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Submission #442324

# Submission time Handle Problem Language Result Execution time Memory
442324 2021-07-07T12:56:39 Z Haidara Mecho (IOI09_mecho) C++17
58 / 100
 217 ms 7252 KB 
    /* * * * * * * * * *\
     * Author: Haidara *
     * LANG: C++17     *
     * PROB:           *
    \* * * * * * * * * */
    #include<bits/stdc++.h>
    #define fast ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    #define int long long
    #define rep(i,x,n) for(int i=x;i<(n);i++)
    #define FOR(i,n) rep(i,0,n)
    #define per(i,x,n) for(int i=x;i>(n);i--)
    #define ROF(i,x) for(int i=x;i>=0;i--)
    #define v(i) vector< i >
    #define p(i,j) pair< i , j >
    #define pii pair<int,int>
    #define m(i,j) map< i , j >
    #define um(i,j) unordered_map< i , j >
    #define pq(i) priority_queue< i >
    #define ff first
    #define all(x) x.begin(),x.end()
    #define ss second
    #define pp push_back
    using namespace std;
    void SIO(string name="")
    {
        if(name!="")
        {
            freopen((name+".in").c_str(),"r",stdin);
            freopen((name+".out").c_str(),"w",stdout);
        }
    }
    const int inf=1LL<<62LL;
    const int mod=1e9+7;
    const int maxn=808;
    char a[maxn][maxn];
    int n,jump;
    pii M,D;
    queue<pii>q;
    int dist[maxn][maxn],dx[] {-1,1,0,0},dy[] {0,0,1,-1};
    bool valid(int x,int y)
    {
        return x>=0&&y>=0&&x<n&&y<n&&a[x][y]!='T';
    }
    void solve()
    {
        while(q.size())
        {
            pii f=q.front();
            q.pop();
            FOR(i,4)
            {
                int x=f.ff+dx[i],y=f.ss+dy[i];
                if(valid(x,y)&&dist[f.ff][f.ss]+jump<dist[x][y])
                    dist[x][y]=dist[f.ff][f.ss]+jump,q.push({x,y});
            }
        }
    }
    bool check(int st)
    {
        queue<p(pii,int)>qq;
        qq.push({M,st*jump});
        bool vis[maxn][maxn];
        FOR(i,maxn)
        FOR(j,maxn)
        vis[i][j]=0;
        bool ret=0;
        vis[M.ff][M.ss]=1;
        while(qq.size())
        {
            pii f=qq.front().ff;
            int curr=qq.front().ss;
            qq.pop();
            if(f==D)
                ret=1;
            FOR(i,4)
            {
                int x=f.ff+dx[i],y=f.ss+dy[i];
                if(valid(x,y))
                {
                    if(dist[x][y]>curr+1&&!vis[x][y])
                        qq.push({{x,y},curr+1}),vis[x][y]=1;
                }
            }
        }
        return ret;
    }
    signed main()
    {
        SIO("");
        cin>>n>>jump;
        FOR(i,n){
          cin>>ws;
        FOR(j,n)
        {
            dist[i][j]=inf;
            cin>>a[i][j];
            if(a[i][j]=='M')
                M= {i,j};
            else if(a[i][j]=='D')
                D= {i,j};
            else if(a[i][j]=='H')
                q.push({i,j}),dist[i][j]=0;
        }}
        solve();
        int l=1,r=maxn*maxn*2,ans=-1;
        while(l<=r)
        {
            int mid=l+(r-l)/2;
            if(check(mid))
                ans=max(ans,mid),l=mid+1;
            else
                r=mid-1;
        }
        cout<<ans;
    }

