cv(x)];
	else q.pb(y),d[cv(y)]=d[cv(x)]+1;
}
ll reach(ii x, ii e){
	return (max(abs(x.fst-e.fst),abs(x.snd-e.snd))<=k&&
	       abs(x.fst-e.fst)+abs(x.snd-e.snd)<2*k);
}
ll bfs(ii s, ii e){
	mset(d,-1);
	d[cv(s)]=0;
	q.push_front(s);
	ll res=MAXN;
	while(SZ(q)){
		auto x=q.front(); q.pop_front();
		for(auto add:dir){
			auto y=x+add;
			go(x,y);
		}
		// continue; // sb1
		auto [i,j]=x;
		if(reach(x,e))res=min(res,d[cv(x)]+1);
		for(ii y={i-k,j-k+1};y.snd<j+k;y+=dir[0])go(x,y,1);
		for(ii y={i+k,j-k+1};y.snd<j+k;y+=dir[0])go(x,y,1);
		for(ii y={i-k+1,j-k};y.fst<i+k;y+=dir[3])go(x,y,1);
		for(ii y={i-k+1,j+k};y.fst<i+k;y+=dir[3])go(x,y,1);
	}
	if(d[cv(e)]!=-1)res=min(res,d[cv(e)]);
	return res;
}

int main(){FIN;
	cin>>n>>m>>k;
	ii s,e; cin>>s.fst>>s.snd>>e.fst>>e.snd; s.fst--,s.snd--,e.fst--,e.snd--;
	fore(i,0,n*m){
		char c; cin>>c;
		a[i]=(c=='#');
	}
	cout<<bfs(s,e)<<"\n";
	return 0;
}

Subtask #1
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	47708 KB	Output is correct
2	Correct	7 ms	47768 KB	Output is correct
3	Correct	7 ms	47832 KB	Output is correct
4	Correct	6 ms	47708 KB	Output is correct
5	Correct	6 ms	47832 KB	Output is correct
6	Correct	6 ms	47704 KB	Output is correct
7	Correct	7 ms	47708 KB	Output is correct
8	Correct	6 ms	47800 KB	Output is correct
9	Correct	6 ms	47708 KB	Output is correct
10	Correct	7 ms	47960 KB	Output is correct
11	Correct	6 ms	47708 KB	Output is correct
12	Correct	6 ms	47792 KB	Output is correct
13	Correct	7 ms	47784 KB	Output is correct
14	Correct	6 ms	47708 KB	Output is correct
15	Correct	6 ms	47704 KB	Output is correct
16	Correct	7 ms	47764 KB	Output is correct
17	Correct	6 ms	47960 KB	Output is correct
18	Correct	6 ms	47960 KB	Output is correct
19	Correct	10 ms	49752 KB	Output is correct
20	Correct	8 ms	47704 KB	Output is correct
21	Correct	10 ms	50268 KB	Output is correct
22	Correct	10 ms	49756 KB	Output is correct
23	Correct	10 ms	49756 KB	Output is correct
24	Correct	10 ms	49852 KB	Output is correct
25	Correct	10 ms	49756 KB	Output is correct
26	Correct	10 ms	49756 KB	Output is correct
27	Correct	10 ms	49756 KB	Output is correct
28	Correct	9 ms	49916 KB	Output is correct
29	Correct	15 ms	50012 KB	Output is correct
30	Correct	11 ms	49752 KB	Output is correct
31	Correct	14 ms	51036 KB	Output is correct
32	Correct	16 ms	49920 KB	Output is correct
33	Correct	15 ms	49756 KB	Output is correct
34	Correct	12 ms	49756 KB	Output is correct
35	Correct	13 ms	49756 KB	Output is correct
36	Correct	15 ms	50016 KB	Output is correct
37	Correct	15 ms	49756 KB	Output is correct
38	Correct	15 ms	49756 KB	Output is correct
39	Correct	87 ms	60352 KB	Output is correct
40	Correct	16 ms	49756 KB	Output is correct
41	Correct	15 ms	49752 KB	Output is correct
42	Correct	18 ms	49756 KB	Output is correct
43	Correct	17 ms	49752 KB	Output is correct
44	Correct	45 ms	53852 KB	Output is correct
45	Correct	46 ms	53852 KB	Output is correct
46	Correct	86 ms	72672 KB	Output is correct
47	Correct	94 ms	60192 KB	Output is correct
48	Correct	84 ms	59996 KB	Output is correct
49	Correct	63 ms	60144 KB	Output is correct
50	Correct	66 ms	59996 KB	Output is correct
51	Correct	101 ms	60636 KB	Output is correct
52	Correct	102 ms	60108 KB	Output is correct
53	Correct	86 ms	60124 KB	Output is correct

