Submission #886616

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
886616	2023-12-12T12:28:45 Z	gnu	Mecho (IOI09_mecho)	C++14	18 / 100	120 ms	22648 KB

mecho

#include <bits/stdc++.h>
using namespace std;
int n, S;
vector<string> board;
vector<vector<int>> vis;
vector<int> dx = {1, 0, -1, 0};
vector<int> dy = {0, 1, 0, -1};
struct point{
    int i, j;
    point(int i, int j) {
        this->i = i;
        this->j = j;
    }
};
void solve()
{
    n, S; cin >> n >> S;
    board = vector<string>(n);
    vis = vector<vector<int>> (n, vector<int> (n));
    for (int i = 0; i < n; ++i) cin >> board[i];
    point mecho(0,0), home(0,0);
    vector<point> honey;
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            if (board[i][j] == 'H') honey.emplace_back(i, j);
            else if (board[i][j] == 'M') mecho = {i, j};
            else if (board[i][j] == 'D') home = {i, j};
        }
    }
    queue<point> mq;
    vector<vector<int>> dist(n, vector<int> (n, 1e9   ));
    for (auto x : honey) {
        mq.push(x);
        vis[x.i][x.j] = 1;
        dist[x.i][x.j] = 0;
    }
    while (!mq.empty()) {
        point u = mq.front();
        mq.pop();
        for (int i = 0; i < 4; ++i) {
            if (u.i + dx[i] < 0 || u.i + dx[i] >= n || u.j + dy[i] < 0 || u.j + dy[i] >= n || vis[u.i+dx[i]][u.j+dy[i]] || (board[u.i+dx[i]][u.j+dy[i]] != 'G' && board[u.i+dx[i]][u.j+dy[i]] != 'M')) continue;
            mq.emplace(u.i + dx[i], u.j + dy[i]);
            vis[u.i + dx[i]][u.j + dy[i]] = 1;
            dist[u.i + dx[i]][u.j + dy[i]] = dist[u.i][u.j] + 1;
        }
    }
//    for (auto &x : dist)
//    {
//        for (auto y : x) cout << y << ' ';
//        cout << '\n';
//    }

    int l = -1, r = 1e9;
//    return;
    while (l + 1 < r) {
        vector<vector<int>> md(n, vector<int> (n));
        int m = (l + r) / 2;
        vis = vector<vector<int>> (n, vector<int> (n));
        queue<point> q;
        q.emplace(mecho.i, mecho.j);
        vis[mecho.i][mecho.j] = 1;
        if (m >= dist[mecho.i][mecho.j]) q.pop();
        while (!q.empty()) {
            point u = q.front();

            q.pop();
            for (int i = 0; i < 4; ++i) {
                int ni = u.i + dx[i], nj = u.j + dy[i];
                if (((md[u.i][u.j]+1) / S >= (dist[u.i][u.j] - m))) continue;
                if (u.i + dx[i] < 0 || u.i + dx[i] >= n || u.j + dy[i] < 0 || u.j + dy[i] >= n || vis[u.i+dx[i]][u.j+dy[i]] || (board[u.i+dx[i]][u.j+dy[i]] != 'G' && board[u.i+dx[i]][u.j+dy[i]] != 'M')) continue;
                q.emplace(ni, nj);
                md[ni][nj] = md[u.i][u.j] + 1;
                vis[ni][nj] = 1;
            }
        }
        bool ok = false;
        for (int i = 0; i < 4; ++i) {
            point u = home;
            if (((md[u.i][u.j]+1) / S >= (dist[u.i + dx[i]][u.j + dy[i]] - m))) continue;
            if (u.i + dx[i] < 0 || u.i + dx[i] >= n || u.j + dy[i] < 0 || u.j + dy[i] >= n || (board[u.i+dx[i]][u.j+dy[i]] != 'G' && board[u.i+dx[i]][u.j+dy[i]] != 'M')) continue;
            if (vis[home.i + dx[i]][home.j+dy[i]]) ok = true;
        }
        if (ok) {
            l = m;
        } else r = m;

    }
    cout << l;

}

int main()
{
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    solve();
}

Compilation message

mecho.cpp: In function 'void solve()':
mecho.cpp:17:5: warning: left operand of comma operator has no effect [-Wunused-value]
   17 |     n, S; cin >> n >> S;
      |     ^
mecho.cpp:17:9: warning: right operand of comma operator has no effect [-Wunused-value]
   17 |     n, S; cin >> n >> S;
      |         ^

