oj.uz

Submission #470770

# Submission time Handle Problem Language Result Execution time Memory
470770 2021-09-05T14:02:00 Z Yazan_Alattar Mecho (IOI09_mecho) C++14
4 / 100
 105 ms 7668 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;
char a[M][M];
int n, s, d[M][M], dist[M][M], res[M][M];
bool vist[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] == 'H' || a[ny][nx] == 'T' || a[ny][nx] == 'D' || 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] == 'H' || a[ny][nx] == 'T' || (dist[y][x]) / s >= d[ny][nx] - 1 || dist[ny][nx] || ny < 1 || nx < 1 || ny > n || nx > n) continue;
            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;
    for(int i = 1; i <= n; ++i){
        for(int j = 1; j <= n; ++j){
            res[i][j] = -1;
            if(d[i][j] && dist[i][j]) res[i][j] = (d[i][j] - 1) - ((dist[i][j] - 2) / s + 1);
//            cout << res[i][j] << " ";
        }
//        cout << endl;
    }
    priority_queue < pair < int, pair <int,int> > > pq;
    pq.push({res[st.F][st.S], st});
    vist[st.F][st.S] = 1;
    while(!pq.empty()){
        int x = pq.top().S.S;
        int y = pq.top().S.F;
        int cost = pq.top().F;
        pq.pop();
//        cout << x << " " << y << " " << cost << endl;
        if(x == en.S && y == en.F) return cout << cost << endl, 0;
        for(int i = 0; i < 4; ++i){
            int nx = x + dx[i];
            int ny = y + dy[i];
            int ncost = min(cost, res[ny][nx]);
            if(vist[ny][nx] || dist[y][x] >= dist[ny][nx] || ncost == -1 || ny < 1 || nx < 1 || ny > n || nx > n) continue;
            vist[ny][nx] = 1;
            pq.push({ncost, {ny, nx}});
        }
    }
    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 0 ms 332 KB Output isn't correct
4 Incorrect 1 ms 332 KB Output isn't correct
5 Incorrect 0 ms 332 KB Output isn't correct
6 Incorrect 1 ms 332 KB Output isn't correct
7 Incorrect 82 ms 7428 KB Output isn't correct
8 Correct 1 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 844 KB Output isn't correct
13 Incorrect 1 ms 588 KB Output isn't correct
14 Correct 1 ms 716 KB Output is correct
15 Incorrect 1 ms 332 KB Output isn't correct
16 Incorrect 1 ms 460 KB Output isn't correct
17 Incorrect 1 ms 460 KB Output isn't correct
18 Incorrect 1 ms 460 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 588 KB Output isn't correct
23 Incorrect 1 ms 588 KB Output isn't correct
24 Incorrect 1 ms 716 KB Output isn't correct
25 Incorrect 1 ms 716 KB Output isn't correct
26 Incorrect 1 ms 844 KB Output isn't correct
27 Incorrect 1 ms 716 KB Output isn't correct
28 Incorrect 1 ms 844 KB Output isn't correct
29 Incorrect 1 ms 716 KB Output isn't correct
30 Incorrect 1 ms 844 KB Output isn't correct
31 Incorrect 1 ms 716 KB Output isn't correct
32 Incorrect 2 ms 972 KB Output isn't correct
33 Incorrect 13 ms 2612 KB Output isn't correct
34 Incorrect 13 ms 3388 KB Output isn't correct
35 Incorrect 15 ms 3360 KB Output isn't correct
36 Incorrect 15 ms 3020 KB Output isn't correct
37 Incorrect 19 ms 3864 KB Output isn't correct
38 Incorrect 24 ms 3788 KB Output isn't correct
39 Incorrect 18 ms 3308 KB Output isn't correct
40 Incorrect 19 ms 4300 KB Output isn't correct
41 Incorrect 26 ms 4192 KB Output isn't correct
42 Incorrect 22 ms 3684 KB Output isn't correct
43 Incorrect 24 ms 4620 KB Output isn't correct
44 Incorrect 30 ms 4644 KB Output isn't correct
45 Incorrect 31 ms 3996 KB Output isn't correct
46 Incorrect 28 ms 5060 KB Output isn't correct
47 Incorrect 35 ms 5080 KB Output isn't correct
48 Incorrect 31 ms 4344 KB Output isn't correct
49 Incorrect 33 ms 5568 KB Output isn't correct
50 Incorrect 42 ms 5576 KB Output isn't correct
51 Incorrect 36 ms 4676 KB Output isn't correct
52 Incorrect 38 ms 6032 KB Output isn't correct
53 Incorrect 49 ms 6052 KB Output isn't correct
54 Incorrect 43 ms 5060 KB Output isn't correct
55 Incorrect 46 ms 6484 KB Output isn't correct
56 Incorrect 57 ms 6440 KB Output isn't correct
57 Incorrect 48 ms 5456 KB Output isn't correct
58 Incorrect 50 ms 6896 KB Output isn't correct
59 Incorrect 63 ms 6940 KB Output isn't correct
60 Incorrect 55 ms 5796 KB Output isn't correct
61 Incorrect 60 ms 7364 KB Output isn't correct
62 Incorrect 73 ms 7364 KB Output isn't correct
63 Incorrect 81 ms 7304 KB Output isn't correct
64 Incorrect 87 ms 7376 KB Output isn't correct
65 Incorrect 79 ms 7288 KB Output isn't correct
66 Incorrect 80 ms 7364 KB Output isn't correct
67 Correct 72 ms 7360 KB Output is correct
68 Incorrect 70 ms 7328 KB Output isn't correct
69 Incorrect 72 ms 7308 KB Output isn't correct
70 Incorrect 69 ms 7472 KB Output isn't correct
71 Incorrect 66 ms 7412 KB Output isn't correct
72 Incorrect 73 ms 7396 KB Output isn't correct
73 Incorrect 75 ms 7576 KB Output isn't correct
74 Incorrect 101 ms 7620 KB Output isn't correct
75 Incorrect 77 ms 7560 KB Output isn't correct
76 Incorrect 76 ms 7620 KB Output isn't correct
77 Incorrect 78 ms 7556 KB Output isn't correct
78 Correct 74 ms 5996 KB Output is correct
79 Incorrect 96 ms 7560 KB Output isn't correct
80 Incorrect 77 ms 5952 KB Output isn't correct
81 Incorrect 76 ms 5888 KB Output isn't correct
82 Incorrect 80 ms 5956 KB Output isn't correct
83 Incorrect 75 ms 5924 KB Output isn't correct
84 Incorrect 94 ms 7668 KB Output isn't correct
85 Incorrect 78 ms 5968 KB Output isn't correct
86 Incorrect 75 ms 6056 KB Output isn't correct
87 Incorrect 75 ms 6212 KB Output isn't correct
88 Incorrect 78 ms 6256 KB Output isn't correct
89 Incorrect 105 ms 7528 KB Output isn't correct
90 Incorrect 81 ms 7128 KB Output isn't correct
91 Incorrect 86 ms 7492 KB Output isn't correct
92 Incorrect 76 ms 6240 KB Output isn't correct