oj.uz

Submission #956820

# Submission time Handle Problem Language Result Execution time Memory
956820 2024-04-02T14:07:28 Z wood Mecho (IOI09_mecho) C++17
4 / 100
 120 ms 6480 KB 
#include <bits/stdc++.h>  
using namespace std;
 
typedef long long ll;
typedef pair<int,int> p32;
typedef pair<ll,ll> p64;
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define fast_cin() ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define MOD %1000000007

int dfx[4] = {1,-1,0,0}; int dfy[4] = {0,0,1,-1};

int main()
{
    fast_cin();
    #ifndef ONLINE_JUDGE
        #ifdef _WIN32
            freopen("input.in", "r", stdin);
            freopen("input.out", "w", stdout);
        #endif
    #endif
    int n,s; cin>>n>>s;
    char arr[n][n];
    int bees[n][n];
    fill(bees[0],bees[0]+n*n,INT_MAX);
    queue<p32> hq;
    p32 start;
    for (size_t i = 0; i < n; i++)
    {
        for (size_t j = 0; j < n; j++)
        {
            cin>>arr[i][j];
            if(arr[i][j]=='H'){
               bees[i][j] = 1; 
                hq.emplace(i,j);
            }
            if(arr[i][j]=='D') start = p32(i,j);
        }
    }
    while(!hq.empty()){
        for (size_t i = 0; i < 4; i++)
        {
            int x = hq.front().fi+dfx[i];
            int y = hq.front().se+dfy[i];
            if(x>=0&&x<n&&y>=0&&y<n&&bees[x][y]==INT_MAX&&arr[x][y]!='T'&&arr[x][y]!='M'){
                bees[x][y] = bees[hq.front().fi][hq.front().se] + 1;
                hq.emplace(x,y);
            }
        }
        hq.pop();
    }
    int l = -1; 
    int r = 1000;
    while(r-l>1){
        int mid = (l+r)/2;
        queue<p32> q;
        q.push(start);
        int depth[n][n];
        memset(depth,0,sizeof depth);
        depth[start.fi][start.se] = 1;
        while(!q.empty()){
            for (size_t i = 0; i < 4; i++)
            {
                int x = q.front().fi+dfx[i];
                int y = q.front().se+dfy[i];
                int d = depth[q.front().fi][q.front().se];
                if(x>=0&&x<n&&y>=0&&y<n&&!depth[x][y]&&arr[x][y]!='T'&&(d+1)/s+mid<bees[x][y]){
                    if(arr[x][y]=='M'&&mid<bees[start.fi][start.se]){
                        l = mid;
                        goto next;
                    }
                    depth[x][y] = d+1;
                    q.emplace(x,y);
                }
            }
            q.pop();
        }
        r = mid;
        next: 
        continue;
    }
    cout<<l<<'\n';
    return 0;
}

Compilation message

mecho.cpp: In function 'int main()':
mecho.cpp:31:26: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   31 |     for (size_t i = 0; i < n; i++)
      |                        ~~^~~
mecho.cpp:33:30: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   33 |         for (size_t j = 0; j < n; j++)
      |                            ~~^~~

