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답안 #1057769

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1057769 2024-08-14T05:46:20 Z 12345678 Mecho (IOI09_mecho) C++17
32 / 100
 87 ms 7024 KB 
#include <bits/stdc++.h>

using namespace std;

const int nx=805;

int n, s, mn[nx][nx], dx[4]={1, 0, 0, -1}, dy[4]={0, 1, -1, 0}, dp[nx][nx];
char mp[nx][nx];
pair<int, int> st, tg;
queue<pair<int, int>> q;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>s;
    for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) cin>>mp[i][j], mn[i][j]=1e9;
    for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) if (mp[i][j]=='M') st={i, j};
    for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) if (mp[i][j]=='H') q.push({i, j}), mn[i][j]=0;
    for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) if (mp[i][j]=='D') tg={i, j};
    while (!q.empty())
    {
        auto [x, y]=q.front();
        q.pop();
        for (int i=0; i<4; i++)
        {
            int cx=x+dx[i], cy=y+dy[i];
            if (cx<1||cx>n||cy<1||cy>n||mp[cx][cy]=='T'||mp[cx][cy]=='D') continue;
            if (mn[cx][cy]>mn[x][y]+1) mn[cx][cy]=mn[x][y]+1, q.push({cx, cy});
        }
    }
    int l=0, r=2*n;
    while (l<r)
    {
        int md=(l+r+1)/2;
        for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) dp[i][j]=1e9;
        if (mn[st.first][st.second]<=md)
        {
            r=md-1;
            continue;
        }
        dp[st.first][st.second]=0;
        q.push({st.first, st.second});
        while (!q.empty())
        {
            auto [x, y]=q.front();
            q.pop();
            for (int i=0; i<4; i++)
            {
                int cx=x+dx[i], cy=y+dy[i];
                if (cx<1||cx>n||cy<1||cy>n||mp[cx][cy]=='T'||mp[cx][cy]=='H') continue;
                if (dp[cx][cy]>dp[x][y]+1&&(md+(dp[x][y]+1)/s)<mn[cx][cy]) dp[cx][cy]=dp[x][y]+1, q.push({cx, cy});
            }
        }
        if (dp[tg.first][tg.second]!=1e9) l=md;
        else r=md-1;
    }
    if (l==0) cout<<-1;
    else cout<<l;
}

Subtask #1
32.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 0 ms 4444 KB Output is correct
4 Correct 0 ms 4560 KB Output is correct
5 Incorrect 0 ms 4444 KB Output isn't correct
6 Correct 0 ms 4444 KB Output is correct
7 Correct 43 ms 6880 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 0 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Incorrect 1 ms 4444 KB Output isn't correct
13 Incorrect 1 ms 4444 KB Output isn't correct
14 Correct 1 ms 4444 KB Output is correct
15 Incorrect 1 ms 4444 KB Output isn't correct
16 Incorrect 0 ms 4444 KB Output isn't correct
17 Incorrect 1 ms 4444 KB Output isn't correct
18 Incorrect 1 ms 4444 KB Output isn't correct
19 Incorrect 0 ms 4444 KB Output isn't correct
20 Incorrect 0 ms 4444 KB Output isn't correct
21 Incorrect 0 ms 4444 KB Output isn't correct
22 Incorrect 1 ms 4444 KB Output isn't correct
23 Incorrect 1 ms 4444 KB Output isn't correct
24 Incorrect 1 ms 4440 KB Output isn't correct
25 Incorrect 1 ms 4444 KB Output isn't correct
26 Incorrect 1 ms 4444 KB Output isn't correct
27 Incorrect 1 ms 4444 KB Output isn't correct
28 Incorrect 1 ms 4444 KB Output isn't correct
29 Incorrect 1 ms 4444 KB Output isn't correct
30 Incorrect 1 ms 4444 KB Output isn't correct
31 Incorrect 1 ms 4444 KB Output isn't correct
32 Incorrect 1 ms 4444 KB Output isn't correct
33 Incorrect 8 ms 4956 KB Output isn't correct
34 Incorrect 10 ms 4700 KB Output isn't correct
35 Correct 11 ms 4700 KB Output is correct
36 Incorrect 9 ms 4960 KB Output isn't correct
37 Incorrect 12 ms 5060 KB Output isn't correct
38 Correct 15 ms 4904 KB Output is correct
39 Incorrect 13 ms 5208 KB Output isn't correct
40 Incorrect 15 ms 5212 KB Output isn't correct
41 Correct 20 ms 5212 KB Output is correct
42 Incorrect 15 ms 5212 KB Output isn't correct
43 Incorrect 18 ms 5456 KB Output isn't correct
44 Correct 23 ms 5212 KB Output is correct
45 Incorrect 19 ms 5464 KB Output isn't correct
46 Incorrect 29 ms 5468 KB Output isn't correct
47 Correct 28 ms 5468 KB Output is correct
48 Incorrect 21 ms 5884 KB Output isn't correct
49 Incorrect 28 ms 5724 KB Output isn't correct
50 Correct 33 ms 5880 KB Output is correct
51 Incorrect 26 ms 6100 KB Output isn't correct
52 Incorrect 35 ms 5980 KB Output isn't correct
53 Correct 42 ms 5980 KB Output is correct
54 Incorrect 30 ms 6236 KB Output isn't correct
55 Incorrect 42 ms 6236 KB Output isn't correct
56 Correct 60 ms 6236 KB Output is correct
57 Incorrect 35 ms 6492 KB Output isn't correct
58 Incorrect 45 ms 6492 KB Output isn't correct
59 Correct 58 ms 6492 KB Output is correct
60 Incorrect 38 ms 6744 KB Output isn't correct
61 Incorrect 51 ms 6748 KB Output isn't correct
62 Correct 63 ms 6748 KB Output is correct
63 Incorrect 61 ms 6748 KB Output isn't correct
64 Correct 84 ms 6752 KB Output is correct
65 Correct 87 ms 6748 KB Output is correct
66 Correct 73 ms 6748 KB Output is correct
67 Correct 72 ms 6744 KB Output is correct
68 Incorrect 32 ms 6744 KB Output isn't correct
69 Correct 31 ms 6744 KB Output is correct
70 Correct 25 ms 6748 KB Output is correct
71 Correct 24 ms 6748 KB Output is correct
72 Correct 21 ms 6816 KB Output is correct
73 Correct 23 ms 7004 KB Output is correct
74 Correct 32 ms 7004 KB Output is correct
75 Correct 42 ms 7000 KB Output is correct
76 Correct 33 ms 7004 KB Output is correct
77 Correct 41 ms 7008 KB Output is correct
78 Correct 39 ms 7004 KB Output is correct
79 Correct 40 ms 7004 KB Output is correct
80 Correct 46 ms 7004 KB Output is correct
81 Correct 40 ms 7024 KB Output is correct
82 Correct 40 ms 7024 KB Output is correct
83 Incorrect 40 ms 6744 KB Output isn't correct
84 Correct 41 ms 6748 KB Output is correct
85 Correct 49 ms 6748 KB Output is correct
86 Correct 43 ms 6904 KB Output is correct
87 Correct 46 ms 6980 KB Output is correct
88 Incorrect 47 ms 6748 KB Output isn't correct
89 Correct 45 ms 6740 KB Output is correct
90 Correct 60 ms 6748 KB Output is correct
91 Correct 47 ms 6928 KB Output is correct
92 Correct 45 ms 6928 KB Output is correct