Compilation message

mecho.cpp: In function 'void SIO(std::string)':
mecho.cpp:28:20: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |             freopen((name+".in").c_str(),"r",stdin);
      |             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mecho.cpp:29:20: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |             freopen((name+".out").c_str(),"w",stdout);
      |             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
58.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 844 KB Output is correct
2 Incorrect 1 ms 844 KB Output isn't correct
3 Correct 1 ms 844 KB Output is correct
4 Incorrect 1 ms 844 KB Output isn't correct
5 Incorrect 1 ms 972 KB Output isn't correct
6 Incorrect 1 ms 972 KB Output isn't correct
7 Incorrect 179 ms 6824 KB Output isn't correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 1 ms 972 KB Output is correct
10 Correct 1 ms 972 KB Output is correct
11 Correct 1 ms 972 KB Output is correct
12 Incorrect 2 ms 1228 KB Output isn't correct
13 Incorrect 2 ms 1100 KB Output isn't correct
14 Correct 2 ms 1228 KB Output is correct
15 Correct 1 ms 972 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 2 ms 972 KB Output is correct
18 Correct 1 ms 972 KB Output is correct
19 Correct 2 ms 1100 KB Output is correct
20 Correct 2 ms 972 KB Output is correct
21 Correct 2 ms 1100 KB Output is correct
22 Correct 2 ms 1100 KB Output is correct
23 Correct 2 ms 1100 KB Output is correct
24 Correct 2 ms 1100 KB Output is correct
25 Correct 2 ms 1228 KB Output is correct
26 Correct 2 ms 1228 KB Output is correct
27 Correct 2 ms 1228 KB Output is correct
28 Correct 2 ms 1228 KB Output is correct
29 Correct 2 ms 1228 KB Output is correct
30 Correct 2 ms 1228 KB Output is correct
31 Correct 2 ms 1228 KB Output is correct
32 Correct 2 ms 1228 KB Output is correct
33 Correct 12 ms 3404 KB Output is correct
34 Correct 12 ms 3420 KB Output is correct
35 Correct 36 ms 3404 KB Output is correct
36 Correct 15 ms 3780 KB Output is correct
37 Correct 16 ms 3724 KB Output is correct
38 Correct 48 ms 3768 KB Output is correct
39 Correct 18 ms 4044 KB Output is correct
40 Correct 18 ms 4032 KB Output is correct
41 Correct 59 ms 4140 KB Output is correct
42 Correct 22 ms 4384 KB Output is correct
43 Correct 24 ms 4460 KB Output is correct
44 Correct 76 ms 4552 KB Output is correct
45 Correct 27 ms 4740 KB Output is correct
46 Correct 33 ms 4736 KB Output is correct
47 Correct 94 ms 4844 KB Output is correct
48 Correct 30 ms 5184 KB Output is correct
49 Correct 29 ms 5060 KB Output is correct
50 Correct 109 ms 5200 KB Output is correct
51 Correct 34 ms 5508 KB Output is correct
52 Correct 36 ms 5508 KB Output is correct
53 Correct 133 ms 5556 KB Output is correct
54 Correct 42 ms 5804 KB Output is correct
55 Correct 43 ms 5784 KB Output is correct
56 Correct 159 ms 5908 KB Output is correct
57 Correct 47 ms 6248 KB Output is correct
58 Correct 51 ms 6208 KB Output is correct
59 Correct 184 ms 6192 KB Output is correct
60 Correct 72 ms 6512 KB Output is correct
61 Correct 58 ms 6596 KB Output is correct
62 Correct 214 ms 6552 KB Output is correct
63 Incorrect 141 ms 6564 KB Output isn't correct
64 Correct 217 ms 6596 KB Output is correct
65 Correct 216 ms 6668 KB Output is correct
66 Correct 167 ms 6592 KB Output is correct
67 Correct 164 ms 6616 KB Output is correct
68 Incorrect 89 ms 6596 KB Output isn't correct
69 Correct 82 ms 6556 KB Output is correct
70 Correct 85 ms 6608 KB Output is correct
71 Correct 76 ms 6596 KB Output is correct
72 Incorrect 67 ms 6648 KB Output isn't correct
73 Incorrect 82 ms 7060 KB Output isn't correct
74 Correct 105 ms 7108 KB Output is correct
75 Correct 117 ms 7252 KB Output is correct
76 Correct 117 ms 7152 KB Output is correct
77 Correct 113 ms 7060 KB Output is correct
78 Correct 134 ms 7108 KB Output is correct
79 Correct 94 ms 6980 KB Output is correct
80 Correct 107 ms 7064 KB Output is correct
81 Correct 126 ms 6980 KB Output is correct
82 Correct 109 ms 7060 KB Output is correct
83 Incorrect 141 ms 7100 KB Output isn't correct
84 Correct 129 ms 7108 KB Output is correct
85 Correct 122 ms 6948 KB Output is correct
86 Correct 148 ms 6996 KB Output is correct
87 Correct 144 ms 6920 KB Output is correct
88 Incorrect 145 ms 6812 KB Output isn't correct
89 Correct 163 ms 6872 KB Output is correct
90 Correct 162 ms 6936 KB Output is correct
91 Correct 145 ms 6852 KB Output is correct
92 Correct 142 ms 6808 KB Output is correct