Submission #886614

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
886614	2023-12-12T12:26:41 Z	gnu	Mecho (IOI09_mecho)	C++14	18 / 100	104 ms	22656 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, 0   ));
    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]] == 'T') 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);
 /*#ifndef ONLINE_JUDGE
     freopen("input.txt", "r", stdin);
     freopen("output.txt", "w", stdout);
 #endif*/
    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	344 KB	Execution killed with signal 11
2	Runtime error	1 ms	348 KB	Execution killed with signal 11
3	Runtime error	1 ms	348 KB	Execution killed with signal 11
4	Runtime error	1 ms	348 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	103 ms	11328 KB	Output isn't correct
8	Runtime error	1 ms	604 KB	Execution killed with signal 11
9	Runtime error	1 ms	604 KB	Execution killed with signal 11
10	Runtime error	1 ms	600 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	600 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	0 ms	348 KB	Output is correct
21	Runtime error	1 ms	604 KB	Execution killed with signal 11
22	Correct	1 ms	600 KB	Output is correct
23	Runtime error	1 ms	604 KB	Execution killed with signal 11
24	Correct	1 ms	348 KB	Output is correct
25	Runtime error	1 ms	604 KB	Execution killed with signal 11
26	Correct	1 ms	416 KB	Output is correct
27	Runtime error	1 ms	604 KB	Execution killed with signal 11
28	Correct	0 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	2552 KB	Output is correct
35	Runtime error	5 ms	4700 KB	Execution killed with signal 11
36	Runtime error	5 ms	6120 KB	Execution killed with signal 11
37	Correct	8 ms	3164 KB	Output is correct
38	Runtime error	6 ms	5980 KB	Execution killed with signal 11
39	Runtime error	6 ms	7516 KB	Execution killed with signal 11
40	Correct	10 ms	3972 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	10 ms	4724 KB	Output is correct
44	Runtime error	9 ms	9052 KB	Execution killed with signal 11
45	Runtime error	9 ms	10948 KB	Execution killed with signal 11
46	Correct	13 ms	5592 KB	Output is correct
47	Runtime error	13 ms	10852 KB	Execution killed with signal 11
48	Runtime error	11 ms	12892 KB	Execution killed with signal 11
49	Correct	17 ms	6612 KB	Output is correct
50	Runtime error	13 ms	12892 KB	Execution killed with signal 11
51	Runtime error	13 ms	15028 KB	Execution killed with signal 11
52	Correct	23 ms	7516 KB	Output is correct
53	Runtime error	15 ms	14940 KB	Execution killed with signal 11
54	Runtime error	15 ms	17244 KB	Execution killed with signal 11
55	Correct	26 ms	8804 KB	Output is correct
56	Runtime error	17 ms	17312 KB	Execution killed with signal 11
57	Runtime error	17 ms	19788 KB	Execution killed with signal 11
58	Correct	24 ms	9980 KB	Output is correct
59	Runtime error	20 ms	20056 KB	Execution killed with signal 11
60	Runtime error	21 ms	22548 KB	Execution killed with signal 11
61	Correct	27 ms	11324 KB	Output is correct
62	Runtime error	23 ms	22352 KB	Execution killed with signal 11
63	Runtime error	31 ms	22360 KB	Execution killed with signal 11
64	Runtime error	33 ms	22364 KB	Execution killed with signal 11
65	Runtime error	32 ms	22364 KB	Execution killed with signal 11
66	Runtime error	30 ms	22356 KB	Execution killed with signal 11
67	Runtime error	30 ms	22352 KB	Execution killed with signal 11
68	Runtime error	33 ms	22356 KB	Execution killed with signal 11
69	Runtime error	32 ms	22424 KB	Execution killed with signal 11
70	Runtime error	32 ms	22376 KB	Execution killed with signal 11
71	Runtime error	34 ms	22612 KB	Execution killed with signal 11
72	Runtime error	32 ms	22444 KB	Execution killed with signal 11
73	Runtime error	28 ms	22656 KB	Execution killed with signal 11
74	Runtime error	29 ms	22512 KB	Execution killed with signal 11
75	Runtime error	29 ms	22620 KB	Execution killed with signal 11
76	Runtime error	28 ms	22652 KB	Execution killed with signal 11
77	Runtime error	28 ms	22608 KB	Execution killed with signal 11
78	Correct	87 ms	11384 KB	Output is correct
79	Incorrect	74 ms	11348 KB	Output isn't correct
80	Incorrect	76 ms	11368 KB	Output isn't correct
81	Incorrect	86 ms	11316 KB	Output isn't correct
82	Incorrect	77 ms	11396 KB	Output isn't correct
83	Incorrect	96 ms	11392 KB	Output isn't correct
84	Incorrect	92 ms	11408 KB	Output isn't correct
85	Incorrect	90 ms	11336 KB	Output isn't correct
86	Incorrect	97 ms	11388 KB	Output isn't correct
87	Incorrect	97 ms	11324 KB	Output isn't correct
88	Incorrect	102 ms	11408 KB	Output isn't correct
89	Incorrect	97 ms	11412 KB	Output isn't correct
90	Incorrect	104 ms	11356 KB	Output isn't correct
91	Incorrect	98 ms	11400 KB	Output isn't correct
92	Incorrect	100 ms	11368 KB	Output isn't correct