oj.uz

Submission #892623

# Submission time Handle Problem Language Result Execution time Memory
892623 2023-12-25T15:32:33 Z seriouslyFlawed Mecho (IOI09_mecho) C++17
44 / 100
 1000 ms 8256 KB 
#include <bits/stdc++.h>

using namespace std;

// Shortcuts for common operations
#define pb push_back
#define ppb pop_back
#define f first
#define s second
#define all(x) (x).begin(), (x).end()
#define ll long long
#define endl "\n"

// Type definitions for convenience
typedef vector<int> vi;
typedef vector<bool> vb;
typedef pair<int, int> pii;
typedef vector<vi> vvi;
typedef vector<pii> vii;
typedef unordered_set<int> usi;
typedef unordered_map<int, int> umii;

// Debugging macros
#define debug(x) cerr << #x << " = " << (x) << '\n'
#define debug_vector(v) _debug_vector(#v, v)
template<typename T>
void _debug_vector(const string& name, const vector<T>& a) {
    cerr << name << " = [ ";
    for(const auto &x : a) cerr << x << ' ';
    cerr << "]\n";
}

// I/O redirection for local testing
#define iofile(io) \
        freopen((io + ".in").c_str(), "r", stdin); \
        freopen((io + ".out").c_str(), "w", stdout);

// delta for floodfill
vi dx = {0, 1, 0, -1};
vi dy = {1, 0, -1, 0};

// extended deltas for floodfill
vi edx = {0, 1, 0, -1, 1, 1, -1, -1};
vi edy = {1, 0, -1, 0, 1, -1, 1, -1};

// Common outputs
void yes() { cout << "YES" << '\n'; }
void no() { cout << "NO" << '\n'; }

// cin.tie(0)->sync_with_stdio(0);

void fx() {
    // Functionality for fx
    int n, k;
    cin >> n >> k;

    vector<string>tab(n);
    vvi bee(n, vi(n, INT_MAX));
    vii hives;
    pii start;

    for(int i = 0; i < n; i++){
        cin >> tab[i];
        for(int j = 0; j < n; j++){
            if(tab[i][j] == 'M') start = {i, j};
            else if(tab[i][j] == 'H') hives.pb({i, j});
        }
    }

    queue<pair<int, pii>>q;
    for(auto &hive: hives){
        q.push({0, hive});
        bee[hive.f][hive.s] = 0;
    }

    while(!q.empty()){
        auto &[t, hive] = q.front();
        q.pop();
        auto &[x, y] = hive;
        
        for(int i = 0; i < 4; i++){
            auto [X, Y] = make_pair(x+dx[i], y+dy[i]);
            if(X >= 0 and X < n and Y >= 0 and Y < n and (tab[X][Y] == 'G' or tab[X][Y] == 'M') and bee[X][Y] > t + 1){
                q.push({t+1, {X, Y}});
                bee[X][Y] = t+1;
            }
        }
    }

    queue<pair<array<int, 3>, pii>>que;
    vector<vi>best(n, vi(n, INT_MIN)); // <- see init.
    que.push({{0, bee[start.f][start.s], k}, {start.f, start.s}}); //<- sure about init?
    best[start.f][start.s] = bee[start.f][start.s];
    int res = INT_MIN;

    while(!que.empty()){
        auto [T, C] = que.front();
        que.pop();
        auto [t, s, steps] = T;
        auto [x, y] = C;

        if(tab[x][y] == 'D') res = max(res, best[x][y]);
        
        for(int i = 0; i < 4; i++){
            auto [X, Y] = make_pair(x + dx[i], y + dy[i]);

            if(X >= 0 and X < n and Y >= 0 and Y < n and tab[X][Y] != 'T' and (bee[X][Y] > (steps?t:t+1)) and best[X][Y] < min(s, bee[X][Y] - (steps?t:t+1))){
                que.push({{(steps?t:t+1), min(s, bee[X][Y] - (steps?t:t+1)), (steps?steps-1:k-1)}, {X, Y}});
                best[X][Y] = max(best[X][Y], min(s, bee[X][Y] -(steps?t:t+1)));
            }
        }
    }

    cout << ((res == INT_MIN)?-1:res-1) << endl;
}

int main() {
    // Uncomment the following lines for file I/O
    // iofile(string("hello"));
    
    // Uncomment the following lines for multiple test cases
    // int t; cin >> t;
    // while(t--) fx();
    
