oj.uz

Submission #882608

# Submission time Handle Problem Language Result Execution time Memory
882608 2023-12-03T12:14:08 Z qrupafjzvm1 Mecho (IOI09_mecho) C++14
0 / 100
 1000 ms 65536 KB 
//memset 0x3f -> > 1000000000
#include <bits/stdc++.h>
#define f first
#define s second
#define MAXSIZE (int)(2e5+5)
// #define int long long
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
using namespace std;
typedef pair<int,int> ii;
string answerString[2] = {"NO", "YES"};
int add(int x, int y, int mod)
{
    int t = x + y;
    return t - mod * (t>=mod);
}
int sub(int x, int y, int mod)
{
    int t = x - y;
    return t + mod * (t<0);
}
int xd[4] = {0,0,1,-1}, yd[4] = {1,-1,0,0};
int d[808][808];
char c[808][808];
bool ch[808][808];
int mx, my, dx, dy, n, s;
vector <ii> hives;
void bfs()
{
    queue <ii> q;
    memset(d,0x3f,sizeof(d));
    for (ii h : hives) {q.push(h); d[h.f][h.s] = 0;}
    while (!q.empty())
    {
        ii u = q.front(); q.pop();
        for (int i=0;i<4;i++)
        {
            ii v = {u.f + xd[i], u.s + yd[i]};
            if (v.f>=1 && v.f<=n && v.s>=1 && v.s<=n
            && c[v.f][v.s] != 'T' && d[v.f][v.s]>d[u.f][u.s]+1)
            {
                d[v.f][v.s] = d[u.f][u.s] + 1;
                q.push(v);
            }
        }
    }
}
void dfs(ii u, int dt, int cnt)
{
    ch[u.f][u.s] = true;
    for (int i=0;i<4;i++)
    {
        ii v = {u.f + xd[i], u.s + yd[i]};
        if (v.f>=1 && v.f<=n && v.s>=1 && v.s<=n
        && c[v.f][v.s] != 'T' && dt+(cnt==0)<d[v.f][v.s])
        {
            if (cnt==0) dfs(v,dt+1,s-1);
            else dfs(v,dt,cnt-1);
        }
    }
}
signed main()
{
    //freopen("mecho.inp","r",stdin);
    //freopen("text.out","w",stdout);
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin>>n>>s;
    for (int i=1;i<=n;i++)
        for (int j=1;j<=n;j++)
        {
            cin>>c[i][j];
            if (c[i][j]=='M') {mx = i, my = j;}
            if (c[i][j]=='D') {dx = i, dy = j;}
            if (c[i][j]=='H') hives.push_back({i,j});
        }
    bfs();
    /*for (int i=1;i<=n;i++)
    {
        for (int j=1;j<=n;j++) cout<<d[i][j]<<" ";
        cout<<endl;
    }*/
    int l = -1, r = n*n+1, ans = -1;
    while (r-l>1)
    {
        //cout<<l<<" "<<r<<endl;
        memset(ch,0,sizeof(ch));
        int m = (l + r) / 2; dfs({mx, my}, m, s);
        if (ch[dx][dy]) l = ans = m;
        else r = m;
    }
    cout<<ans;
}

