답안 #1106324

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1106324	2024-10-30T01:22:29 Z	lufychop	Mecho (IOI09_mecho)	C++14	69 / 100	118 ms	23900 KB

mecho

#include <bits/stdc++.h>

using namespace std;

bool ch=false;
long long n,s,si,sj,ei,ej;
long long a[1000][1000];
long long b[1000][1000];
long long c[1000][1000];
long long x[4]={0,0,-1,1};
long long y[4]={-1,1,0,0};

bool check(long long t)
{
	queue<pair<pair<long long,long long>,pair<long long,long long> > > h;
	h.push({{0,t},{si,sj}});
	c[si][sj]=t;
	while(!h.empty())
	{
		long long t0=h.front().first.first;
		long long t1=h.front().first.second;
		long long t2=h.front().second.first;
		long long t3=h.front().second.second;
		h.pop();
		if(t2==ei && t3==ej)
		{
			while(!h.empty())
			{
				h.pop();
			}
			return true;
		}
		for(int i=0;i<4;i++)
		{
			if(-1<a[t2+x[i]][t3+y[i]] && a[t2+x[i]][t3+y[i]]<=t1+(t0+1)/s)
			{
				continue;
			}
			if(c[t2+x[i]][t3+y[i]]>t1+(t0+1)/s)
			{
				c[t2+x[i]][t3+y[i]]=t1+(t0+1)/s;
				h.push({{(t0+1)%s,t1+(t0+1)/s},{t2+x[i],t3+y[i]}});
			}
		}
	}
	return false;
}

int main(void)
{
	queue<pair<long long,pair<long long,long long> > > h;
	cin>>n>>s;
	for(int i=1;i<=n;i++)
	{
		string tt;
		cin>>tt;
		for(int j=1;j<=n;j++)
		{
			if(tt[j-1]=='T')
			{
				a[i][j]=-1;
				b[i][j]=-1;
			}
			else
			{
				a[i][j]=INT_MAX;
				b[i][j]=INT_MAX;
			}
			if(tt[j-1]=='M')
			{
				si=i;
				sj=j;
			}
			else if(tt[j-1]=='D')
			{
				a[i][j]=-1;
				ei=i;
				ej=j;
			}
			else if(tt[j-1]=='H')
			{
				h.push({0,{i,j}});
				a[i][j]=0;
			}
		}
	}
	while(!h.empty())
	{
		long long t1=h.front().first;
		long long t2=h.front().second.first;
		long long t3=h.front().second.second;
		h.pop();
		for(int i=0;i<4;i++)
		{
			if(a[t2+x[i]][t3+y[i]]>t1+1)
			{
				a[t2+x[i]][t3+y[i]]=t1+1;
				h.push({t1+1,{t2+x[i],t3+y[i]}});
			}
		}
	}
	// for(int i=0;i<=n;i++)
	// {
	// 	for(int j=0;j<=n;j++)
	// 	{
	// 		if(a[i][j]==INT_MAX)
	// 		{
	// 			cout<<"-1 ";
	// 			continue;
	// 		}
	// 		cout<<a[i][j]<<" ";
	// 	}
	// 	cout<<"\n";
	// }
	long long l=1,r=1000000;
	while(l<=r)
	{
		long long mid=(l+r)/2;
		for(int i=0;i<=n+1;i++)
		{
			for(int j=0;j<=n+1;j++)
			{
				c[i][j]=b[i][j];
			}
		}
		if(check(mid))
		{
			l=mid+1;
			ch=true;
		}
		else
		{
			r=mid-1;
		}
	}
	// for(int i=0;i<=n;i++)
	// {
	// 	for(int j=0;j<=n;j++)
	// 	{
	// 		if(c[i][j]==INT_MAX)
	// 		{
	// 			cout<<"-1 ";
	// 			continue;
	// 		}
	// 		cout<<c[i][j]<<" ";
	// 	}
	// 	cout<<"\n";
	// }
	if(ch)
	{
		cout<<r;
	}
	else
	{
		cout<<-1;
	}
	return 0;
}
/*
7 3
TTTTTTT
TGGGGGT
TGGGGGT
MGGGGGD
TGGGGGT
TGGGGGT
THHHHHT

