답안 #960601

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
960601	2024-04-10T16:44:07 Z	htphong0909	Mecho (IOI09_mecho)	C++17	10 / 100	39 ms	15672 KB

mecho

#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
 
using ll = long long;
using ii = pair<ll, ll>;
 
const int N = 1e6+5;
const int INF = 1e9;
 
ll d[1000][1000],m[1000][1000],n,s;
char a[1000][1000];
ll dx[4]={1,0,0,-1};
ll dy[4]={0,1,-1,0};
ii pos,h;
 
bool bfs(ll x) {
    if (d[pos.fi][pos.se] - x * s <= 0) return 0;
    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*s>m[u.fi][u.se]+1 && 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' && a[v.fi][v.se]!='D') {
                d[v.fi][v.se]=d[u.fi][u.se]+s;
                q.push(v);
            }
        }
    }
    d[h.fi][h.se] = (int)1e18;
    ll l=1,r=1,ans=-1;
    while(l<=r) {
        ll m=(l+r)/2;
        if(bfs(m)) {
            ans=m;
            l=m+1;
        }
        else {
            r=m-1;
        }
    }
    cout << ans;
    return 0;
}

Subtask #1

10.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Incorrect	1 ms	2396 KB	Output isn't correct
4	Incorrect	1 ms	2396 KB	Output isn't correct
5	Incorrect	1 ms	2396 KB	Output isn't correct
6	Correct	1 ms	2396 KB	Output is correct
7	Incorrect	25 ms	15196 KB	Output isn't correct
8	Correct	1 ms	2396 KB	Output is correct
9	Incorrect	1 ms	2396 KB	Output isn't correct
10	Incorrect	1 ms	2396 KB	Output isn't correct
11	Incorrect	1 ms	2392 KB	Output isn't correct
12	Incorrect	1 ms	2652 KB	Output isn't correct
13	Incorrect	1 ms	2652 KB	Output isn't correct
14	Correct	1 ms	2652 KB	Output is correct
15	Incorrect	1 ms	2396 KB	Output isn't correct
16	Incorrect	2 ms	2396 KB	Output isn't correct
17	Incorrect	1 ms	2648 KB	Output isn't correct
18	Incorrect	1 ms	2396 KB	Output isn't correct
19	Incorrect	1 ms	2652 KB	Output isn't correct
20	Incorrect	1 ms	2652 KB	Output isn't correct
21	Incorrect	1 ms	2652 KB	Output isn't correct
22	Incorrect	1 ms	2652 KB	Output isn't correct
23	Incorrect	1 ms	2652 KB	Output isn't correct
24	Incorrect	1 ms	2652 KB	Output isn't correct
25	Incorrect	1 ms	2652 KB	Output isn't correct
26	Incorrect	1 ms	2652 KB	Output isn't correct
27	Incorrect	1 ms	2652 KB	Output isn't correct
28	Incorrect	1 ms	2652 KB	Output isn't correct
29	Incorrect	1 ms	2652 KB	Output isn't correct
30	Incorrect	1 ms	2652 KB	Output isn't correct
31	Incorrect	1 ms	2916 KB	Output isn't correct
32	Incorrect	1 ms	2908 KB	Output isn't correct
33	Incorrect	4 ms	6492 KB	Output isn't correct
34	Incorrect	5 ms	6748 KB	Output isn't correct
35	Incorrect	8 ms	7128 KB	Output isn't correct
36	Incorrect	5 ms	6748 KB	Output isn't correct
37	Incorrect	8 ms	7260 KB	Output isn't correct
38	Incorrect	7 ms	7516 KB	Output isn't correct
39	Incorrect	6 ms	9308 KB	Output isn't correct
40	Incorrect	6 ms	9564 KB	Output isn't correct
41	Incorrect	13 ms	10076 KB	Output isn't correct
42	Incorrect	7 ms	9612 KB	Output isn't correct
43	Incorrect	8 ms	10076 KB	Output isn't correct
44	Incorrect	12 ms	10588 KB	Output isn't correct
45	Incorrect	8 ms	9820 KB	Output isn't correct
46	Incorrect	9 ms	10588 KB	Output isn't correct
47	Incorrect	17 ms	11100 KB	Output isn't correct
48	Incorrect	10 ms	10332 KB	Output isn't correct
49	Incorrect	11 ms	10840 KB	Output isn't correct
50	Incorrect	14 ms	11352 KB	Output isn't correct
51	Incorrect	11 ms	10452 KB	Output isn't correct
52	Incorrect	12 ms	11100 KB	Output isn't correct
53	Incorrect	16 ms	11868 KB	Output isn't correct
54	Incorrect	13 ms	12892 KB	Output isn't correct
55	Incorrect	14 ms	13660 KB	Output isn't correct
56	Incorrect	19 ms	14348 KB	Output isn't correct
57	Incorrect	15 ms	13148 KB	Output isn't correct
58	Incorrect	15 ms	13864 KB	Output isn't correct
59	Incorrect	23 ms	14684 KB	Output isn't correct
60	Incorrect	16 ms	13400 KB	Output isn't correct
61	Incorrect	18 ms	14172 KB	Output isn't correct
62	Incorrect	23 ms	15064 KB	Output isn't correct
63	Incorrect	28 ms	14936 KB	Output isn't correct
64	Incorrect	36 ms	14928 KB	Output isn't correct
65	Incorrect	35 ms	14940 KB	Output isn't correct
66	Incorrect	39 ms	15124 KB	Output isn't correct
67	Correct	28 ms	15140 KB	Output is correct
68	Incorrect	28 ms	14936 KB	Output isn't correct
69	Incorrect	34 ms	14936 KB	Output isn't correct
70	Incorrect	33 ms	15148 KB	Output isn't correct
71	Incorrect	25 ms	14940 KB	Output isn't correct
72	Incorrect	27 ms	14940 KB	Output isn't correct
73	Correct	24 ms	15452 KB	Output is correct
74	Incorrect	33 ms	15672 KB	Output isn't correct
75	Incorrect	24 ms	15400 KB	Output isn't correct
76	Incorrect	26 ms	15512 KB	Output isn't correct
77	Incorrect	25 ms	15448 KB	Output isn't correct
78	Correct	26 ms	15584 KB	Output is correct
79	Incorrect	32 ms	15444 KB	Output isn't correct
80	Incorrect	30 ms	15532 KB	Output isn't correct
81	Incorrect	24 ms	15540 KB	Output isn't correct
82	Incorrect	25 ms	15444 KB	Output isn't correct
83	Incorrect	24 ms	15532 KB	Output isn't correct
84	Incorrect	31 ms	15500 KB	Output isn't correct
85	Incorrect	26 ms	15552 KB	Output isn't correct
86	Incorrect	27 ms	15416 KB	Output isn't correct
87	Incorrect	24 ms	15452 KB	Output isn't correct
88	Incorrect	24 ms	15196 KB	Output isn't correct
89	Incorrect	31 ms	15196 KB	Output isn't correct
90	Incorrect	29 ms	15180 KB	Output isn't correct
91	Incorrect	28 ms	15196 KB	Output isn't correct
92	Incorrect	27 ms	15404 KB	Output isn't correct