oj.uz

Submission #581486

# Submission time Handle Problem Language Result Execution time Memory
581486 2022-06-22T16:59:52 Z Saeed_247 Mecho (IOI09_mecho) C++14
47 / 100
 233 ms 11348 KB 
#include <bits/stdc++.h>
using namespace std;
template<typename T> void dout(string name, T arg) {
    cerr << name << " = " << arg << "\e[39m" << endl;
}
template<typename T1, typename... T2> void dout(string names, T1 arg, T2... args) {
    cerr << names.substr(0, names.find(',')) << " = " << arg << " | ";
    dout(names.substr(names.find(',') + 2), args...);
}
#define debug(...) cerr << "\e[91m" << "[" << __LINE__ << ":" << __func__ << "]=> ", dout(#__VA_ARGS__,  __VA_ARGS__);

const pair<int, int> dir[] = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
long long n, s;
vector<vector<char>> arr;
vector<pair<int, int>> hives;
pair<int, int> m, d;
queue<pair<int, int>> q;

bool move(int x, int y) {
    return x >= 0 && y >= 0 && x < n && y < n;
}

bool check(long long tim, vector<vector<long long>>& dist, vector<vector<long long>>& swarm) {
    vector<vector<bool>> visited(n, vector<bool>(n, false));
    while (q.size()) q.pop();
    q.push(m);
    visited[m.first][m.second] = true;
    while (!q.empty()) {
        auto [x, y] = q.front();
        if (q.front() == d) return true;
        q.pop();
        for (auto [xx, yy] : dir) if (move(x + xx, y + yy) && (arr[x + xx][y + yy] == 'G' || 
            arr[x + xx][y + yy] == 'D') && !visited[x + xx][y + yy] && (dist[x + xx][y + yy] + tim < swarm[x + xx][y + yy] || 
                (dist[x + xx][y + yy] + tim == swarm[x + xx][y + yy] && dist[d.first][d.second] == dist[x + xx][y + yy]))) {
                q.push({x + xx, y + yy});
                visited[x + xx][y + yy] = true;
        }
    }
    return false;
}

int main() {
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin >> n >> s;
    arr.resize(n, vector<char> (n));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cin >> arr[i][j];
            if (arr[i][j] == 'M') {
                m = {i, j};
            }
            if (arr[i][j] == 'H') {
                hives.push_back({i, j});
            }
            if (arr[i][j] == 'D') {
                d = {i, j};
            }
        }
    }

    vector<vector<long long>> dist(n, vector<long long>(n, INT_MAX)), swarm(n, vector<long long>(n, INT_MAX));
    dist[m.first][m.second] = 0;
    q.push(m);
    while (!q.empty()) {
        auto [x, y] = q.front();
        q.pop();
        for (auto [xx, yy] : dir) if (move(x + xx, y + yy) && (arr[x + xx][y + yy] == 'G' || 
            arr[x + xx][y + yy] == 'D') && dist[x + xx][y + yy] > dist[x][y] + 1) {
                dist[x + xx][y + yy] = dist[x][y] + 1;
                q.push({x + xx, y + yy});
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            dist[i][j] = dist[i][j] / s + (dist[i][j] % s != 0);
        }
    }
    for (auto [x, y] : hives) {
        swarm[x][y] = 0;
        q.push({x, y});
    }
    while (!q.empty()) {
        auto [x, y] = q.front();
        q.pop();
        for (auto [xx, yy] : dir) if (move(x + xx, y + yy) && arr[x + xx][y + yy] == 'G' && swarm[x + xx][y + yy] > swarm[x][y] + 1) {
                swarm[x + xx][y + yy] = swarm[x][y] + 1;
                q.push({x + xx, y + yy});
        }
    }

    long long l = 0, h = 640000;
    while (h - l > 1) {
        int mid = (h + l) / 2;
        if (check(mid, dist, swarm)) l = mid;
        else h = mid;
    }
    cout << l << '\n';
    return 0;
}

Compilation message

mecho.cpp: In function 'bool check(long long int, std::vector<std::vector<long long int> >&, std::vector<std::vector<long long int> >&)':
mecho.cpp:29:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   29 |         auto [x, y] = q.front();
      |              ^
mecho.cpp:32:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   32 |         for (auto [xx, yy] : dir) if (move(x + xx, y + yy) && (arr[x + xx][y + yy] == 'G' ||
      |                   ^
mecho.cpp: In function 'int main()':
mecho.cpp:65:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   65 |         auto [x, y] = q.front();
      |              ^
mecho.cpp:67:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   67 |         for (auto [xx, yy] : dir) if (move(x + xx, y + yy) && (arr[x + xx][y + yy] == 'G' ||
      |                   ^
mecho.cpp:78:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   78 |     for (auto [x, y] : hives) {
      |               ^
mecho.cpp:83:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   83 |         auto [x, y] = q.front();
      |              ^
mecho.cpp:85:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   85 |         for (auto [xx, yy] : dir) if (move(x + xx, y + yy) && arr[x + xx][y + yy] == 'G' && swarm[x + xx][y + yy] > swarm[x][y] + 1) {
      |                   ^