TTTTTTT
T55555T
T44444T
M33333D
T22222T
T11111T
THHHHHT

TTTTTTT
T55555T
T44444T
M111222
T22222T
T11111T
THHHHHT
*/

Subtask #1

69.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4432 KB	Output is correct
2	Correct	1 ms	4432 KB	Output is correct
3	Correct	1 ms	4604 KB	Output is correct
4	Correct	1 ms	4432 KB	Output is correct
5	Incorrect	1 ms	4432 KB	Output isn't correct
6	Correct	1 ms	4608 KB	Output is correct
7	Correct	60 ms	23376 KB	Output is correct
8	Correct	1 ms	4432 KB	Output is correct
9	Correct	1 ms	4432 KB	Output is correct
10	Correct	1 ms	4432 KB	Output is correct
11	Correct	1 ms	4432 KB	Output is correct
12	Incorrect	1 ms	6480 KB	Output isn't correct
13	Incorrect	1 ms	6480 KB	Output isn't correct
14	Correct	1 ms	6736 KB	Output is correct
15	Correct	1 ms	4432 KB	Output is correct
16	Correct	1 ms	4432 KB	Output is correct
17	Correct	1 ms	6480 KB	Output is correct
18	Correct	1 ms	6480 KB	Output is correct
19	Correct	1 ms	6480 KB	Output is correct
20	Correct	1 ms	6480 KB	Output is correct
21	Correct	1 ms	6600 KB	Output is correct
22	Correct	1 ms	6480 KB	Output is correct
23	Correct	2 ms	6480 KB	Output is correct
24	Correct	1 ms	6480 KB	Output is correct
25	Correct	1 ms	6480 KB	Output is correct
26	Correct	1 ms	6480 KB	Output is correct
27	Correct	2 ms	6480 KB	Output is correct
28	Correct	1 ms	6480 KB	Output is correct
29	Correct	1 ms	6480 KB	Output is correct
30	Correct	1 ms	6480 KB	Output is correct
31	Correct	1 ms	8528 KB	Output is correct
32	Correct	1 ms	8528 KB	Output is correct
33	Correct	6 ms	14928 KB	Output is correct
34	Correct	7 ms	14928 KB	Output is correct
35	Correct	16 ms	14980 KB	Output is correct
36	Correct	7 ms	16976 KB	Output is correct
37	Correct	7 ms	16844 KB	Output is correct
38	Correct	27 ms	16976 KB	Output is correct
39	Correct	9 ms	16976 KB	Output is correct
40	Correct	9 ms	16976 KB	Output is correct
41	Correct	30 ms	16976 KB	Output is correct
42	Correct	10 ms	16988 KB	Output is correct
43	Correct	10 ms	16976 KB	Output is correct
44	Correct	33 ms	16976 KB	Output is correct
45	Correct	13 ms	19024 KB	Output is correct
46	Correct	12 ms	19024 KB	Output is correct
47	Correct	40 ms	19188 KB	Output is correct
48	Correct	15 ms	21072 KB	Output is correct
49	Correct	13 ms	21084 KB	Output is correct
50	Correct	46 ms	21168 KB	Output is correct
51	Correct	17 ms	23120 KB	Output is correct
52	Correct	18 ms	23120 KB	Output is correct
53	Correct	55 ms	23376 KB	Output is correct
54	Correct	19 ms	23120 KB	Output is correct
55	Correct	17 ms	22992 KB	Output is correct
56	Correct	63 ms	23120 KB	Output is correct
57	Correct	20 ms	23120 KB	Output is correct
58	Correct	18 ms	23192 KB	Output is correct
59	Correct	71 ms	23136 KB	Output is correct
60	Correct	22 ms	23120 KB	Output is correct
61	Correct	21 ms	23120 KB	Output is correct
62	Correct	81 ms	23020 KB	Output is correct
63	Incorrect	67 ms	23120 KB	Output isn't correct
64	Correct	118 ms	23200 KB	Output is correct
65	Correct	114 ms	23028 KB	Output is correct
66	Correct	97 ms	23120 KB	Output is correct
67	Correct	81 ms	23024 KB	Output is correct
68	Incorrect	37 ms	23120 KB	Output isn't correct
69	Correct	35 ms	23120 KB	Output is correct
70	Correct	37 ms	23252 KB	Output is correct
71	Correct	30 ms	23120 KB	Output is correct
72	Incorrect	30 ms	23104 KB	Output isn't correct
73	Incorrect	34 ms	23888 KB	Output isn't correct
74	Correct	46 ms	23888 KB	Output is correct
75	Correct	56 ms	23888 KB	Output is correct
76	Correct	51 ms	23880 KB	Output is correct
77	Correct	49 ms	23888 KB	Output is correct
78	Correct	53 ms	23744 KB	Output is correct
79	Correct	43 ms	23888 KB	Output is correct
80	Correct	47 ms	23824 KB	Output is correct
81	Correct	52 ms	23888 KB	Output is correct
82	Correct	48 ms	23900 KB	Output is correct
83	Incorrect	56 ms	23516 KB	Output isn't correct
84	Correct	49 ms	23632 KB	Output is correct
85	Correct	61 ms	23604 KB	Output is correct
86	Correct	58 ms	23756 KB	Output is correct
87	Correct	60 ms	23676 KB	Output is correct
88	Incorrect	55 ms	23632 KB	Output isn't correct
89	Correct	60 ms	23632 KB	Output is correct
90	Correct	66 ms	23660 KB	Output is correct
91	Correct	61 ms	23636 KB	Output is correct
92	Correct	59 ms	23644 KB	Output is correct