oj.uz

Submission #953298

# Submission time Handle Problem Language Result Execution time Memory
953298 2024-03-25T19:34:29 Z snowman Mecho (IOI09_mecho) C++17
4 / 100
 254 ms 6460 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;
            }
        }
    }
    if(bees[start.st][start.nd] == INT_MAX){
        cout << -1 << '\n';
        return;
    }
    int l = 0, r = 2 * n * n;
    int ans = -1;
    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){
            cout << mid << ' ' << ans << '\n';
            ans = max(ans, mid);
            l = mid + 1;
        }
        else r = mid - 1;
    }
    // cout << ans << '\n';
    if(ans == -1){
        cout << -1<< '\n';
    }
    else 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
4.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Incorrect 1 ms 500 KB Output isn't correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Incorrect 1 ms 344 KB Output isn't correct
6 Incorrect 1 ms 348 KB Output isn't correct
7 Incorrect 130 ms 6204 KB Output isn't correct
8 Correct 0 ms 348 KB Output is correct
9 Incorrect 0 ms 348 KB Output isn't correct
10 Incorrect 0 ms 348 KB Output isn't correct
11 Incorrect 0 ms 348 KB Output isn't correct
12 Incorrect 0 ms 348 KB Output isn't correct
13 Incorrect 1 ms 348 KB Output isn't correct
14 Correct 1 ms 348 KB Output is correct
15 Incorrect 0 ms 348 KB Output isn't correct
16 Incorrect 0 ms 348 KB Output isn't correct
17 Incorrect 0 ms 344 KB Output isn't correct
18 Incorrect 0 ms 348 KB Output isn't correct
19 Incorrect 1 ms 432 KB Output isn't correct
20 Incorrect 0 ms 348 KB Output isn't correct
21 Incorrect 0 ms 348 KB Output isn't correct
22 Incorrect 0 ms 348 KB Output isn't correct
23 Incorrect 1 ms 348 KB Output isn't correct
24 Incorrect 1 ms 348 KB Output isn't correct
25 Incorrect 1 ms 348 KB Output isn't correct
26 Incorrect 1 ms 348 KB Output isn't correct
27 Incorrect 1 ms 344 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 348 KB Output isn't correct
32 Incorrect 2 ms 348 KB Output isn't correct
33 Incorrect 7 ms 1516 KB Output isn't correct
34 Incorrect 23 ms 1372 KB Output isn't correct
35 Incorrect 37 ms 1552 KB Output isn't correct
36 Incorrect 9 ms 2080 KB Output isn't correct
37 Incorrect 31 ms 1884 KB Output isn't correct
38 Incorrect 51 ms 1884 KB Output isn't correct
39 Incorrect 12 ms 2224 KB Output isn't correct
40 Incorrect 40 ms 2140 KB Output isn't correct
41 Incorrect 60 ms 2232 KB Output isn't correct
42 Incorrect 14 ms 2696 KB Output isn't correct
43 Incorrect 48 ms 2648 KB Output isn't correct
44 Incorrect 73 ms 2680 KB Output isn't correct
45 Incorrect 18 ms 3116 KB Output isn't correct
46 Incorrect 60 ms 2904 KB Output isn't correct
47 Incorrect 90 ms 3132 KB Output isn't correct
48 Incorrect 23 ms 3652 KB Output isn't correct
49 Incorrect 72 ms 3420 KB Output isn't correct
50 Incorrect 126 ms 3648 KB Output isn't correct
51 Incorrect 24 ms 4184 KB Output isn't correct
52 Incorrect 86 ms 4184 KB Output isn't correct
53 Incorrect 131 ms 4324 KB Output isn't correct
54 Incorrect 28 ms 4672 KB Output isn't correct
55 Incorrect 100 ms 4816 KB Output isn't correct
56 Incorrect 153 ms 4820 KB Output isn't correct
57 Incorrect 32 ms 5412 KB Output isn't correct
58 Incorrect 147 ms 5604 KB Output isn't correct
59 Incorrect 175 ms 5464 KB Output isn't correct
60 Incorrect 36 ms 6128 KB Output isn't correct
61 Incorrect 135 ms 5980 KB Output isn't correct
62 Incorrect 206 ms 6316 KB Output isn't correct
63 Incorrect 118 ms 6152 KB Output isn't correct
64 Incorrect 254 ms 5952 KB Output isn't correct
65 Incorrect 160 ms 6352 KB Output isn't correct
66 Incorrect 141 ms 6164 KB Output isn't correct
67 Correct 127 ms 6156 KB Output is correct
68 Incorrect 86 ms 6196 KB Output isn't correct
69 Incorrect 76 ms 6176 KB Output isn't correct
70 Incorrect 62 ms 6220 KB Output isn't correct
71 Incorrect 63 ms 6256 KB Output isn't correct
72 Incorrect 47 ms 6192 KB Output isn't correct
73 Incorrect 68 ms 6240 KB Output isn't correct
74 Incorrect 105 ms 6328 KB Output isn't correct
75 Incorrect 99 ms 6216 KB Output isn't correct
76 Incorrect 92 ms 6276 KB Output isn't correct
77 Incorrect 107 ms 6200 KB Output isn't correct
78 Correct 109 ms 6216 KB Output is correct
79 Incorrect 104 ms 6224 KB Output isn't correct
80 Incorrect 90 ms 6244 KB Output isn't correct
81 Incorrect 100 ms 6212 KB Output isn't correct
82 Incorrect 89 ms 6196 KB Output isn't correct
83 Incorrect 114 ms 6236 KB Output isn't correct
84 Incorrect 116 ms 6124 KB Output isn't correct
85 Incorrect 111 ms 6212 KB Output isn't correct
86 Incorrect 105 ms 6216 KB Output isn't correct
87 Incorrect 115 ms 6216 KB Output isn't correct
88 Incorrect 116 ms 6256 KB Output isn't correct
89 Incorrect 140 ms 6012 KB Output isn't correct
90 Incorrect 122 ms 6460 KB Output isn't correct
91 Incorrect 137 ms 6192 KB Output isn't correct
92 Incorrect 117 ms 6192 KB Output isn't correct