Subtask #2
0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	47708 KB	Output is correct
2	Correct	7 ms	47708 KB	Output is correct
3	Correct	6 ms	47828 KB	Output is correct
4	Correct	7 ms	47708 KB	Output is correct
5	Correct	7 ms	47708 KB	Output is correct
6	Incorrect	6 ms	47708 KB	Output isn't correct
7	Halted	0 ms	0 KB	-

Subtask #3
0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	47708 KB	Output is correct
2	Correct	6 ms	47704 KB	Output is correct
3	Correct	6 ms	47708 KB	Output is correct
4	Correct	6 ms	47832 KB	Output is correct
5	Incorrect	7 ms	47708 KB	Output isn't correct
6	Halted	0 ms	0 KB	-

Subtask #4
0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	47708 KB	Output is correct
2	Correct	7 ms	47708 KB	Output is correct
3	Correct	6 ms	47828 KB	Output is correct
4	Correct	7 ms	47708 KB	Output is correct
5	Correct	7 ms	47708 KB	Output is correct
6	Incorrect	6 ms	47708 KB	Output isn't correct
7	Halted	0 ms	0 KB	-

Subtask #5
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	47708 KB	Output is correct
2	Correct	7 ms	47708 KB	Output is correct
3	Correct	6 ms	47828 KB	Output is correct
4	Correct	7 ms	47708 KB	Output is correct
5	Correct	7 ms	47708 KB	Output is correct
6	Incorrect	6 ms	47708 KB	Output isn't correct
7	Halted	0 ms	0 KB	-

Subtask #6
0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	47708 KB	Output is correct
2	Correct	7 ms	47768 KB	Output is correct
3	Correct	7 ms	47832 KB	Output is correct
4	Correct	6 ms	47708 KB	Output is correct
5	Correct	6 ms	47832 KB	Output is correct
6	Correct	6 ms	47704 KB	Output is correct
7	Correct	7 ms	47708 KB	Output is correct
8	Correct	6 ms	47800 KB	Output is correct
9	Correct	6 ms	47708 KB	Output is correct
10	Correct	7 ms	47960 KB	Output is correct
11	Correct	6 ms	47708 KB	Output is correct
12	Correct	6 ms	47792 KB	Output is correct
13	Correct	7 ms	47784 KB	Output is correct
14	Correct	6 ms	47708 KB	Output is correct
15	Correct	6 ms	47704 KB	Output is correct
16	Correct	7 ms	47764 KB	Output is correct
17	Correct	6 ms	47960 KB	Output is correct
18	Correct	6 ms	47960 KB	Output is correct
19	Correct	10 ms	49752 KB	Output is correct
20	Correct	8 ms	47704 KB	Output is correct
21	Correct	10 ms	50268 KB	Output is correct
22	Correct	10 ms	49756 KB	Output is correct
23	Correct	10 ms	49756 KB	Output is correct
24	Correct	10 ms	49852 KB	Output is correct
25	Correct	10 ms	49756 KB	Output is correct
26	Correct	10 ms	49756 KB	Output is correct
27	Correct	10 ms	49756 KB	Output is correct
28	Correct	9 ms	49916 KB	Output is correct
29	Correct	15 ms	50012 KB	Output is correct
30	Correct	11 ms	49752 KB	Output is correct
31	Correct	14 ms	51036 KB	Output is correct
32	Correct	16 ms	49920 KB	Output is correct
33	Correct	15 ms	49756 KB	Output is correct
34	Correct	12 ms	49756 KB	Output is correct
35	Correct	13 ms	49756 KB	Output is correct
36	Correct	15 ms	50016 KB	Output is correct
37	Correct	15 ms	49756 KB	Output is correct
38	Correct	15 ms	49756 KB	Output is correct
39	Correct	87 ms	60352 KB	Output is correct
40	Correct	16 ms	49756 KB	Output is correct
41	Correct	15 ms	49752 KB	Output is correct
42	Correct	18 ms	49756 KB	Output is correct
43	Correct	17 ms	49752 KB	Output is correct
44	Correct	45 ms	53852 KB	Output is correct
45	Correct	46 ms	53852 KB	Output is correct
46	Correct	86 ms	72672 KB	Output is correct
47	Correct	94 ms	60192 KB	Output is correct
48	Correct	84 ms	59996 KB	Output is correct
49	Correct	63 ms	60144 KB	Output is correct
50	Correct	66 ms	59996 KB	Output is correct
51	Correct	101 ms	60636 KB	Output is correct
52	Correct	102 ms	60108 KB	Output is correct
53	Correct	86 ms	60124 KB	Output is correct
54	Correct	6 ms	47708 KB	Output is correct
55	Correct	7 ms	47708 KB	Output is correct
56	Correct	6 ms	47828 KB	Output is correct
57	Correct	7 ms	47708 KB	Output is correct
58	Correct	7 ms	47708 KB	Output is correct
59	Incorrect	6 ms	47708 KB	Output isn't correct
60	Halted	0 ms	0 KB	-