    // Single test case
    fx();
    
    return 0;
}

Subtask #1
44.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Incorrect 0 ms 344 KB Output isn't correct
4 Incorrect 0 ms 432 KB Output isn't correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 187 ms 7304 KB Output is correct
8 Incorrect 0 ms 348 KB Output isn't correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 456 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Incorrect 0 ms 344 KB Output isn't correct
16 Correct 0 ms 348 KB Output is correct
17 Incorrect 0 ms 436 KB Output isn't correct
18 Correct 1 ms 600 KB Output is correct
19 Incorrect 0 ms 348 KB Output isn't correct
20 Correct 0 ms 348 KB Output is correct
21 Incorrect 0 ms 348 KB Output isn't correct
22 Correct 0 ms 348 KB Output is correct
23 Incorrect 0 ms 452 KB Output isn't correct
24 Correct 0 ms 388 KB Output is correct
25 Incorrect 0 ms 348 KB Output isn't correct
26 Correct 1 ms 348 KB Output is correct
27 Incorrect 0 ms 348 KB Output isn't correct
28 Correct 1 ms 348 KB Output is correct
29 Incorrect 1 ms 348 KB Output isn't correct
30 Correct 1 ms 348 KB Output is correct
31 Incorrect 1 ms 348 KB Output isn't correct
32 Correct 1 ms 348 KB Output is correct
33 Incorrect 4 ms 1584 KB Output isn't correct
34 Correct 5 ms 1720 KB Output is correct
35 Correct 177 ms 1924 KB Output is correct
36 Incorrect 5 ms 1880 KB Output isn't correct
37 Correct 6 ms 1884 KB Output is correct
38 Correct 269 ms 2344 KB Output is correct
39 Incorrect 7 ms 2392 KB Output isn't correct
40 Correct 8 ms 2396 KB Output is correct
41 Correct 399 ms 2976 KB Output is correct
42 Incorrect 8 ms 3160 KB Output isn't correct
43 Correct 10 ms 3164 KB Output is correct
44 Correct 535 ms 3476 KB Output is correct
45 Incorrect 10 ms 3676 KB Output isn't correct
46 Correct 12 ms 3672 KB Output is correct
47 Correct 734 ms 4568 KB Output is correct
48 Incorrect 12 ms 4188 KB Output isn't correct
49 Correct 13 ms 4092 KB Output is correct
50 Correct 965 ms 5256 KB Output is correct
51 Incorrect 13 ms 4700 KB Output isn't correct
52 Correct 16 ms 4700 KB Output is correct
53 Execution timed out 1055 ms 5700 KB Time limit exceeded
54 Incorrect 16 ms 5464 KB Output isn't correct
55 Correct 24 ms 5304 KB Output is correct
56 Execution timed out 1006 ms 6724 KB Time limit exceeded
57 Incorrect 18 ms 5980 KB Output isn't correct
58 Correct 21 ms 5980 KB Output is correct
59 Execution timed out 1095 ms 7536 KB Time limit exceeded
60 Incorrect 20 ms 6732 KB Output isn't correct
61 Correct 23 ms 6908 KB Output is correct
62 Execution timed out 1041 ms 8256 KB Time limit exceeded
63 Incorrect 34 ms 6740 KB Output isn't correct
64 Incorrect 43 ms 6748 KB Output isn't correct
65 Incorrect 41 ms 6684 KB Output isn't correct
66 Incorrect 38 ms 6736 KB Output isn't correct
67 Correct 32 ms 6740 KB Output is correct
68 Correct 33 ms 6736 KB Output is correct
69 Correct 34 ms 6732 KB Output is correct
70 Correct 32 ms 6748 KB Output is correct
71 Correct 38 ms 6736 KB Output is correct
72 Correct 36 ms 6724 KB Output is correct
73 Correct 34 ms 6924 KB Output is correct
74 Incorrect 499 ms 7508 KB Output isn't correct
75 Correct 161 ms 6996 KB Output is correct
76 Correct 190 ms 7308 KB Output is correct
77 Correct 180 ms 7252 KB Output is correct
78 Correct 56 ms 7180 KB Output is correct
79 Incorrect 105 ms 7012 KB Output isn't correct
80 Incorrect 59 ms 6992 KB Output isn't correct
81 Correct 39 ms 6736 KB Output is correct
82 Incorrect 66 ms 6996 KB Output isn't correct
83 Correct 81 ms 7128 KB Output is correct
84 Correct 320 ms 7376 KB Output is correct
85 Correct 254 ms 7004 KB Output is correct
86 Correct 217 ms 7276 KB Output is correct
87 Correct 145 ms 6996 KB Output is correct
88 Correct 288 ms 7504 KB Output is correct
89 Correct 588 ms 7344 KB Output is correct
90 Correct 146 ms 7248 KB Output is correct
91 Correct 467 ms 7744 KB Output is correct
92 Correct 343 ms 7620 KB Output is correct