Submission #312969

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
312969	2020-10-14T20:32:45 Z	fergonzgut21	Mecho (IOI09_mecho)	C++14	94 / 100	1000 ms	9260 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.t > N * N / 2)
        {
            return 0;
        }
        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')
        {
                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')
        {
                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')
        {
                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')
        {
                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	1 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	1 ms	384 KB	Output is correct
5	Correct	0 ms	384 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	46 ms	8720 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	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	0 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	100 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	149 ms	4728 KB	Output is correct
39	Correct	8 ms	4992 KB	Output is correct
40	Correct	8 ms	4992 KB	Output is correct
41	Correct	215 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	292 ms	5752 KB	Output is correct
45	Correct	12 ms	6016 KB	Output is correct
46	Correct	10 ms	6016 KB	Output is correct
47	Correct	390 ms	6392 KB	Output is correct
48	Correct	13 ms	6528 KB	Output is correct
49	Correct	12 ms	6528 KB	Output is correct
50	Correct	511 ms	7160 KB	Output is correct
51	Correct	16 ms	7040 KB	Output is correct
52	Correct	14 ms	7040 KB	Output is correct
53	Correct	655 ms	7692 KB	Output is correct
54	Correct	18 ms	7552 KB	Output is correct
55	Correct	16 ms	7552 KB	Output is correct
56	Correct	827 ms	8312 KB	Output is correct
57	Correct	20 ms	8064 KB	Output is correct
58	Correct	18 ms	7936 KB	Output is correct
59	Execution timed out	1027 ms	8764 KB	Time limit exceeded
60	Correct	23 ms	8576 KB	Output is correct
61	Correct	20 ms	8448 KB	Output is correct
62	Execution timed out	1052 ms	9260 KB	Time limit exceeded
63	Correct	45 ms	8568 KB	Output is correct
64	Correct	47 ms	8564 KB	Output is correct
65	Correct	46 ms	8576 KB	Output is correct
66	Correct	46 ms	8564 KB	Output is correct
67	Correct	40 ms	8568 KB	Output is correct
68	Correct	36 ms	8576 KB	Output is correct
69	Correct	37 ms	8576 KB	Output is correct
70	Correct	36 ms	8576 KB	Output is correct
71	Correct	35 ms	8576 KB	Output is correct
72	Correct	33 ms	8576 KB	Output is correct
73	Correct	47 ms	8952 KB	Output is correct
74	Correct	52 ms	8960 KB	Output is correct
75	Correct	36 ms	8960 KB	Output is correct
76	Correct	38 ms	8960 KB	Output is correct
77	Correct	37 ms	8960 KB	Output is correct
78	Correct	38 ms	8932 KB	Output is correct
79	Correct	195 ms	8952 KB	Output is correct
80	Correct	48 ms	8824 KB	Output is correct
81	Correct	42 ms	8832 KB	Output is correct
82	Correct	67 ms	8952 KB	Output is correct
83	Correct	40 ms	8832 KB	Output is correct
84	Correct	70 ms	8832 KB	Output is correct
85	Correct	113 ms	8832 KB	Output is correct
86	Correct	142 ms	8832 KB	Output is correct
87	Correct	51 ms	8840 KB	Output is correct
88	Correct	89 ms	8704 KB	Output is correct
89	Correct	268 ms	8824 KB	Output is correct
90	Correct	42 ms	8704 KB	Output is correct
91	Correct	57 ms	8800 KB	Output is correct
92	Correct	43 ms	8704 KB	Output is correct