Subtask #7
0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	47708 KB	Output is correct
2	Correct	7 ms	47768 KB	Output is correct
3	Correct	7 ms	47832 KB	Output is correct
4	Correct	6 ms	47708 KB	Output is correct
5	Correct	6 ms	47832 KB	Output is correct
6	Correct	6 ms	47704 KB	Output is correct
7	Correct	7 ms	47708 KB	Output is correct
8	Correct	6 ms	47800 KB	Output is correct
9	Correct	6 ms	47708 KB	Output is correct
10	Correct	7 ms	47960 KB	Output is correct
11	Correct	6 ms	47708 KB	Output is correct
12	Correct	6 ms	47792 KB	Output is correct
13	Correct	7 ms	47784 KB	Output is correct
14	Correct	6 ms	47708 KB	Output is correct
15	Correct	6 ms	47704 KB	Output is correct
16	Correct	7 ms	47764 KB	Output is correct
17	Correct	6 ms	47960 KB	Output is correct
18	Correct	6 ms	47960 KB	Output is correct
19	Correct	10 ms	49752 KB	Output is correct
20	Correct	8 ms	47704 KB	Output is correct
21	Correct	10 ms	50268 KB	Output is correct
22	Correct	10 ms	49756 KB	Output is correct
23	Correct	10 ms	49756 KB	Output is correct
24	Correct	10 ms	49852 KB	Output is correct
25	Correct	10 ms	49756 KB	Output is correct
26	Correct	10 ms	49756 KB	Output is correct
27	Correct	10 ms	49756 KB	Output is correct
28	Correct	9 ms	49916 KB	Output is correct
29	Correct	15 ms	50012 KB	Output is correct
30	Correct	11 ms	49752 KB	Output is correct
31	Correct	14 ms	51036 KB	Output is correct
32	Correct	16 ms	49920 KB	Output is correct
33	Correct	15 ms	49756 KB	Output is correct
34	Correct	12 ms	49756 KB	Output is correct
35	Correct	13 ms	49756 KB	Output is correct
36	Correct	15 ms	50016 KB	Output is correct
37	Correct	15 ms	49756 KB	Output is correct
38	Correct	15 ms	49756 KB	Output is correct
39	Correct	87 ms	60352 KB	Output is correct
40	Correct	16 ms	49756 KB	Output is correct
41	Correct	15 ms	49752 KB	Output is correct
42	Correct	18 ms	49756 KB	Output is correct
43	Correct	17 ms	49752 KB	Output is correct
44	Correct	45 ms	53852 KB	Output is correct
45	Correct	46 ms	53852 KB	Output is correct
46	Correct	86 ms	72672 KB	Output is correct
47	Correct	94 ms	60192 KB	Output is correct
48	Correct	84 ms	59996 KB	Output is correct
49	Correct	63 ms	60144 KB	Output is correct
50	Correct	66 ms	59996 KB	Output is correct
51	Correct	101 ms	60636 KB	Output is correct
52	Correct	102 ms	60108 KB	Output is correct
53	Correct	86 ms	60124 KB	Output is correct
54	Correct	6 ms	47708 KB	Output is correct
55	Correct	7 ms	47708 KB	Output is correct
56	Correct	6 ms	47828 KB	Output is correct
57	Correct	7 ms	47708 KB	Output is correct
58	Correct	7 ms	47708 KB	Output is correct
59	Incorrect	6 ms	47708 KB	Output isn't correct
60	Halted	0 ms	0 KB	-

