Submission #312946

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
312946	2020-10-14T20:03:21 Z	fergonzgut21	Mecho (IOI09_mecho)	C++17	76 / 100	1000 ms	5368 KB

mecho

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

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

short 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;
}

Compilation message

mecho.cpp: In function 'int main()':
mecho.cpp:136:28: warning: overflow in conversion from 'int' to 'short int' changes value from '1073741822' to '-2' [-Woverflow]
  136 |             vis[i][j][0] = 1073741822;
      |                            ^~~~~~~~~~
mecho.cpp:167:22: warning: overflow in conversion from 'int' to 'short int' changes value from '1073741822' to '-2' [-Woverflow]
  167 |     vis[sx][sy][1] = 1073741822;
      |                      ^~~~~~~~~~

Subtask #1

76.0 / 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	1 ms	384 KB	Output is correct
7	Correct	140 ms	4984 KB	Output is correct
8	Correct	1 ms	384 KB	Output is correct
9	Correct	0 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	1 ms	640 KB	Output is correct
13	Correct	1 ms	640 KB	Output is correct
14	Correct	1 ms	640 KB	Output is correct
15	Correct	0 ms	512 KB	Output is correct
16	Correct	0 ms	512 KB	Output is correct
17	Correct	0 ms	512 KB	Output is correct
18	Correct	0 ms	512 KB	Output is correct
19	Correct	1 ms	512 KB	Output is correct
20	Correct	0 ms	512 KB	Output is correct
21	Correct	1 ms	512 KB	Output is correct
22	Correct	1 ms	512 KB	Output is correct
23	Correct	1 ms	640 KB	Output is correct
24	Correct	1 ms	640 KB	Output is correct
25	Correct	1 ms	640 KB	Output is correct
26	Correct	1 ms	640 KB	Output is correct
27	Correct	1 ms	768 KB	Output is correct
28	Correct	1 ms	768 KB	Output is correct
29	Correct	1 ms	768 KB	Output is correct
30	Correct	1 ms	768 KB	Output is correct
31	Correct	1 ms	768 KB	Output is correct
32	Correct	1 ms	768 KB	Output is correct
33	Incorrect	5 ms	2304 KB	Output isn't correct
34	Correct	4 ms	2304 KB	Output is correct
35	Correct	120 ms	2424 KB	Output is correct
36	Incorrect	6 ms	2560 KB	Output isn't correct
37	Incorrect	5 ms	2560 KB	Output isn't correct
38	Correct	181 ms	2680 KB	Output is correct
39	Incorrect	7 ms	2816 KB	Output isn't correct
40	Incorrect	6 ms	2816 KB	Output isn't correct
41	Correct	255 ms	3068 KB	Output is correct
42	Incorrect	9 ms	3072 KB	Output isn't correct
43	Incorrect	8 ms	3072 KB	Output isn't correct
44	Correct	355 ms	3320 KB	Output is correct
45	Incorrect	11 ms	3328 KB	Output isn't correct
46	Incorrect	9 ms	3328 KB	Output isn't correct
47	Correct	473 ms	3576 KB	Output is correct
48	Incorrect	12 ms	3712 KB	Output isn't correct
49	Incorrect	11 ms	3712 KB	Output isn't correct
50	Correct	613 ms	4088 KB	Output is correct
51	Incorrect	14 ms	3968 KB	Output isn't correct
52	Incorrect	12 ms	3968 KB	Output isn't correct
53	Correct	786 ms	4600 KB	Output is correct
54	Incorrect	16 ms	4224 KB	Output isn't correct
55	Incorrect	14 ms	4224 KB	Output isn't correct
56	Correct	983 ms	4836 KB	Output is correct
57	Incorrect	18 ms	4480 KB	Output isn't correct
58	Incorrect	16 ms	4460 KB	Output isn't correct
59	Execution timed out	1085 ms	5112 KB	Time limit exceeded
60	Incorrect	21 ms	4736 KB	Output isn't correct
61	Incorrect	18 ms	4736 KB	Output isn't correct
62	Execution timed out	1094 ms	5368 KB	Time limit exceeded
63	Correct	42 ms	4736 KB	Output is correct
64	Correct	44 ms	4736 KB	Output is correct
65	Correct	43 ms	4736 KB	Output is correct
66	Correct	42 ms	4736 KB	Output is correct
67	Correct	37 ms	4768 KB	Output is correct
68	Correct	36 ms	4736 KB	Output is correct
69	Correct	35 ms	4736 KB	Output is correct
70	Correct	33 ms	4736 KB	Output is correct
71	Correct	32 ms	4736 KB	Output is correct
72	Correct	30 ms	4736 KB	Output is correct
73	Correct	30 ms	4992 KB	Output is correct
74	Correct	56 ms	4984 KB	Output is correct
75	Correct	31 ms	4992 KB	Output is correct
76	Correct	32 ms	4992 KB	Output is correct
77	Correct	31 ms	4992 KB	Output is correct
78	Correct	59 ms	5120 KB	Output is correct
79	Correct	242 ms	4992 KB	Output is correct
80	Correct	298 ms	5240 KB	Output is correct
81	Correct	200 ms	4992 KB	Output is correct
82	Correct	99 ms	5180 KB	Output is correct
83	Correct	70 ms	4992 KB	Output is correct
84	Correct	222 ms	5112 KB	Output is correct
85	Correct	160 ms	4992 KB	Output is correct
86	Correct	154 ms	4992 KB	Output is correct
87	Correct	115 ms	5088 KB	Output is correct
88	Correct	198 ms	4984 KB	Output is correct
89	Correct	342 ms	4984 KB	Output is correct
90	Correct	119 ms	4984 KB	Output is correct
91	Correct	319 ms	5240 KB	Output is correct
92	Correct	233 ms	5240 KB	Output is correct