Submission #312944

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
312944	2020-10-14T20:00:10 Z	fergonzgut21	Mecho (IOI09_mecho)	C++14	91 / 100	1000 ms	9848 KB

mecho

#include <iostream>
#include <queue>
#define MAX 805
using namespace std;

struct bee
{
    int x;
    int y;
    int t;
    int r;
};

int N, S, sx, sy, ex, ey, B[MAX][MAX], vis[MAX][MAX][2], rilres = -1;
char A[MAX][MAX];
queue <bee> qiu, qiu2;
bee temp;

void solve ()
{
    while (!qiu.empty())
    {
        temp = qiu.front();
        qiu.pop();
        temp.t++;
        if (B[temp.x - 1][temp.y] == -1 && A[temp.x - 1][temp.y] != 'T' && A[temp.x - 1][temp.y] != 'D')
        {
            B[temp.x - 1][temp.y] = temp.t;
            temp.x--;
            qiu.push(temp);
            temp.x++;
        }
        if (B[temp.x + 1][temp.y] == -1 && A[temp.x + 1][temp.y] != 'T' && A[temp.x + 1][temp.y] != 'D')
        {
            B[temp.x + 1][temp.y] = temp.t;
            temp.x++;
            qiu.push(temp);
            temp.x--;
        }
        if (B[temp.x][temp.y - 1] == -1 && A[temp.x][temp.y - 1] != 'T' && A[temp.x][temp.y - 1] != 'D')
        {
            B[temp.x][temp.y - 1] = temp.t;
            temp.y--;
            qiu.push(temp);
            temp.y++;
        }
        if (B[temp.x][temp.y + 1] == -1 && A[temp.x][temp.y + 1] != 'T' && A[temp.x][temp.y + 1] != 'D')
        {
            B[temp.x][temp.y + 1] = temp.t;
            temp.y++;
            qiu.push(temp);
            temp.y--;
        }
    }
}

int solve2(int x, int y, int t, int r)
{
    temp.x = x;
    temp.y = y;
    temp.t = t;
    temp.r = r;
    qiu2.push(temp);
    while (!qiu2.empty())
    {
        temp = qiu2.front();
        qiu2.pop();
        //cout << temp.x << " " << temp.y << " " << temp.t << " " << temp.r << endl;
        if (temp.x == ex && temp.y == ey)
            rilres = max(rilres,temp.r);
        if (temp.r + (temp.t / S) >= B[temp.x][temp.y])
            temp.r -= ((temp.r + (temp.t / S)) - B[temp.x][temp.y] + 1);
        //cout << temp.x << " " << temp.y << " " << temp.t << " " << temp.r << endl;
        if (temp.r < 0 || temp.r < rilres)
            continue;
        temp.t++;
        //cout << vis[temp.x][temp.y][0] << " " << vis[temp.x][temp.y][1] << endl;
        if (vis[temp.x + 1][temp.y][1] <= temp.r && A[temp.x + 1][temp.y] != 'T')
        {
            if ((vis[temp.x + 1][temp.y][1] == temp.r && vis[temp.x + 1][temp.y][0] > temp.t) || vis[temp.x + 1][temp.y][1] < temp.r)
            {
                //cout << "SI" << endl;
                vis[temp.x + 1][temp.y][1] = temp.r;
                vis[temp.x + 1][temp.y][0] = temp.t;
                temp.x++;
                qiu2.push(temp);
                temp.x--;
            }
        }
        if (vis[temp.x - 1][temp.y][1] <= temp.r && A[temp.x - 1][temp.y] != 'T')
        {
            if ((vis[temp.x - 1][temp.y][1] == temp.r && vis[temp.x - 1][temp.y][0] > temp.t) || vis[temp.x - 1][temp.y][1] < temp.r)
            {
                vis[temp.x - 1][temp.y][1] = temp.r;
                vis[temp.x - 1][temp.y][0] = temp.t;
                temp.x--;
                qiu2.push(temp);
                temp.x++;
            }
        }
        if (vis[temp.x][temp.y + 1][1] <= temp.r && A[temp.x][temp.y + 1] != 'T')
        {
            if ((vis[temp.x][temp.y + 1][1] == temp.r && vis[temp.x][temp.y + 1][0] > temp.t) || vis[temp.x][temp.y + 1][1] < temp.r)
            {
                vis[temp.x][temp.y + 1][1] = temp.r;
                vis[temp.x][temp.y + 1][0] = temp.t;
                temp.y++;
                qiu2.push(temp);
                temp.y--;
            }
        }
        if (vis[temp.x][temp.y - 1][1] <= temp.r && A[temp.x][temp.y - 1] != 'T')
        {
            if ((vis[temp.x][temp.y - 1][1] == temp.r && vis[temp.x][temp.y - 1][0] > temp.t) || vis[temp.x][temp.y - 1][1] < temp.r)
            {
                vis[temp.x][temp.y - 1][1] = temp.r;
                vis[temp.x][temp.y - 1][0] = temp.t;
                temp.y--;
                qiu2.push(temp);
                temp.y++;
            }
        }
    }
    return -1;
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> N >> S;
    for (int i = 1; i <= N; i++)
        for (int j = 1; j <= N; j++)
        {
            cin >> A[i][j];
            vis[i][j][1] = -1;
            vis[i][j][0] = 1073741822;
            B[i][j] = -1;
            if (A[i][j] == 'M')
            {
                sx = i;
                sy = j;
            }
            if (A[i][j] == 'D')
            {
                ex = i;
                ey = j;
            }
            if (A[i][j] == 'H')
            {
                temp.x = i;
                temp.y = j;
                temp.t = 0;
                B[i][j] = 0;
                qiu.push(temp);
            }
        }
    solve();
    /*cout << endl;
    for (int i = 1; i <= N; i++)
    {
        for (int j = 1; j <= N; j++)
        {
            cout << B[i][j] << " ";
        }
        cout << endl;
    }*/
    vis[sx][sy][1] = 1073741822;
    vis[sx][sy][0] = 0;
    solve2(sx, sy, 0, B[sx][sy] - 1);
    cout << rilres;
    return 0;
}

