oj.uz

Submission #953284

# Submission time Handle Problem Language Result Execution time Memory
953284 2024-03-25T19:17:05 Z snowman Mecho (IOI09_mecho) C++17
6 / 100
 549 ms 65536 KB 
#include <bits/stdc++.h>
using namespace std;
//Soltan Cristian
#define ll long long
#define all(x) x.begin(), x.end()
#define mod 1000000007
#define pb push_back
#define st first
#define nd second
#define sz(x) (ll)x.size()
#define rall(x) x.rbegin(), x.rend()

const int dx[] = {-1, 0, 1, 0};
const int dy[] = {0, 1, 0, -1};

const int mxa = 2 * 1e5 + 2;
// string __fname = "maxflow";  
// ifstream in(__fname + ".in"); 
// ofstream out (__fname + ".out"); 
// #define cin in 
// #define cout out
int n, s;
vector<vector<char>> mapa;

bool validB(int x, int y){
    if(x >= 0 && x < n && y >= 0 && y < n && mapa[x][y] != 'T' && mapa[x][y] != 'D'){
        return true;
    }
    return false;
}

bool valid(int x, int y){
    if(x >= 0 && x < n && y >= 0 && y < n && mapa[x][y] != 'T'){
        return true;
    }
    return false;
}


void solve(){
    cin >> n >> s;
    mapa = vector<vector<char>>(n, vector<char>(n));
    vector<pair<int,int>> stup;
    pair<int, int> start, finish;
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            char x;
            cin >> x;
            if(x == 'H') stup.pb({i, j});
            if(x == 'M') start = {i, j};
            if(x == 'D') finish = {i, j};
            mapa[i][j] = x;
        }
    }
    vector<vector<int>> bees(n, vector<int>(n, INT_MAX));
    queue<pair<int, int>> qB;
    for(int i = 0; i < sz(stup); i++){
        bees[stup[i].st][stup[i].nd] = 0;
        qB.push({stup[i].st, stup[i].nd});
    }
    // cout << "a\n";
    while(!qB.empty()){
        pair<int, int> u = qB.front();
        qB.pop();
        for(int i = 0; i < 4; i++){
            if(!validB(u.st + dx[i], u.nd + dy[i])) continue;
            if(bees[u.st][u.nd] + s <= bees[u.st + dx[i]][u.nd + dy[i]]){
                qB.push({u.st + dx[i], u.nd + dy[i]});
                bees[u.st + dx[i]][u.nd + dy[i]] = bees[u.st][u.nd] + s;
            }
        }
    }

    int l = 0, r = n * n;
    int ans = 0;
    while(l <= r){
        int mid = (l + r) / 2;
        vector<vector<int>> h(n, vector<int>(n, INT_MAX));
        h[start.st][start.nd] = mid;
        queue<pair<int,int>> q;
        q.push({start.st, start.nd});
        while(!q.empty()){
            pair<int, int> u = q.front();
            q.pop();
            for(int i = 0; i < 4; i++){
                if(!valid(u.st + dx[i], u.nd + dy[i])) continue;
                if(h[u.st][u.nd] + 1 <= bees[u.st + dx[i]][u.nd + dy[i]] && 
                            h[u.st][u.nd] + 1 <= h[u.st + dx[i]][u.nd + dy[i]]){
                    q.push({u.st + dx[i], u.nd + dy[i]});
                    h[u.st + dx[i]][u.nd + dy[i]] = h[u.st][u.nd] + 1;
                }
            }
        }
        if(h[finish.st][finish.nd] < INT_MAX){
            ans = max(ans, mid);
            l = mid + 1;
        }
        else r = mid - 1;
    }
    // cout << ans << '\n';
    cout << ans / s << '\n';


}
 
 
int main()
{   
    // ios_base::sync_with_stdio(0); cin.tie(0); cout << fixed  << (setprecision(10)); 
    // int t;
    // cin >> t;
    // while(t--)
        solve();
    return 0;
}

