답안 #960612

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
960612	2024-04-10T17:04:10 Z	LmaoLmao	Mecho (IOI09_mecho)	C++14	40 / 100	129 ms	15644 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] = 1e18;
    ll l=1,r=10000000,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

40.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	1 ms	2392 KB	Output isn't correct
2	Incorrect	1 ms	2396 KB	Output isn't 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	Correct	53 ms	15320 KB	Output is correct
8	Correct	1 ms	2392 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2652 KB	Output is 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	Correct	1 ms	2396 KB	Output is correct
17	Incorrect	1 ms	2392 KB	Output isn't correct
18	Correct	1 ms	2648 KB	Output is correct
19	Incorrect	1 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	2648 KB	Output isn't correct
26	Correct	1 ms	2648 KB	Output is correct
27	Incorrect	1 ms	2652 KB	Output isn't correct
28	Correct	1 ms	2848 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	2908 KB	Output isn't correct
32	Correct	1 ms	2908 KB	Output is correct
33	Incorrect	4 ms	6452 KB	Output isn't correct
34	Correct	7 ms	6744 KB	Output is correct
35	Correct	13 ms	7004 KB	Output is correct
36	Incorrect	5 ms	6732 KB	Output isn't correct
37	Correct	5 ms	7220 KB	Output is correct
38	Correct	19 ms	7516 KB	Output is correct
39	Incorrect	6 ms	9308 KB	Output isn't correct
40	Correct	6 ms	9564 KB	Output is correct
41	Correct	22 ms	10076 KB	Output is correct
42	Incorrect	7 ms	9564 KB	Output isn't correct
43	Correct	7 ms	10076 KB	Output is correct
44	Correct	28 ms	10588 KB	Output is correct
45	Incorrect	9 ms	10244 KB	Output isn't correct
46	Correct	9 ms	10588 KB	Output is correct
47	Correct	36 ms	11100 KB	Output is correct
48	Incorrect	11 ms	10332 KB	Output isn't correct
49	Correct	9 ms	10844 KB	Output is correct
50	Correct	43 ms	11356 KB	Output is correct
51	Incorrect	11 ms	10588 KB	Output isn't correct
52	Correct	11 ms	11100 KB	Output is correct
53	Correct	52 ms	11872 KB	Output is correct
54	Incorrect	13 ms	12892 KB	Output isn't correct
55	Correct	13 ms	13660 KB	Output is correct
56	Correct	59 ms	14172 KB	Output is correct
57	Incorrect	19 ms	13144 KB	Output isn't correct
58	Correct	15 ms	13916 KB	Output is correct
59	Correct	83 ms	14680 KB	Output is correct
60	Incorrect	14 ms	13400 KB	Output isn't correct
61	Correct	18 ms	14376 KB	Output is correct
62	Correct	129 ms	15104 KB	Output is correct
63	Incorrect	69 ms	15104 KB	Output isn't correct
64	Correct	112 ms	14936 KB	Output is correct
65	Correct	110 ms	15108 KB	Output is correct
66	Incorrect	101 ms	14940 KB	Output isn't correct
67	Correct	89 ms	15168 KB	Output is correct
68	Incorrect	42 ms	15200 KB	Output isn't correct
69	Correct	41 ms	14928 KB	Output is correct
70	Correct	37 ms	15168 KB	Output is correct
71	Correct	37 ms	15088 KB	Output is correct
72	Correct	24 ms	15068 KB	Output is correct
73	Correct	25 ms	15564 KB	Output is correct
74	Correct	49 ms	15644 KB	Output is correct
75	Correct	41 ms	15400 KB	Output is correct
76	Correct	51 ms	15452 KB	Output is correct
77	Correct	45 ms	15452 KB	Output is correct
78	Correct	45 ms	15600 KB	Output is correct
79	Correct	37 ms	15440 KB	Output is correct
80	Correct	46 ms	15532 KB	Output is correct
81	Correct	50 ms	15440 KB	Output is correct
82	Correct	47 ms	15448 KB	Output is correct
83	Incorrect	53 ms	15512 KB	Output isn't correct
84	Correct	44 ms	15456 KB	Output is correct
85	Correct	47 ms	15448 KB	Output is correct
86	Correct	45 ms	15452 KB	Output is correct
87	Correct	49 ms	15508 KB	Output is correct
88	Incorrect	48 ms	15192 KB	Output isn't correct
89	Correct	49 ms	15196 KB	Output is correct
90	Correct	55 ms	15416 KB	Output is correct
91	Correct	47 ms	15196 KB	Output is correct
92	Correct	47 ms	15196 KB	Output is correct