oj.uz

Submission #953300

# Submission time Handle Problem Language Result Execution time Memory
953300 2024-03-25T19:36:07 Z snowman Mecho (IOI09_mecho) C++17
0 / 100
 281 ms 6500 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
0.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Incorrect 0 ms 344 KB Output isn't correct
5 Incorrect 1 ms 348 KB Output isn't correct
6 Incorrect 0 ms 348 KB Output isn't correct
7 Incorrect 129 ms 6204 KB Output isn't correct
8 Correct 0 ms 344 KB Output is correct
9 Incorrect 1 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 0 ms 348 KB Output isn't correct
14 Incorrect 1 ms 348 KB Output isn't correct
15 Incorrect 0 ms 348 KB Output isn't correct
16 Incorrect 0 ms 348 KB Output isn't correct
17 Incorrect 1 ms 348 KB Output isn't correct
18 Incorrect 0 ms 348 KB Output isn't correct
19 Incorrect 0 ms 348 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 344 KB Output isn't correct
24 Incorrect 1 ms 348 KB Output isn't correct
25 Incorrect 0 ms 348 KB Output isn't correct
26 Incorrect 1 ms 600 KB Output isn't correct
27 Incorrect 1 ms 344 KB Output isn't correct
28 Incorrect 1 ms 348 KB Output isn't correct
29 Incorrect 1 ms 348 KB Output isn't correct
30 Incorrect 1 ms 348 KB Output isn't correct
31 Incorrect 1 ms 348 KB Output isn't correct
32 Incorrect 1 ms 348 KB Output isn't correct
33 Incorrect 7 ms 1520 KB Output isn't correct
34 Incorrect 23 ms 1372 KB Output isn't correct
35 Incorrect 34 ms 1560 KB Output isn't correct
36 Incorrect 9 ms 1756 KB Output isn't correct
37 Incorrect 32 ms 1884 KB Output isn't correct
38 Incorrect 52 ms 1896 KB Output isn't correct
39 Incorrect 12 ms 2228 KB Output isn't correct
40 Incorrect 39 ms 2140 KB Output isn't correct
41 Incorrect 59 ms 2248 KB Output isn't correct
42 Incorrect 15 ms 2696 KB Output isn't correct
43 Incorrect 48 ms 2456 KB Output isn't correct
44 Incorrect 74 ms 2700 KB Output isn't correct
45 Incorrect 18 ms 3132 KB Output isn't correct
46 Incorrect 62 ms 2908 KB Output isn't correct
47 Incorrect 90 ms 3132 KB Output isn't correct
48 Incorrect 21 ms 3672 KB Output isn't correct
49 Incorrect 78 ms 3416 KB Output isn't correct
50 Incorrect 116 ms 3728 KB Output isn't correct
51 Incorrect 24 ms 4188 KB Output isn't correct
52 Incorrect 87 ms 4224 KB Output isn't correct
53 Incorrect 126 ms 4224 KB Output isn't correct
54 Incorrect 27 ms 4692 KB Output isn't correct
55 Incorrect 98 ms 4816 KB Output isn't correct
56 Incorrect 166 ms 5060 KB Output isn't correct
57 Incorrect 36 ms 5352 KB Output isn't correct
58 Incorrect 118 ms 5464 KB Output isn't correct
59 Incorrect 176 ms 5464 KB Output isn't correct
60 Incorrect 38 ms 6156 KB Output isn't correct
61 Incorrect 134 ms 5972 KB Output isn't correct
62 Incorrect 219 ms 6188 KB Output isn't correct
63 Incorrect 119 ms 6152 KB Output isn't correct
64 Incorrect 281 ms 6156 KB Output isn't correct
65 Incorrect 162 ms 6140 KB Output isn't correct
66 Incorrect 147 ms 6160 KB Output isn't correct
67 Incorrect 137 ms 6324 KB Output isn't correct
68 Incorrect 87 ms 6196 KB Output isn't correct
69 Incorrect 79 ms 6172 KB Output isn't correct
70 Incorrect 65 ms 6188 KB Output isn't correct
71 Incorrect 64 ms 6232 KB Output isn't correct
72 Incorrect 50 ms 6128 KB Output isn't correct
73 Incorrect 68 ms 6240 KB Output isn't correct
74 Incorrect 113 ms 6224 KB Output isn't correct
75 Incorrect 98 ms 6216 KB Output isn't correct
76 Incorrect 102 ms 6396 KB Output isn't correct
77 Incorrect 105 ms 6228 KB Output isn't correct
78 Incorrect 108 ms 6220 KB Output isn't correct
79 Incorrect 100 ms 6220 KB Output isn't correct
80 Incorrect 92 ms 6500 KB Output isn't correct
81 Incorrect 102 ms 6236 KB Output isn't correct
82 Incorrect 89 ms 6196 KB Output isn't correct
83 Incorrect 112 ms 6244 KB Output isn't correct
84 Incorrect 126 ms 6416 KB Output isn't correct
85 Incorrect 100 ms 6232 KB Output isn't correct
86 Incorrect 106 ms 6236 KB Output isn't correct
87 Incorrect 116 ms 6216 KB Output isn't correct
88 Incorrect 115 ms 6192 KB Output isn't correct
89 Incorrect 150 ms 6128 KB Output isn't correct
90 Incorrect 135 ms 6188 KB Output isn't correct
91 Incorrect 138 ms 6448 KB Output isn't correct
92 Incorrect 119 ms 6188 KB Output isn't correct