Subtask #1
6.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Incorrect 1 ms 348 KB Output isn't correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Runtime error 289 ms 65536 KB Execution killed with signal 9
8 Incorrect 1 ms 344 KB Output isn't correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Incorrect 1 ms 600 KB Output isn't correct
13 Runtime error 342 ms 65536 KB Execution killed with signal 9
14 Runtime error 476 ms 65536 KB Execution killed with signal 9
15 Incorrect 0 ms 356 KB Output isn't correct
16 Incorrect 0 ms 444 KB Output isn't correct
17 Incorrect 1 ms 356 KB Output isn't correct
18 Incorrect 1 ms 360 KB Output isn't correct
19 Incorrect 0 ms 356 KB Output isn't correct
20 Incorrect 1 ms 352 KB Output isn't correct
21 Incorrect 1 ms 352 KB Output isn't correct
22 Incorrect 1 ms 352 KB Output isn't correct
23 Incorrect 1 ms 352 KB Output isn't correct
24 Incorrect 1 ms 348 KB Output isn't correct
25 Incorrect 1 ms 344 KB Output isn't correct
26 Incorrect 1 ms 348 KB Output isn't correct
27 Incorrect 1 ms 348 KB Output isn't correct
28 Incorrect 1 ms 344 KB Output isn't correct
29 Incorrect 1 ms 348 KB Output isn't correct
30 Incorrect 2 ms 348 KB Output isn't correct
31 Incorrect 1 ms 432 KB Output isn't correct
32 Incorrect 1 ms 348 KB Output isn't correct
33 Incorrect 9 ms 1628 KB Output isn't correct
34 Incorrect 25 ms 1652 KB Output isn't correct
35 Runtime error 250 ms 65536 KB Execution killed with signal 9
36 Incorrect 17 ms 1888 KB Output isn't correct
37 Incorrect 48 ms 1880 KB Output isn't correct
38 Runtime error 248 ms 65536 KB Execution killed with signal 9
39 Incorrect 15 ms 2440 KB Output isn't correct
40 Incorrect 41 ms 2436 KB Output isn't correct
41 Runtime error 248 ms 65536 KB Execution killed with signal 9
42 Incorrect 26 ms 2844 KB Output isn't correct
43 Incorrect 70 ms 2896 KB Output isn't correct
44 Runtime error 257 ms 65536 KB Execution killed with signal 9
45 Incorrect 32 ms 3312 KB Output isn't correct
46 Incorrect 64 ms 3348 KB Output isn't correct
47 Runtime error 284 ms 65536 KB Execution killed with signal 9
48 Incorrect 27 ms 3952 KB Output isn't correct
49 Incorrect 76 ms 3924 KB Output isn't correct
50 Runtime error 249 ms 65536 KB Execution killed with signal 9
51 Incorrect 30 ms 4420 KB Output isn't correct
52 Incorrect 92 ms 4780 KB Output isn't correct
53 Runtime error 255 ms 65536 KB Execution killed with signal 9
54 Incorrect 35 ms 5132 KB Output isn't correct
55 Incorrect 105 ms 5184 KB Output isn't correct
56 Runtime error 250 ms 65536 KB Execution killed with signal 9
57 Incorrect 40 ms 5844 KB Output isn't correct
58 Incorrect 153 ms 5824 KB Output isn't correct
59 Runtime error 252 ms 65536 KB Execution killed with signal 9
60 Incorrect 49 ms 6692 KB Output isn't correct
61 Incorrect 164 ms 6600 KB Output isn't correct
62 Runtime error 266 ms 65536 KB Execution killed with signal 9
63 Correct 141 ms 6564 KB Output is correct
64 Incorrect 327 ms 6748 KB Output isn't correct
65 Correct 188 ms 6608 KB Output is correct
66 Incorrect 162 ms 6620 KB Output isn't correct
67 Incorrect 129 ms 6584 KB Output isn't correct
68 Correct 90 ms 6620 KB Output is correct
69 Correct 83 ms 6588 KB Output is correct
70 Correct 77 ms 6624 KB Output is correct
71 Correct 67 ms 6640 KB Output is correct
72 Incorrect 56 ms 6640 KB Output isn't correct
73 Runtime error 519 ms 65536 KB Execution killed with signal 9
74 Runtime error 516 ms 65536 KB Execution killed with signal 9
75 Runtime error 549 ms 65536 KB Execution killed with signal 9
76 Runtime error 520 ms 65536 KB Execution killed with signal 9
77 Runtime error 514 ms 65536 KB Execution killed with signal 9
78 Runtime error 456 ms 65536 KB Execution killed with signal 9
79 Runtime error 460 ms 65536 KB Execution killed with signal 9
80 Runtime error 417 ms 65536 KB Execution killed with signal 9
81 Runtime error 415 ms 65536 KB Execution killed with signal 9
82 Runtime error 422 ms 65536 KB Execution killed with signal 9
83 Runtime error 349 ms 65536 KB Execution killed with signal 9
84 Runtime error 405 ms 65536 KB Execution killed with signal 9
85 Runtime error 353 ms 65536 KB Execution killed with signal 9
86 Runtime error 354 ms 65536 KB Execution killed with signal 9
87 Runtime error 366 ms 65536 KB Execution killed with signal 9
88 Runtime error 312 ms 65536 KB Execution killed with signal 9
89 Runtime error 337 ms 65536 KB Execution killed with signal 9
90 Runtime error 312 ms 65536 KB Execution killed with signal 9
91 Runtime error 327 ms 65536 KB Execution killed with signal 9
92 Runtime error 318 ms 65536 KB Execution killed with signal 9