oj.uz

Submission #470762

# Submission time Handle Problem Language Result Execution time Memory
470762 2021-09-05T13:24:06 Z Yazan_Alattar Mecho (IOI09_mecho) C++14
4 / 100
 40 ms 4548 KB 
#include <iostream>
#include <fstream>
#include <vector>
#include <cstring>
#include <algorithm>
#include <set>
#include <map>
#include <queue>
#include <utility>
#include <cmath>
#include <numeric>
using namespace std;
typedef long long ll;
#define F first
#define S second
#define pb push_back
#define endl "\n"
#define all(x) x.begin(), x.end()
const int M = 1007;
const ll inf = 1e18;
const ll mod = 1e9 + 7;
const double pi = acos(-1);
const int dx[] = {1, 0, -1, 0}, dy[] = {0, 1, 0, -1};

queue < pair <int,int> > q;
pair <int,int> st, en, p[M][M];
char a[M][M];
int n, s, d[M][M], dist[M][M];

int main()
{
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n >> s;
    for(int i = 1; i <= n; ++i){
        for(int j = 1; j <= n; ++j){
            cin >> a[i][j];
            if(a[i][j] == 'H') q.push({i, j}), d[i][j] = 1;
            if(a[i][j] == 'D') en = {i, j};
            if(a[i][j] == 'M') st = {i, j};
        }
    }
    while(!q.empty()){
        int x = q.front().S;
        int y = q.front().F;
        q.pop();
        for(int i = 0; i < 4; ++i){
            int nx = x + dx[i];
            int ny = y + dy[i];
            if(a[ny][nx] != 'G' || d[ny][nx] || ny < 1 || nx < 1 || ny > n || nx > n) continue;
            d[ny][nx] = d[y][x] + 1;
            q.push({ny, nx});
        }
    }
//    for(int i = 1; i <= n; ++i){
//        for(int j = 1; j <= n; ++j){
//            cout << d[i][j] << " ";
//        }
//        cout << endl;
//    }
    q.push(st);
    dist[st.F][st.S] = 1;
    while(!q.empty()){
        int x = q.front().S;
        int y = q.front().F;
        q.pop();
        for(int i = 0; i < 4; ++i){
            int nx = x + dx[i];
            int ny = y + dy[i];
            if(a[ny][nx] != 'G' || (dist[y][x]) / s >= d[y][x] - 1 || dist[ny][nx] || ny < 1 || nx < 1 || ny > n || nx > n) continue;
            p[ny][nx] = {y, x};
            dist[ny][nx] = dist[y][x] + 1;
            q.push({ny, nx});
        }
    }
//    cout << endl;
//    for(int i = 1; i <= n; ++i){
//        for(int j = 1; j <= n; ++j) cout << dist[i][j] << " ";
//        cout << endl;
//    }
    if(!dist[en.F][en.S]) return cout << -1 << endl, 0;
    int ans = 1e9;

    int i = en.F, j = en.S;
    while(i != st.F || j != st.S){
        ans = min(ans, (d[i][j] - 1) - ((dist[i][j] - 2) / s + 1));
//        cout << i << " " << j << " " << (d[i][j] - 1) - ((dist[i][j] - 2) / s + 1) << " " << d[i][j] - 1 << " " << (dist[i][j] - 1) / s << endl;
        int ni = p[i][j].F, nj = p[i][j].S;
        i = ni;
        j = nj;
    }
    cout << ans << endl;
    return 0;
}
// Don't forget special cases. (n = 1?)
// Look for the constraints. (Runtime array? overflow?)