Subtask #1
4.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Incorrect 1 ms 348 KB Output isn't correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Incorrect 0 ms 348 KB Output isn't correct
6 Incorrect 0 ms 348 KB Output isn't correct
7 Incorrect 53 ms 6180 KB Output isn't correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Incorrect 0 ms 348 KB Output isn't correct
11 Correct 0 ms 348 KB Output is correct
12 Incorrect 0 ms 348 KB Output isn't correct
13 Incorrect 0 ms 348 KB Output isn't correct
14 Incorrect 0 ms 348 KB Output isn't correct
15 Correct 0 ms 348 KB Output is correct
16 Incorrect 1 ms 348 KB Output isn't correct
17 Correct 0 ms 348 KB Output is correct
18 Incorrect 1 ms 348 KB Output isn't correct
19 Correct 0 ms 348 KB Output is correct
20 Incorrect 0 ms 348 KB Output isn't correct
21 Correct 0 ms 348 KB Output is correct
22 Incorrect 0 ms 348 KB Output isn't correct
23 Incorrect 0 ms 348 KB Output isn't correct
24 Incorrect 0 ms 348 KB Output isn't correct
25 Incorrect 0 ms 348 KB Output isn't correct
26 Incorrect 0 ms 348 KB Output isn't correct
27 Incorrect 0 ms 348 KB Output isn't correct
28 Incorrect 1 ms 348 KB Output isn't correct
29 Incorrect 0 ms 348 KB Output isn't correct
30 Incorrect 1 ms 348 KB Output isn't correct
31 Incorrect 0 ms 348 KB Output isn't correct
32 Incorrect 0 ms 348 KB Output isn't correct
33 Incorrect 3 ms 1356 KB Output isn't correct
34 Incorrect 3 ms 1368 KB Output isn't correct
35 Incorrect 6 ms 1372 KB Output isn't correct
36 Incorrect 4 ms 1628 KB Output isn't correct
37 Incorrect 4 ms 1624 KB Output isn't correct
38 Incorrect 8 ms 1628 KB Output isn't correct
39 Incorrect 4 ms 2136 KB Output isn't correct
40 Incorrect 5 ms 2140 KB Output isn't correct
41 Incorrect 10 ms 2140 KB Output isn't correct
42 Incorrect 6 ms 2652 KB Output isn't correct
43 Incorrect 6 ms 2448 KB Output isn't correct
44 Incorrect 12 ms 2652 KB Output isn't correct
45 Incorrect 7 ms 2960 KB Output isn't correct
46 Incorrect 7 ms 2956 KB Output isn't correct
47 Incorrect 15 ms 2908 KB Output isn't correct
48 Incorrect 8 ms 3496 KB Output isn't correct
49 Incorrect 8 ms 3380 KB Output isn't correct
50 Incorrect 18 ms 3488 KB Output isn't correct
51 Incorrect 10 ms 3932 KB Output isn't correct
52 Incorrect 10 ms 3928 KB Output isn't correct
53 Incorrect 20 ms 3928 KB Output isn't correct
54 Incorrect 11 ms 4640 KB Output isn't correct
55 Incorrect 11 ms 4700 KB Output isn't correct
56 Incorrect 25 ms 4636 KB Output isn't correct
57 Incorrect 15 ms 5212 KB Output isn't correct
58 Incorrect 13 ms 5212 KB Output isn't correct
59 Incorrect 28 ms 5412 KB Output isn't correct
60 Incorrect 14 ms 5980 KB Output isn't correct
61 Incorrect 14 ms 5976 KB Output isn't correct
62 Incorrect 36 ms 5888 KB Output isn't correct
63 Incorrect 91 ms 6224 KB Output isn't correct
64 Incorrect 112 ms 5872 KB Output isn't correct
65 Incorrect 120 ms 6068 KB Output isn't correct
66 Incorrect 107 ms 5972 KB Output isn't correct
67 Incorrect 88 ms 5864 KB Output isn't correct
68 Incorrect 42 ms 5872 KB Output isn't correct
69 Incorrect 50 ms 5980 KB Output isn't correct
70 Incorrect 41 ms 5912 KB Output isn't correct
71 Incorrect 38 ms 5904 KB Output isn't correct
72 Incorrect 28 ms 6236 KB Output isn't correct
73 Incorrect 36 ms 6232 KB Output isn't correct
74 Incorrect 35 ms 6348 KB Output isn't correct
75 Incorrect 38 ms 6164 KB Output isn't correct
76 Incorrect 33 ms 6232 KB Output isn't correct
77 Incorrect 35 ms 6236 KB Output isn't correct
78 Incorrect 35 ms 6116 KB Output isn't correct
79 Incorrect 33 ms 6480 KB Output isn't correct
80 Incorrect 42 ms 6228 KB Output isn't correct
81 Incorrect 36 ms 6232 KB Output isn't correct
82 Incorrect 34 ms 6236 KB Output isn't correct
83 Incorrect 33 ms 6276 KB Output isn't correct
84 Incorrect 33 ms 6096 KB Output isn't correct
85 Incorrect 51 ms 6284 KB Output isn't correct
86 Incorrect 33 ms 6236 KB Output isn't correct
87 Incorrect 37 ms 6276 KB Output isn't correct
88 Incorrect 39 ms 6236 KB Output isn't correct
89 Incorrect 36 ms 6232 KB Output isn't correct
90 Incorrect 36 ms 6236 KB Output isn't correct
91 Incorrect 37 ms 6072 KB Output isn't correct
92 Incorrect 35 ms 6052 KB Output isn't correct