Submission #312963

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
312963	2020-10-14T20:24:56 Z	fergonzgut21	Mecho (IOI09_mecho)	C++14	94 / 100	1000 ms	9464 KB

mecho

#include <iostream>
#include <queue>
#define MAX 802
using namespace std;

struct bee
{
    short int x;
    short 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;
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;
    qiu.push(temp);
    while (!qiu.empty())
    {
        temp = qiu.front();
        qiu.pop();
        if (temp.x == ex && temp.y == ey)
            rilres = max(rilres,temp.r);
        if (vis[temp.x][temp.y][1] != temp.r && (temp.x != sx || temp.y != sy))
            continue;
        if (vis[temp.x][temp.y][0] != temp.t && (temp.x != sx || temp.y != sy))
            continue;
        if (temp.r + (temp.t / S) >= B[temp.x][temp.y])
            temp.r -= ((temp.r + (temp.t / S)) - B[temp.x][temp.y] + 1);
        if (temp.r < 0 || temp.r <= rilres)
            continue;
        temp.t++;
        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++;
                qiu.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--;
                qiu.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++;
                qiu.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--;
                qiu.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] = 32700;
            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();
    vis[sx][sy][1] = 32700;
    vis[sx][sy][0] = 0;
    solve2(sx, sy, 0, B[sx][sy] - 1);
    cout << rilres;
    return 0;
}

Subtask #1

94.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	384 KB	Output is correct
2	Correct	0 ms	384 KB	Output is correct
3	Correct	1 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	44 ms	8704 KB	Output is correct
8	Correct	1 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	1 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	6 ms	3968 KB	Output is correct
34	Correct	5 ms	3968 KB	Output is correct
35	Correct	99 ms	4088 KB	Output is correct
36	Correct	7 ms	4480 KB	Output is correct
37	Correct	6 ms	4480 KB	Output is correct
38	Correct	148 ms	4600 KB	Output is correct
39	Correct	8 ms	4992 KB	Output is correct
40	Correct	8 ms	4992 KB	Output is correct
41	Correct	211 ms	5188 KB	Output is correct
42	Correct	10 ms	5504 KB	Output is correct
43	Correct	9 ms	5504 KB	Output is correct
44	Correct	293 ms	5884 KB	Output is correct
45	Correct	12 ms	6016 KB	Output is correct
46	Correct	11 ms	6016 KB	Output is correct
47	Correct	387 ms	6392 KB	Output is correct
48	Correct	14 ms	6528 KB	Output is correct
49	Correct	12 ms	6528 KB	Output is correct
50	Correct	508 ms	6904 KB	Output is correct
51	Correct	16 ms	7040 KB	Output is correct
52	Correct	14 ms	7040 KB	Output is correct
53	Correct	657 ms	7544 KB	Output is correct
54	Correct	18 ms	7544 KB	Output is correct
55	Correct	16 ms	7552 KB	Output is correct
56	Correct	827 ms	8184 KB	Output is correct
57	Correct	20 ms	7936 KB	Output is correct
58	Correct	21 ms	7936 KB	Output is correct
59	Execution timed out	1043 ms	8824 KB	Time limit exceeded
60	Correct	22 ms	8448 KB	Output is correct
61	Correct	20 ms	8448 KB	Output is correct
62	Execution timed out	1088 ms	9464 KB	Time limit exceeded
63	Correct	45 ms	8576 KB	Output is correct
64	Correct	47 ms	8568 KB	Output is correct
65	Correct	47 ms	8572 KB	Output is correct
66	Correct	44 ms	8568 KB	Output is correct
67	Correct	40 ms	8600 KB	Output is correct
68	Correct	37 ms	8704 KB	Output is correct
69	Correct	37 ms	8576 KB	Output is correct
70	Correct	36 ms	8704 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	8960 KB	Output is correct
74	Correct	52 ms	8972 KB	Output is correct
75	Correct	35 ms	8960 KB	Output is correct
76	Correct	37 ms	8952 KB	Output is correct
77	Correct	36 ms	9080 KB	Output is correct
78	Correct	38 ms	8832 KB	Output is correct
79	Correct	194 ms	8952 KB	Output is correct
80	Correct	48 ms	8832 KB	Output is correct
81	Correct	39 ms	8832 KB	Output is correct
82	Correct	65 ms	8832 KB	Output is correct
83	Correct	39 ms	8832 KB	Output is correct
84	Correct	69 ms	8832 KB	Output is correct
85	Correct	114 ms	8832 KB	Output is correct
86	Correct	144 ms	8832 KB	Output is correct
87	Correct	51 ms	8960 KB	Output is correct
88	Correct	88 ms	8704 KB	Output is correct
89	Correct	262 ms	8828 KB	Output is correct
90	Correct	42 ms	8704 KB	Output is correct
91	Correct	58 ms	8704 KB	Output is correct
92	Correct	42 ms	8704 KB	Output is correct