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
#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;
}
# 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