Subtask #1
47.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 112 ms 11176 KB Output is correct
8 Incorrect 0 ms 212 KB Output isn't correct
9 Incorrect 0 ms 212 KB Output isn't correct
10 Incorrect 0 ms 212 KB Output isn't correct
11 Incorrect 1 ms 212 KB Output isn't correct
12 Incorrect 1 ms 340 KB Output isn't correct
13 Correct 1 ms 340 KB Output is correct
14 Incorrect 1 ms 340 KB Output isn't correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 7 ms 2388 KB Output is correct
34 Correct 7 ms 2388 KB Output is correct
35 Incorrect 24 ms 2436 KB Output isn't correct
36 Correct 11 ms 3072 KB Output is correct
37 Correct 12 ms 3156 KB Output is correct
38 Incorrect 30 ms 3028 KB Output isn't correct
39 Correct 10 ms 3740 KB Output is correct
40 Correct 11 ms 3668 KB Output is correct
41 Incorrect 39 ms 3744 KB Output isn't correct
42 Correct 15 ms 4564 KB Output is correct
43 Correct 14 ms 4564 KB Output is correct
44 Incorrect 52 ms 4544 KB Output isn't correct
45 Correct 19 ms 5424 KB Output is correct
46 Correct 16 ms 5416 KB Output is correct
47 Incorrect 61 ms 5532 KB Output isn't correct
48 Correct 19 ms 6356 KB Output is correct
49 Correct 23 ms 6376 KB Output is correct
50 Incorrect 84 ms 6440 KB Output isn't correct
51 Correct 22 ms 7500 KB Output is correct
52 Correct 20 ms 7508 KB Output is correct
53 Incorrect 90 ms 7380 KB Output isn't correct
54 Correct 27 ms 8532 KB Output is correct
55 Correct 26 ms 8532 KB Output is correct
56 Incorrect 120 ms 8636 KB Output isn't correct
57 Correct 34 ms 9748 KB Output is correct
58 Correct 28 ms 9768 KB Output is correct
59 Incorrect 130 ms 9856 KB Output isn't correct
60 Correct 36 ms 11092 KB Output is correct
61 Correct 35 ms 11056 KB Output is correct
62 Incorrect 154 ms 11184 KB Output isn't correct
63 Correct 129 ms 11220 KB Output is correct
64 Incorrect 209 ms 11084 KB Output isn't correct
65 Incorrect 233 ms 11172 KB Output isn't correct
66 Correct 172 ms 11176 KB Output is correct
67 Incorrect 142 ms 11168 KB Output isn't correct
68 Correct 77 ms 11068 KB Output is correct
69 Incorrect 67 ms 11076 KB Output isn't correct
70 Incorrect 67 ms 11068 KB Output isn't correct
71 Incorrect 80 ms 11056 KB Output isn't correct
72 Incorrect 66 ms 11080 KB Output isn't correct
73 Incorrect 95 ms 11344 KB Output isn't correct
74 Correct 84 ms 11348 KB Output is correct
75 Correct 100 ms 11336 KB Output is correct
76 Correct 105 ms 11332 KB Output is correct
77 Correct 134 ms 11344 KB Output is correct
78 Incorrect 107 ms 11320 KB Output isn't correct
79 Correct 71 ms 11320 KB Output is correct
80 Correct 84 ms 11328 KB Output is correct
81 Correct 124 ms 11320 KB Output is correct
82 Correct 87 ms 11312 KB Output is correct
83 Correct 118 ms 11276 KB Output is correct
84 Correct 108 ms 11208 KB Output is correct
85 Correct 99 ms 11276 KB Output is correct
86 Correct 116 ms 11272 KB Output is correct
87 Correct 115 ms 11200 KB Output is correct
88 Correct 111 ms 11320 KB Output is correct
89 Correct 114 ms 11220 KB Output is correct
90 Correct 117 ms 11208 KB Output is correct
91 Correct 112 ms 11244 KB Output is correct
92 Correct 128 ms 11196 KB Output is correct