Subtask #8
0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	47708 KB	Output is correct
2	Correct	7 ms	47768 KB	Output is correct
3	Correct	7 ms	47832 KB	Output is correct
4	Correct	6 ms	47708 KB	Output is correct
5	Correct	6 ms	47832 KB	Output is correct
6	Correct	6 ms	47704 KB	Output is correct
7	Correct	7 ms	47708 KB	Output is correct
8	Correct	6 ms	47800 KB	Output is correct
9	Correct	6 ms	47708 KB	Output is correct
10	Correct	7 ms	47960 KB	Output is correct
11	Correct	6 ms	47708 KB	Output is correct
12	Correct	6 ms	47792 KB	Output is correct
13	Correct	7 ms	47784 KB	Output is correct
14	Correct	6 ms	47708 KB	Output is correct
15	Correct	6 ms	47704 KB	Output is correct
16	Correct	7 ms	47764 KB	Output is correct
17	Correct	6 ms	47960 KB	Output is correct
18	Correct	6 ms	47960 KB	Output is correct
19	Correct	10 ms	49752 KB	Output is correct
20	Correct	8 ms	47704 KB	Output is correct
21	Correct	10 ms	50268 KB	Output is correct
22	Correct	10 ms	49756 KB	Output is correct
23	Correct	10 ms	49756 KB	Output is correct
24	Correct	10 ms	49852 KB	Output is correct
25	Correct	10 ms	49756 KB	Output is correct
26	Correct	10 ms	49756 KB	Output is correct
27	Correct	10 ms	49756 KB	Output is correct
28	Correct	9 ms	49916 KB	Output is correct
29	Correct	15 ms	50012 KB	Output is correct
30	Correct	11 ms	49752 KB	Output is correct
31	Correct	14 ms	51036 KB	Output is correct
32	Correct	16 ms	49920 KB	Output is correct
33	Correct	15 ms	49756 KB	Output is correct
34	Correct	12 ms	49756 KB	Output is correct
35	Correct	13 ms	49756 KB	Output is correct
36	Correct	15 ms	50016 KB	Output is correct
37	Correct	15 ms	49756 KB	Output is correct
38	Correct	15 ms	49756 KB	Output is correct
39	Correct	87 ms	60352 KB	Output is correct
40	Correct	16 ms	49756 KB	Output is correct
41	Correct	15 ms	49752 KB	Output is correct
42	Correct	18 ms	49756 KB	Output is correct
43	Correct	17 ms	49752 KB	Output is correct
44	Correct	45 ms	53852 KB	Output is correct
45	Correct	46 ms	53852 KB	Output is correct
46	Correct	86 ms	72672 KB	Output is correct
47	Correct	94 ms	60192 KB	Output is correct
48	Correct	84 ms	59996 KB	Output is correct
49	Correct	63 ms	60144 KB	Output is correct
50	Correct	66 ms	59996 KB	Output is correct
51	Correct	101 ms	60636 KB	Output is correct
52	Correct	102 ms	60108 KB	Output is correct
53	Correct	86 ms	60124 KB	Output is correct
54	Correct	6 ms	47708 KB	Output is correct
55	Correct	7 ms	47708 KB	Output is correct
56	Correct	6 ms	47828 KB	Output is correct
57	Correct	7 ms	47708 KB	Output is correct
58	Correct	7 ms	47708 KB	Output is correct
59	Incorrect	6 ms	47708 KB	Output isn't correct
60	Halted	0 ms	0 KB	-

Submission #924153

Compilation message