답안 #960496

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
960496	2024-04-10T14:25:58 Z	LmaoLmao	Mecho (IOI09_mecho)	C++14	30 / 100	116 ms	8280 KB

mecho

#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
 
using ll = long long;
using ii = pair<int, int>;
 
const int N = 1e6+5;
const int INF = 1e9;

int d[1000][1000],m[1000][1000],n,s;
char a[1000][1000];
int dx[4]={1,0,0,-1};
int dy[4]={0,1,-1,0};
ii pos,h;

bool bfs(int x) {
    queue<ii> q;
    q.push(pos);
    for(int i=0;i<n;i++) {
        for(int j=0;j<n;j++) {
            m[i][j]=0;
        }
    }
    while(!q.empty()) {
        ii u=q.front();
        q.pop();
        for(int i=0;i<4;i++) {
            ii v={u.fi+dx[i],u.se+dy[i]};
            if(v.fi<0 || v.fi>=n || v.se<0 || v.se>=n) continue;
            if(m[v.fi][v.se]==0 && a[v.fi][v.se]!='T' && 
            d[v.fi][v.se]-x>=(m[u.fi][u.se]*1.0+1)/(s*1.0) && a[v.fi][v.se]!='M') {
                m[v.fi][v.se]=m[u.fi][u.se]+1;
                q.push(v);
            }
        }
    }
    if(m[h.fi][h.se]>0) return 1; else return 0;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    queue<ii> q;
    cin >> n >> s;
    for(int i=0;i<n;i++) {
        for(int j=0;j<n;j++) {
            cin >> a[i][j];
            if(a[i][j]=='H') {
                q.push({i,j});
            }
            if(a[i][j]=='M') pos={i,j};
            if(a[i][j]=='D') h={i,j};
        }
    }
    while(!q.empty()) {
        ii u=q.front();
        q.pop();
        for(int i=0;i<4;i++) {
            ii v={u.fi+dx[i],u.se+dy[i]};
            if(v.fi<0 || v.fi>=n || v.se<0 || v.se>=n) continue;
            if(d[v.fi][v.se]==0 && a[v.fi][v.se]!='T' && a[v.fi][v.se]!='H') {
                d[v.fi][v.se]=d[u.fi][u.se]+1;
                q.push(v);
            }
        }
    }
    int l=0,r=1000000,ans=-1;
    while(l<=r) {
        int m=(l+r)/2;
        if(bfs(m)) {
            ans=m;
            l=m+1;
        }
        else {
            r=m-1;
        }
    }
    cout << ans;
    return 0;
}