Subtask #1

91.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	147 ms	8824 KB	Output is correct
8	Correct	0 ms	512 KB	Output is correct
9	Correct	0 ms	512 KB	Output is correct
10	Correct	1 ms	512 KB	Output is correct
11	Correct	0 ms	512 KB	Output is correct
12	Correct	1 ms	896 KB	Output is correct
13	Correct	1 ms	768 KB	Output is correct
14	Correct	1 ms	896 KB	Output is correct
15	Correct	1 ms	512 KB	Output is correct
16	Correct	1 ms	512 KB	Output is correct
17	Correct	1 ms	512 KB	Output is correct
18	Correct	1 ms	512 KB	Output is correct
19	Correct	1 ms	640 KB	Output is correct
20	Correct	1 ms	640 KB	Output is correct
21	Correct	1 ms	640 KB	Output is correct
22	Correct	1 ms	640 KB	Output is correct
23	Correct	1 ms	768 KB	Output is correct
24	Correct	1 ms	768 KB	Output is correct
25	Correct	1 ms	896 KB	Output is correct
26	Correct	1 ms	896 KB	Output is correct
27	Correct	1 ms	896 KB	Output is correct
28	Correct	1 ms	896 KB	Output is correct
29	Correct	1 ms	896 KB	Output is correct
30	Correct	1 ms	896 KB	Output is correct
31	Correct	1 ms	1024 KB	Output is correct
32	Correct	1 ms	1024 KB	Output is correct
33	Correct	5 ms	3968 KB	Output is correct
34	Correct	5 ms	3968 KB	Output is correct
35	Correct	140 ms	4096 KB	Output is correct
36	Correct	7 ms	4480 KB	Output is correct
37	Correct	6 ms	4480 KB	Output is correct
38	Correct	201 ms	4716 KB	Output is correct
39	Correct	9 ms	4992 KB	Output is correct
40	Correct	8 ms	4992 KB	Output is correct
41	Correct	291 ms	5368 KB	Output is correct
42	Correct	10 ms	5504 KB	Output is correct
43	Correct	9 ms	5504 KB	Output is correct
44	Correct	399 ms	6036 KB	Output is correct
45	Correct	12 ms	6016 KB	Output is correct
46	Correct	10 ms	6016 KB	Output is correct
47	Correct	535 ms	6776 KB	Output is correct
48	Correct	13 ms	6528 KB	Output is correct
49	Correct	12 ms	6528 KB	Output is correct
50	Correct	710 ms	7288 KB	Output is correct
51	Correct	15 ms	7040 KB	Output is correct
52	Correct	14 ms	7040 KB	Output is correct
53	Correct	895 ms	8056 KB	Output is correct
54	Correct	18 ms	7552 KB	Output is correct
55	Correct	15 ms	7552 KB	Output is correct
56	Execution timed out	1093 ms	8568 KB	Time limit exceeded
57	Correct	20 ms	8064 KB	Output is correct
58	Correct	18 ms	8064 KB	Output is correct
59	Execution timed out	1090 ms	9336 KB	Time limit exceeded
60	Correct	22 ms	8576 KB	Output is correct
61	Correct	20 ms	8576 KB	Output is correct
62	Execution timed out	1073 ms	9848 KB	Time limit exceeded
63	Correct	45 ms	8576 KB	Output is correct
64	Correct	49 ms	8696 KB	Output is correct
65	Correct	46 ms	8576 KB	Output is correct
66	Correct	45 ms	8608 KB	Output is correct
67	Correct	40 ms	8576 KB	Output is correct
68	Correct	36 ms	8576 KB	Output is correct
69	Correct	38 ms	8576 KB	Output is correct
70	Correct	35 ms	8576 KB	Output is correct
71	Correct	35 ms	8576 KB	Output is correct
72	Correct	32 ms	8576 KB	Output is correct
73	Correct	34 ms	9088 KB	Output is correct
74	Correct	63 ms	9088 KB	Output is correct
75	Correct	36 ms	9088 KB	Output is correct
76	Correct	35 ms	9088 KB	Output is correct
77	Correct	37 ms	9088 KB	Output is correct
78	Correct	65 ms	9088 KB	Output is correct
79	Correct	268 ms	9200 KB	Output is correct
80	Correct	323 ms	9200 KB	Output is correct
81	Correct	219 ms	9200 KB	Output is correct
82	Correct	106 ms	9088 KB	Output is correct
83	Correct	77 ms	8960 KB	Output is correct
84	Correct	247 ms	8960 KB	Output is correct
85	Correct	179 ms	9084 KB	Output is correct
86	Correct	172 ms	8960 KB	Output is correct
87	Correct	127 ms	8960 KB	Output is correct
88	Correct	220 ms	9048 KB	Output is correct
89	Correct	384 ms	9204 KB	Output is correct
90	Correct	122 ms	8832 KB	Output is correct
91	Correct	358 ms	9204 KB	Output is correct
92	Correct	256 ms	9076 KB	Output is correct