oj.uz

Submission #892635

# Submission time Handle Problem Language Result Execution time Memory
892635 2023-12-25T15:45:58 Z seriouslyFlawed Mecho (IOI09_mecho) C++17
44 / 100
 1000 ms 7616 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 <= 0)?-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 348 KB Output isn't correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 176 ms 6424 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 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Incorrect 0 ms 348 KB Output isn't correct
16 Correct 0 ms 348 KB Output is correct
17 Incorrect 0 ms 348 KB Output isn't correct
18 Correct 1 ms 348 KB Output is correct
19 Incorrect 0 ms 348 KB Output isn't correct
20 Correct 0 ms 344 KB Output is correct
21 Incorrect 0 ms 344 KB Output isn't correct
22 Correct 0 ms 348 KB Output is correct
23 Incorrect 0 ms 348 KB Output isn't correct
24 Correct 0 ms 348 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 1 ms 348 KB Output isn't correct
28 Correct 0 ms 348 KB Output is correct
29 Incorrect 1 ms 600 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 0 ms 348 KB Output is correct
33 Incorrect 4 ms 1372 KB Output isn't correct
34 Correct 5 ms 1372 KB Output is correct
35 Correct 178 ms 1752 KB Output is correct
36 Incorrect 6 ms 1884 KB Output isn't correct
37 Correct 6 ms 1884 KB Output is correct
38 Correct 268 ms 2112 KB Output is correct
39 Incorrect 6 ms 2140 KB Output isn't correct
40 Correct 8 ms 2140 KB Output is correct
41 Correct 390 ms 2812 KB Output is correct
42 Incorrect 8 ms 2908 KB Output isn't correct
43 Correct 9 ms 2784 KB Output is correct
44 Correct 550 ms 3452 KB Output is correct
45 Incorrect 10 ms 3164 KB Output isn't correct
46 Correct 11 ms 3164 KB Output is correct
47 Correct 734 ms 4032 KB Output is correct
48 Incorrect 12 ms 3676 KB Output isn't correct
49 Correct 13 ms 3676 KB Output is correct
50 Correct 942 ms 4768 KB Output is correct
51 Incorrect 13 ms 4384 KB Output isn't correct
52 Correct 15 ms 4188 KB Output is correct
53 Execution timed out 1092 ms 5580 KB Time limit exceeded
54 Incorrect 15 ms 4956 KB Output isn't correct
55 Correct 18 ms 4956 KB Output is correct
56 Execution timed out 1063 ms 5884 KB Time limit exceeded
57 Incorrect 19 ms 5464 KB Output isn't correct
58 Correct 20 ms 5464 KB Output is correct
59 Execution timed out 1038 ms 6780 KB Time limit exceeded
60 Incorrect 20 ms 6236 KB Output isn't correct
61 Correct 25 ms 6236 KB Output is correct
62 Execution timed out 1062 ms 7616 KB Time limit exceeded
63 Incorrect 31 ms 6236 KB Output isn't correct
64 Incorrect 43 ms 6280 KB Output isn't correct
65 Incorrect 40 ms 6060 KB Output isn't correct
66 Incorrect 38 ms 6068 KB Output isn't correct
67 Correct 34 ms 6224 KB Output is correct
68 Correct 33 ms 6236 KB Output is correct
69 Correct 34 ms 6260 KB Output is correct
70 Correct 31 ms 6112 KB Output is correct
71 Correct 31 ms 6112 KB Output is correct
72 Correct 37 ms 6116 KB Output is correct
73 Correct 35 ms 6232 KB Output is correct
74 Incorrect 522 ms 6992 KB Output isn't correct
75 Correct 164 ms 6560 KB Output is correct
76 Correct 205 ms 6736 KB Output is correct
77 Correct 182 ms 6480 KB Output is correct
78 Correct 49 ms 6232 KB Output is correct
79 Incorrect 106 ms 6376 KB Output isn't correct
80 Incorrect 66 ms 6484 KB Output isn't correct
81 Correct 38 ms 6176 KB Output is correct
82 Incorrect 75 ms 6228 KB Output isn't correct
83 Correct 79 ms 6224 KB Output is correct
84 Correct 326 ms 6992 KB Output is correct
85 Correct 230 ms 6480 KB Output is correct
86 Correct 234 ms 6480 KB Output is correct
87 Correct 145 ms 6428 KB Output is correct
88 Correct 280 ms 6572 KB Output is correct
89 Correct 538 ms 7232 KB Output is correct
90 Correct 141 ms 6224 KB Output is correct
91 Correct 489 ms 7168 KB Output is correct
92 Correct 333 ms 6740 KB Output is correct