Subtask #1
0.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 4184 KB Output isn't correct
2 Incorrect 1 ms 4184 KB Output isn't correct
3 Incorrect 1 ms 4188 KB Output isn't correct
4 Incorrect 1 ms 4232 KB Output isn't correct
5 Execution timed out 1066 ms 4188 KB Time limit exceeded
6 Execution timed out 1045 ms 4188 KB Time limit exceeded
7 Execution timed out 1052 ms 5116 KB Time limit exceeded
8 Incorrect 2 ms 4188 KB Output isn't correct
9 Execution timed out 1087 ms 4188 KB Time limit exceeded
10 Correct 88 ms 4308 KB Output is correct
11 Correct 138 ms 4280 KB Output is correct
12 Incorrect 2 ms 4440 KB Output isn't correct
13 Execution timed out 1035 ms 4188 KB Time limit exceeded
14 Execution timed out 1037 ms 4184 KB Time limit exceeded
15 Execution timed out 1059 ms 4188 KB Time limit exceeded
16 Execution timed out 1064 ms 4188 KB Time limit exceeded
17 Execution timed out 1018 ms 4184 KB Time limit exceeded
18 Execution timed out 1034 ms 4184 KB Time limit exceeded
19 Execution timed out 1033 ms 4192 KB Time limit exceeded
20 Execution timed out 1090 ms 4304 KB Time limit exceeded
21 Execution timed out 1027 ms 4188 KB Time limit exceeded
22 Execution timed out 1047 ms 4440 KB Time limit exceeded
23 Execution timed out 1045 ms 4188 KB Time limit exceeded
24 Execution timed out 1026 ms 4816 KB Time limit exceeded
25 Execution timed out 1058 ms 4188 KB Time limit exceeded
26 Execution timed out 1036 ms 5208 KB Time limit exceeded
27 Execution timed out 1037 ms 4188 KB Time limit exceeded
28 Execution timed out 1065 ms 5468 KB Time limit exceeded
29 Execution timed out 1041 ms 4184 KB Time limit exceeded
30 Execution timed out 1099 ms 5720 KB Time limit exceeded
31 Execution timed out 1058 ms 4188 KB Time limit exceeded
32 Execution timed out 1039 ms 5980 KB Time limit exceeded
33 Execution timed out 1012 ms 6744 KB Time limit exceeded
34 Runtime error 44 ms 65536 KB Execution killed with signal 9
35 Execution timed out 1063 ms 15456 KB Time limit exceeded
36 Execution timed out 1092 ms 7512 KB Time limit exceeded
37 Runtime error 50 ms 65536 KB Execution killed with signal 9
38 Execution timed out 1049 ms 18264 KB Time limit exceeded
39 Execution timed out 1056 ms 8284 KB Time limit exceeded
40 Runtime error 43 ms 65536 KB Execution killed with signal 9
41 Execution timed out 1010 ms 21116 KB Time limit exceeded
42 Execution timed out 1031 ms 9292 KB Time limit exceeded
43 Runtime error 44 ms 65536 KB Execution killed with signal 9
44 Execution timed out 1058 ms 24156 KB Time limit exceeded
45 Execution timed out 1035 ms 10240 KB Time limit exceeded
46 Runtime error 45 ms 65536 KB Execution killed with signal 9
47 Execution timed out 1016 ms 33504 KB Time limit exceeded
48 Execution timed out 1032 ms 11588 KB Time limit exceeded
49 Runtime error 43 ms 65536 KB Execution killed with signal 9
50 Execution timed out 1095 ms 38452 KB Time limit exceeded
51 Execution timed out 1067 ms 12872 KB Time limit exceeded
52 Runtime error 43 ms 65536 KB Execution killed with signal 9
53 Execution timed out 1092 ms 43616 KB Time limit exceeded
54 Execution timed out 1056 ms 14164 KB Time limit exceeded
55 Runtime error 51 ms 65536 KB Execution killed with signal 9
56 Execution timed out 1080 ms 48980 KB Time limit exceeded
57 Execution timed out 1037 ms 15692 KB Time limit exceeded
58 Runtime error 46 ms 65536 KB Execution killed with signal 9
59 Execution timed out 1056 ms 54588 KB Time limit exceeded
60 Execution timed out 1065 ms 17236 KB Time limit exceeded
61 Runtime error 47 ms 65536 KB Execution killed with signal 9
62 Execution timed out 1029 ms 60240 KB Time limit exceeded
63 Execution timed out 1059 ms 4956 KB Time limit exceeded
64 Execution timed out 1074 ms 9780 KB Time limit exceeded
65 Execution timed out 1020 ms 4700 KB Time limit exceeded
66 Execution timed out 1051 ms 4956 KB Time limit exceeded
67 Execution timed out 1045 ms 4744 KB Time limit exceeded
68 Execution timed out 1049 ms 5204 KB Time limit exceeded
69 Execution timed out 1059 ms 7508 KB Time limit exceeded
70 Execution timed out 1048 ms 4924 KB Time limit exceeded
71 Execution timed out 1056 ms 4956 KB Time limit exceeded
72 Execution timed out 1042 ms 7336 KB Time limit exceeded
73 Execution timed out 1057 ms 5204 KB Time limit exceeded
74 Execution timed out 1048 ms 9040 KB Time limit exceeded
75 Execution timed out 1036 ms 5052 KB Time limit exceeded
76 Execution timed out 1042 ms 5200 KB Time limit exceeded
77 Execution timed out 1022 ms 5204 KB Time limit exceeded
78 Execution timed out 1052 ms 5200 KB Time limit exceeded
79 Execution timed out 1057 ms 8848 KB Time limit exceeded
80 Execution timed out 1068 ms 5204 KB Time limit exceeded
81 Execution timed out 1068 ms 5220 KB Time limit exceeded
82 Execution timed out 1071 ms 5364 KB Time limit exceeded
83 Execution timed out 1064 ms 5212 KB Time limit exceeded
84 Execution timed out 1065 ms 9812 KB Time limit exceeded
85 Execution timed out 1036 ms 4956 KB Time limit exceeded
86 Execution timed out 1004 ms 5208 KB Time limit exceeded
87 Execution timed out 1026 ms 5456 KB Time limit exceeded
88 Execution timed out 1030 ms 5208 KB Time limit exceeded
89 Execution timed out 1032 ms 11100 KB Time limit exceeded
90 Execution timed out 1072 ms 5204 KB Time limit exceeded
91 Execution timed out 1055 ms 5684 KB Time limit exceeded
92 Execution timed out 1046 ms 5208 KB Time limit exceeded