oj.uz

답안 #960492

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
960492 2024-04-10T14:17:06 Z htphong0909 Mecho (IOI09_mecho) C++17
4 / 100
 109 ms 8700 KB 
#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)/s && 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=100,ans=-1;
    while(l<=r) {
        int m=(l+r)/2;
        if(bfs(m)) {
            ans=m;
            l=m+1;
        }
        else {
            r=m-1;
        }
    }
    cout << -1;
    return 0;
}

Compilation message

mecho.cpp: In function 'int main()':
mecho.cpp:69:19: warning: variable 'ans' set but not used [-Wunused-but-set-variable]
   69 |     int l=0,r=100,ans=-1;
      |                   ^~~

Subtask #1
4.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2396 KB Output isn't correct
2 Incorrect 1 ms 2396 KB Output isn't correct
3 Incorrect 1 ms 2552 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 Incorrect 1 ms 2396 KB Output isn't correct
7 Incorrect 44 ms 7840 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 2396 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 2648 KB Output is correct
15 Incorrect 1 ms 2508 KB Output isn't correct
16 Incorrect 1 ms 2392 KB Output isn't correct
17 Incorrect 2 ms 2396 KB Output isn't correct
18 Incorrect 1 ms 2508 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 2648 KB Output isn't correct
24 Incorrect 1 ms 2648 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 2652 KB Output isn't correct
32 Incorrect 1 ms 2772 KB Output isn't correct
33 Incorrect 8 ms 5980 KB Output isn't correct
34 Incorrect 9 ms 6468 KB Output isn't correct
35 Incorrect 11 ms 5980 KB Output isn't correct
36 Incorrect 8 ms 6236 KB Output isn't correct
37 Incorrect 11 ms 6236 KB Output isn't correct
38 Incorrect 14 ms 6204 KB Output isn't correct
39 Incorrect 10 ms 6644 KB Output isn't correct
40 Incorrect 13 ms 6508 KB Output isn't correct
41 Incorrect 17 ms 6492 KB Output isn't correct
42 Incorrect 13 ms 6748 KB Output isn't correct
43 Incorrect 16 ms 6876 KB Output isn't correct
44 Incorrect 21 ms 6748 KB Output isn't correct
45 Incorrect 15 ms 7004 KB Output isn't correct
46 Incorrect 20 ms 7004 KB Output isn't correct
47 Incorrect 27 ms 7124 KB Output isn't correct
48 Incorrect 18 ms 7260 KB Output isn't correct
49 Incorrect 24 ms 7260 KB Output isn't correct
50 Incorrect 31 ms 7268 KB Output isn't correct
51 Incorrect 20 ms 7596 KB Output isn't correct
52 Incorrect 28 ms 7516 KB Output isn't correct
53 Incorrect 43 ms 7616 KB Output isn't correct
54 Incorrect 23 ms 7684 KB Output isn't correct
55 Incorrect 31 ms 7772 KB Output isn't correct
56 Incorrect 44 ms 7772 KB Output isn't correct
57 Incorrect 28 ms 8028 KB Output isn't correct
58 Incorrect 35 ms 7800 KB Output isn't correct
59 Incorrect 45 ms 8212 KB Output isn't correct
60 Incorrect 30 ms 8160 KB Output isn't correct
61 Incorrect 42 ms 8020 KB Output isn't correct
62 Incorrect 53 ms 8284 KB Output isn't correct
63 Incorrect 69 ms 8252 KB Output isn't correct
64 Incorrect 106 ms 8116 KB Output isn't correct
65 Incorrect 109 ms 8108 KB Output isn't correct
66 Incorrect 84 ms 8044 KB Output isn't correct
67 Correct 62 ms 8272 KB Output is correct
68 Incorrect 38 ms 8272 KB Output isn't correct
69 Incorrect 28 ms 8028 KB Output isn't correct
70 Incorrect 26 ms 8320 KB Output isn't correct
71 Incorrect 26 ms 8276 KB Output isn't correct
72 Incorrect 35 ms 8284 KB Output isn't correct
73 Incorrect 30 ms 8532 KB Output isn't correct
74 Incorrect 40 ms 8500 KB Output isn't correct
75 Incorrect 37 ms 8532 KB Output isn't correct
76 Incorrect 35 ms 8312 KB Output isn't correct
77 Incorrect 39 ms 8572 KB Output isn't correct
78 Correct 39 ms 8480 KB Output is correct
79 Incorrect 40 ms 8540 KB Output isn't correct
80 Incorrect 35 ms 8284 KB Output isn't correct
81 Incorrect 39 ms 8284 KB Output isn't correct
82 Incorrect 37 ms 8284 KB Output isn't correct
83 Incorrect 46 ms 8284 KB Output isn't correct
84 Incorrect 39 ms 8276 KB Output isn't correct
85 Incorrect 42 ms 8480 KB Output isn't correct
86 Incorrect 39 ms 8700 KB Output isn't correct
87 Incorrect 43 ms 8508 KB Output isn't correct
88 Incorrect 45 ms 8280 KB Output isn't correct
89 Incorrect 43 ms 8284 KB Output isn't correct
90 Incorrect 51 ms 8444 KB Output isn't correct
91 Incorrect 43 ms 8272 KB Output isn't correct
92 Incorrect 46 ms 8272 KB Output isn't correct