Subtask #1

30.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	1 ms	2392 KB	Output isn't correct
2	Incorrect	1 ms	2648 KB	Output isn't correct
3	Incorrect	1 ms	2396 KB	Output isn't correct
4	Incorrect	2 ms	2396 KB	Output isn't correct
5	Correct	1 ms	2392 KB	Output is correct
6	Incorrect	1 ms	2396 KB	Output isn't correct
7	Incorrect	53 ms	7972 KB	Output isn't correct
8	Incorrect	1 ms	2648 KB	Output isn't correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2392 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Incorrect	1 ms	2652 KB	Output isn't correct
13	Incorrect	1 ms	2648 KB	Output isn't correct
14	Correct	1 ms	2648 KB	Output is correct
15	Incorrect	2 ms	2392 KB	Output isn't correct
16	Correct	1 ms	2396 KB	Output is correct
17	Incorrect	1 ms	2396 KB	Output isn't correct
18	Correct	1 ms	2396 KB	Output is correct
19	Incorrect	2 ms	2652 KB	Output isn't correct
20	Correct	1 ms	2652 KB	Output is correct
21	Incorrect	1 ms	2652 KB	Output isn't correct
22	Correct	1 ms	2652 KB	Output is correct
23	Incorrect	1 ms	2652 KB	Output isn't correct
24	Correct	1 ms	2652 KB	Output is correct
25	Incorrect	1 ms	2652 KB	Output isn't correct
26	Correct	1 ms	2648 KB	Output is correct
27	Incorrect	1 ms	2648 KB	Output isn't correct
28	Correct	1 ms	2652 KB	Output is correct
29	Incorrect	1 ms	2652 KB	Output isn't correct
30	Correct	1 ms	2652 KB	Output is correct
31	Incorrect	1 ms	2652 KB	Output isn't correct
32	Correct	1 ms	2648 KB	Output is correct
33	Incorrect	4 ms	5980 KB	Output isn't correct
34	Correct	4 ms	5976 KB	Output is correct
35	Correct	13 ms	5980 KB	Output is correct
36	Incorrect	5 ms	6236 KB	Output isn't correct
37	Correct	4 ms	6236 KB	Output is correct
38	Correct	17 ms	6236 KB	Output is correct
39	Incorrect	8 ms	6492 KB	Output isn't correct
40	Correct	6 ms	6280 KB	Output is correct
41	Correct	21 ms	6492 KB	Output is correct
42	Incorrect	7 ms	6492 KB	Output isn't correct
43	Correct	7 ms	6492 KB	Output is correct
44	Correct	27 ms	6492 KB	Output is correct
45	Incorrect	7 ms	6748 KB	Output isn't correct
46	Correct	7 ms	6748 KB	Output is correct
47	Correct	37 ms	6748 KB	Output is correct
48	Incorrect	9 ms	7000 KB	Output isn't correct
49	Correct	9 ms	7004 KB	Output is correct
50	Correct	39 ms	7004 KB	Output is correct
51	Incorrect	11 ms	7540 KB	Output isn't correct
52	Correct	14 ms	7256 KB	Output is correct
53	Correct	67 ms	7276 KB	Output is correct
54	Incorrect	12 ms	7256 KB	Output isn't correct
55	Correct	15 ms	7340 KB	Output is correct
56	Correct	57 ms	7472 KB	Output is correct
57	Incorrect	13 ms	7516 KB	Output isn't correct
58	Correct	12 ms	7456 KB	Output is correct
59	Correct	69 ms	7684 KB	Output is correct
60	Incorrect	17 ms	8028 KB	Output isn't correct
61	Correct	17 ms	7768 KB	Output is correct
62	Correct	71 ms	7772 KB	Output is correct
63	Correct	75 ms	7860 KB	Output is correct
64	Correct	116 ms	7772 KB	Output is correct
65	Correct	112 ms	7856 KB	Output is correct
66	Incorrect	99 ms	7860 KB	Output isn't correct
67	Correct	77 ms	7772 KB	Output is correct
68	Correct	34 ms	7888 KB	Output is correct
69	Correct	37 ms	7896 KB	Output is correct
70	Correct	30 ms	7772 KB	Output is correct
71	Correct	26 ms	7772 KB	Output is correct
72	Incorrect	25 ms	7908 KB	Output isn't correct
73	Incorrect	24 ms	8140 KB	Output isn't correct
74	Correct	37 ms	8016 KB	Output is correct
75	Correct	42 ms	7888 KB	Output is correct
76	Correct	36 ms	8148 KB	Output is correct
77	Correct	38 ms	8028 KB	Output is correct
78	Correct	48 ms	8124 KB	Output is correct
79	Correct	34 ms	8024 KB	Output is correct
80	Correct	41 ms	8108 KB	Output is correct
81	Correct	42 ms	8280 KB	Output is correct
82	Correct	33 ms	8028 KB	Output is correct
83	Correct	48 ms	8072 KB	Output is correct
84	Correct	42 ms	8028 KB	Output is correct
85	Correct	47 ms	8060 KB	Output is correct
86	Correct	48 ms	8024 KB	Output is correct
87	Correct	48 ms	8068 KB	Output is correct
88	Correct	47 ms	8024 KB	Output is correct
89	Correct	46 ms	8028 KB	Output is correct
90	Correct	48 ms	8024 KB	Output is correct
91	Correct	51 ms	8024 KB	Output is correct
92	Correct	61 ms	8028 KB	Output is correct