Subtask #1

18.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	1 ms	604 KB	Execution killed with signal 11
2	Runtime error	1 ms	348 KB	Execution killed with signal 11
3	Runtime error	1 ms	604 KB	Execution killed with signal 11
4	Runtime error	1 ms	604 KB	Execution killed with signal 11
5	Correct	0 ms	348 KB	Output is correct
6	Runtime error	1 ms	348 KB	Execution killed with signal 11
7	Incorrect	111 ms	11372 KB	Output isn't correct
8	Runtime error	1 ms	348 KB	Execution killed with signal 11
9	Runtime error	1 ms	604 KB	Execution killed with signal 11
10	Runtime error	1 ms	604 KB	Execution killed with signal 11
11	Runtime error	1 ms	604 KB	Execution killed with signal 11
12	Runtime error	1 ms	604 KB	Execution killed with signal 11
13	Correct	1 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Runtime error	1 ms	604 KB	Execution killed with signal 11
16	Correct	0 ms	348 KB	Output is correct
17	Runtime error	1 ms	604 KB	Execution killed with signal 11
18	Correct	0 ms	348 KB	Output is correct
19	Runtime error	1 ms	604 KB	Execution killed with signal 11
20	Correct	1 ms	348 KB	Output is correct
21	Runtime error	1 ms	600 KB	Execution killed with signal 11
22	Correct	0 ms	348 KB	Output is correct
23	Runtime error	1 ms	604 KB	Execution killed with signal 11
24	Correct	0 ms	348 KB	Output is correct
25	Runtime error	1 ms	604 KB	Execution killed with signal 11
26	Correct	0 ms	348 KB	Output is correct
27	Runtime error	1 ms	604 KB	Execution killed with signal 11
28	Correct	1 ms	348 KB	Output is correct
29	Runtime error	1 ms	604 KB	Execution killed with signal 11
30	Correct	1 ms	348 KB	Output is correct
31	Runtime error	1 ms	604 KB	Execution killed with signal 11
32	Correct	1 ms	348 KB	Output is correct
33	Runtime error	4 ms	4700 KB	Execution killed with signal 11
34	Correct	7 ms	2548 KB	Output is correct
35	Runtime error	5 ms	4700 KB	Execution killed with signal 11
36	Runtime error	7 ms	6232 KB	Execution killed with signal 11
37	Correct	9 ms	3240 KB	Output is correct
38	Runtime error	6 ms	5980 KB	Execution killed with signal 11
39	Runtime error	8 ms	7572 KB	Execution killed with signal 11
40	Correct	10 ms	3884 KB	Output is correct
41	Runtime error	7 ms	7516 KB	Execution killed with signal 11
42	Runtime error	8 ms	9052 KB	Execution killed with signal 11
43	Correct	11 ms	4724 KB	Output is correct
44	Runtime error	9 ms	9052 KB	Execution killed with signal 11
45	Runtime error	9 ms	10844 KB	Execution killed with signal 11
46	Correct	16 ms	5612 KB	Output is correct
47	Runtime error	13 ms	10844 KB	Execution killed with signal 11
48	Runtime error	12 ms	12920 KB	Execution killed with signal 11
49	Correct	21 ms	6596 KB	Output is correct
50	Runtime error	15 ms	12896 KB	Execution killed with signal 11
51	Runtime error	13 ms	14940 KB	Execution killed with signal 11
52	Correct	21 ms	7640 KB	Output is correct
53	Runtime error	21 ms	14980 KB	Execution killed with signal 11
54	Runtime error	15 ms	17248 KB	Execution killed with signal 11
55	Correct	27 ms	8812 KB	Output is correct
56	Runtime error	18 ms	17244 KB	Execution killed with signal 11
57	Runtime error	17 ms	19804 KB	Execution killed with signal 11
58	Correct	24 ms	9980 KB	Output is correct
59	Runtime error	21 ms	19804 KB	Execution killed with signal 11
60	Runtime error	20 ms	22360 KB	Execution killed with signal 11
61	Correct	29 ms	11324 KB	Output is correct
62	Runtime error	23 ms	22356 KB	Execution killed with signal 11
63	Runtime error	33 ms	22356 KB	Execution killed with signal 11
64	Runtime error	29 ms	22352 KB	Execution killed with signal 11
65	Runtime error	29 ms	22356 KB	Execution killed with signal 11
66	Runtime error	31 ms	22356 KB	Execution killed with signal 11
67	Runtime error	29 ms	22352 KB	Execution killed with signal 11
68	Runtime error	32 ms	22612 KB	Execution killed with signal 11
69	Runtime error	32 ms	22620 KB	Execution killed with signal 11
70	Runtime error	33 ms	22376 KB	Execution killed with signal 11
71	Runtime error	34 ms	22572 KB	Execution killed with signal 11
72	Runtime error	35 ms	22380 KB	Execution killed with signal 11
73	Runtime error	32 ms	22616 KB	Execution killed with signal 11
74	Runtime error	30 ms	22648 KB	Execution killed with signal 11
75	Runtime error	29 ms	22620 KB	Execution killed with signal 11
76	Runtime error	27 ms	22456 KB	Execution killed with signal 11
77	Runtime error	27 ms	22616 KB	Execution killed with signal 11
78	Correct	89 ms	11404 KB	Output is correct
79	Incorrect	85 ms	11368 KB	Output isn't correct
80	Incorrect	80 ms	11440 KB	Output isn't correct
81	Incorrect	97 ms	11316 KB	Output isn't correct
82	Incorrect	74 ms	11384 KB	Output isn't correct
83	Incorrect	105 ms	11420 KB	Output isn't correct
84	Incorrect	102 ms	11348 KB	Output isn't correct
85	Incorrect	98 ms	11388 KB	Output isn't correct
86	Incorrect	116 ms	11372 KB	Output isn't correct
87	Incorrect	92 ms	11368 KB	Output isn't correct
88	Incorrect	98 ms	11548 KB	Output isn't correct
89	Incorrect	117 ms	11180 KB	Output isn't correct
90	Incorrect	103 ms	11388 KB	Output isn't correct
91	Incorrect	101 ms	11392 KB	Output isn't correct
92	Incorrect	120 ms	11376 KB	Output isn't correct