Subtask #1
4.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 332 KB Output isn't correct
2 Incorrect 1 ms 332 KB Output isn't correct
3 Incorrect 1 ms 332 KB Output isn't correct
4 Incorrect 1 ms 332 KB Output isn't correct
5 Incorrect 1 ms 332 KB Output isn't correct
6 Incorrect 1 ms 332 KB Output isn't correct
7 Incorrect 30 ms 4304 KB Output isn't correct
8 Correct 0 ms 332 KB Output is correct
9 Incorrect 1 ms 332 KB Output isn't correct
10 Incorrect 1 ms 332 KB Output isn't correct
11 Incorrect 1 ms 332 KB Output isn't correct
12 Incorrect 1 ms 588 KB Output isn't correct
13 Incorrect 1 ms 460 KB Output isn't correct
14 Correct 1 ms 588 KB Output is correct
15 Incorrect 1 ms 332 KB Output isn't correct
16 Incorrect 1 ms 332 KB Output isn't correct
17 Incorrect 1 ms 332 KB Output isn't correct
18 Incorrect 1 ms 332 KB Output isn't correct
19 Incorrect 1 ms 460 KB Output isn't correct
20 Incorrect 1 ms 460 KB Output isn't correct
21 Incorrect 1 ms 460 KB Output isn't correct
22 Incorrect 1 ms 460 KB Output isn't correct
23 Incorrect 1 ms 460 KB Output isn't correct
24 Incorrect 1 ms 588 KB Output isn't correct
25 Incorrect 1 ms 588 KB Output isn't correct
26 Incorrect 1 ms 588 KB Output isn't correct
27 Incorrect 1 ms 588 KB Output isn't correct
28 Incorrect 1 ms 588 KB Output isn't correct
29 Incorrect 1 ms 588 KB Output isn't correct
30 Incorrect 1 ms 588 KB Output isn't correct
31 Incorrect 1 ms 588 KB Output isn't correct
32 Incorrect 1 ms 588 KB Output isn't correct
33 Incorrect 5 ms 1996 KB Output isn't correct
34 Incorrect 5 ms 1996 KB Output isn't correct
35 Incorrect 6 ms 1996 KB Output isn't correct
36 Incorrect 6 ms 2252 KB Output isn't correct
37 Incorrect 6 ms 2252 KB Output isn't correct
38 Incorrect 8 ms 2252 KB Output isn't correct
39 Incorrect 7 ms 2508 KB Output isn't correct
40 Incorrect 7 ms 2508 KB Output isn't correct
41 Incorrect 9 ms 2508 KB Output isn't correct
42 Incorrect 9 ms 2764 KB Output isn't correct
43 Incorrect 10 ms 2736 KB Output isn't correct
44 Incorrect 11 ms 2764 KB Output isn't correct
45 Incorrect 10 ms 3000 KB Output isn't correct
46 Incorrect 10 ms 3044 KB Output isn't correct
47 Incorrect 13 ms 3056 KB Output isn't correct
48 Incorrect 12 ms 3276 KB Output isn't correct
49 Incorrect 11 ms 3276 KB Output isn't correct
50 Incorrect 15 ms 3196 KB Output isn't correct
51 Incorrect 13 ms 3532 KB Output isn't correct
52 Incorrect 13 ms 3532 KB Output isn't correct
53 Incorrect 18 ms 3532 KB Output isn't correct
54 Incorrect 15 ms 3720 KB Output isn't correct
55 Incorrect 14 ms 3768 KB Output isn't correct
56 Incorrect 20 ms 3788 KB Output isn't correct
57 Incorrect 19 ms 4040 KB Output isn't correct
58 Incorrect 17 ms 3932 KB Output isn't correct
59 Incorrect 25 ms 4044 KB Output isn't correct
60 Incorrect 19 ms 4184 KB Output isn't correct
61 Incorrect 18 ms 4172 KB Output isn't correct
62 Incorrect 26 ms 4172 KB Output isn't correct
63 Incorrect 29 ms 4280 KB Output isn't correct
64 Incorrect 29 ms 4200 KB Output isn't correct
65 Incorrect 31 ms 4268 KB Output isn't correct
66 Incorrect 29 ms 4280 KB Output isn't correct
67 Correct 29 ms 4248 KB Output is correct
68 Incorrect 39 ms 4300 KB Output isn't correct
69 Incorrect 35 ms 4308 KB Output isn't correct
70 Incorrect 34 ms 4300 KB Output isn't correct
71 Incorrect 34 ms 4268 KB Output isn't correct
72 Incorrect 40 ms 4300 KB Output isn't correct
73 Incorrect 32 ms 4548 KB Output isn't correct
74 Incorrect 33 ms 4448 KB Output isn't correct
75 Incorrect 32 ms 4532 KB Output isn't correct
76 Incorrect 31 ms 4428 KB Output isn't correct
77 Incorrect 33 ms 4492 KB Output isn't correct
78 Correct 30 ms 4456 KB Output is correct
79 Incorrect 31 ms 4476 KB Output isn't correct
80 Incorrect 31 ms 4432 KB Output isn't correct
81 Incorrect 31 ms 4436 KB Output isn't correct
82 Incorrect 31 ms 4448 KB Output isn't correct
83 Incorrect 30 ms 4480 KB Output isn't correct
84 Incorrect 31 ms 4428 KB Output isn't correct
85 Incorrect 31 ms 4360 KB Output isn't correct
86 Incorrect 30 ms 4380 KB Output isn't correct
87 Incorrect 30 ms 4428 KB Output isn't correct
88 Incorrect 31 ms 4420 KB Output isn't correct
89 Incorrect 30 ms 4316 KB Output isn't correct
90 Incorrect 31 ms 4424 KB Output isn't correct
91 Incorrect 30 ms 4420 KB Output isn't correct
92 Incorrect 35 ms 4348 KB Output isn't correct