Submission #882618

# Submission time Handle Problem Language Result Execution time Memory
882618 2023-12-03T12:19:53 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] == 'G' && 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;
    }
    memset(ch,0,sizeof(ch));
    dfs({mx, my}, l, s);
    if (ch[dx][dy]) cout<<l;
    else cout<<-1;
}
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 4188 KB Output isn't correct
2 Incorrect 2 ms 4188 KB Output isn't correct
3 Incorrect 1 ms 4188 KB Output isn't correct
4 Incorrect 1 ms 4188 KB Output isn't correct
5 Runtime error 44 ms 65536 KB Execution killed with signal 9
6 Execution timed out 1059 ms 4184 KB Time limit exceeded
7 Execution timed out 1062 ms 4700 KB Time limit exceeded
8 Incorrect 1 ms 4188 KB Output isn't correct
9 Execution timed out 1085 ms 4188 KB Time limit exceeded
10 Correct 92 ms 4440 KB Output is correct
11 Correct 224 ms 4268 KB Output is correct
12 Runtime error 37 ms 65536 KB Execution killed with signal 9
13 Execution timed out 1043 ms 4188 KB Time limit exceeded
14 Execution timed out 1058 ms 4188 KB Time limit exceeded
15 Execution timed out 1050 ms 4188 KB Time limit exceeded
16 Execution timed out 1020 ms 4184 KB Time limit exceeded
17 Execution timed out 1099 ms 4184 KB Time limit exceeded
18 Execution timed out 1061 ms 4188 KB Time limit exceeded
19 Execution timed out 1049 ms 4188 KB Time limit exceeded
20 Execution timed out 1032 ms 4188 KB Time limit exceeded
21 Execution timed out 1057 ms 4188 KB Time limit exceeded
22 Execution timed out 1035 ms 4188 KB Time limit exceeded
23 Execution timed out 1038 ms 4188 KB Time limit exceeded
24 Execution timed out 1049 ms 4696 KB Time limit exceeded
25 Execution timed out 1061 ms 4280 KB Time limit exceeded
26 Execution timed out 1035 ms 4184 KB Time limit exceeded
27 Execution timed out 1037 ms 4184 KB Time limit exceeded
28 Execution timed out 1071 ms 4188 KB Time limit exceeded
29 Execution timed out 1071 ms 4188 KB Time limit exceeded
30 Execution timed out 1044 ms 5724 KB Time limit exceeded
31 Execution timed out 1045 ms 4188 KB Time limit exceeded
32 Execution timed out 1061 ms 5980 KB Time limit exceeded
33 Execution timed out 1057 ms 4188 KB Time limit exceeded
34 Runtime error 62 ms 65536 KB Execution killed with signal 9
35 Execution timed out 1030 ms 15448 KB Time limit exceeded
36 Execution timed out 1081 ms 4428 KB Time limit exceeded
37 Execution timed out 1069 ms 4444 KB Time limit exceeded
38 Execution timed out 1088 ms 18052 KB Time limit exceeded
39 Execution timed out 1084 ms 4324 KB Time limit exceeded
40 Runtime error 47 ms 65536 KB Execution killed with signal 9
41 Execution timed out 1010 ms 21084 KB Time limit exceeded
42 Execution timed out 1037 ms 4440 KB Time limit exceeded
43 Execution timed out 1079 ms 4552 KB Time limit exceeded
44 Execution timed out 1089 ms 24012 KB Time limit exceeded
45 Execution timed out 1084 ms 4424 KB Time limit exceeded
46 Runtime error 47 ms 65536 KB Execution killed with signal 9
47 Execution timed out 1093 ms 33500 KB Time limit exceeded
48 Execution timed out 1061 ms 4444 KB Time limit exceeded
49 Execution timed out 1060 ms 4700 KB Time limit exceeded
50 Execution timed out 1061 ms 38492 KB Time limit exceeded
51 Execution timed out 1045 ms 4700 KB Time limit exceeded
52 Runtime error 48 ms 65536 KB Execution killed with signal 9
53 Execution timed out 1080 ms 43600 KB Time limit exceeded
54 Execution timed out 1027 ms 4696 KB Time limit exceeded
55 Execution timed out 1039 ms 4700 KB Time limit exceeded
56 Execution timed out 1041 ms 48996 KB Time limit exceeded
57 Execution timed out 1025 ms 4648 KB Time limit exceeded
58 Runtime error 47 ms 65536 KB Execution killed with signal 9
59 Execution timed out 1033 ms 54608 KB Time limit exceeded
60 Execution timed out 1053 ms 4700 KB Time limit exceeded
61 Execution timed out 1043 ms 4952 KB Time limit exceeded
62 Execution timed out 1059 ms 60092 KB Time limit exceeded
63 Execution timed out 1022 ms 4696 KB Time limit exceeded
64 Execution timed out 1068 ms 9820 KB Time limit exceeded
65 Execution timed out 1027 ms 4616 KB Time limit exceeded
66 Execution timed out 1044 ms 4872 KB Time limit exceeded
67 Execution timed out 1035 ms 4688 KB Time limit exceeded
68 Execution timed out 1050 ms 5060 KB Time limit exceeded
69 Execution timed out 1071 ms 7252 KB Time limit exceeded
70 Execution timed out 1014 ms 4952 KB Time limit exceeded
71 Execution timed out 1054 ms 4948 KB Time limit exceeded
72 Runtime error 59 ms 65536 KB Execution killed with signal 9
73 Execution timed out 1062 ms 4956 KB Time limit exceeded
74 Execution timed out 1022 ms 8792 KB Time limit exceeded
75 Execution timed out 1081 ms 5164 KB Time limit exceeded
76 Execution timed out 1018 ms 4908 KB Time limit exceeded
77 Execution timed out 1022 ms 5248 KB Time limit exceeded
78 Execution timed out 1068 ms 4956 KB Time limit exceeded
79 Execution timed out 1059 ms 8796 KB Time limit exceeded
80 Execution timed out 1063 ms 4900 KB Time limit exceeded
81 Execution timed out 1046 ms 4956 KB Time limit exceeded
82 Execution timed out 1088 ms 5248 KB Time limit exceeded
83 Execution timed out 1061 ms 4948 KB Time limit exceeded
84 Execution timed out 1022 ms 9612 KB Time limit exceeded
85 Execution timed out 1032 ms 4956 KB Time limit exceeded
86 Execution timed out 1040 ms 5200 KB Time limit exceeded
87 Execution timed out 1068 ms 5212 KB Time limit exceeded
88 Execution timed out 1036 ms 4944 KB Time limit exceeded
89 Execution timed out 1014 ms 10932 KB Time limit exceeded
90 Execution timed out 1033 ms 5204 KB Time limit exceeded
91 Execution timed out 1026 ms 5468 KB Time limit exceeded
92 Execution timed out 1069 ms 5052 KB Time limit exceeded