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Submission #286378

# Submission time Handle Problem Language Result Execution time Memory
286378 2020-08-30T10:47:55 Z Alexa2001 Sandwich (JOI16_sandwich) C++17
100 / 100
 4899 ms 11192 KB 
#include <bits/stdc++.h>

using namespace std;

const int inf = 1e9;
const int Nmax = 404;

int cells, n, m;
bool bad;

char a[Nmax][Nmax];
int ans[Nmax][Nmax];
int Upper[Nmax][Nmax], Lower[Nmax][Nmax];

void add_upper(int x, int y);


void add_lower(int x, int y)
{
    if(Lower[x][y] == 1) bad = 1;
    if(Lower[x][y] || bad) return;
    Lower[x][y] = 1;

    ++cells;

    if(a[x][y] == 'N') /// adaug dreapta
    {
        if(a[x][y+1] == 'N')
            add_lower(x, y+1);
        else if(a[x][y+1] == 'Z')
            add_upper(x, y+1);

        if(x - 1 >= 1)
            add_lower(x-1, y);
    }
    else
    {
        if(a[x][y-1] == 'N')
            add_upper(x, y-1);
        else if(a[x][y-1] == 'Z')
            add_lower(x, y-1);

        if(x - 1 >= 1)
            add_lower(x-1, y);
    }

    Lower[x][y] = -1;
}

void add_upper(int x, int y)
{
    if(Upper[x][y] == 1) bad = 1;

    if(Upper[x][y] || bad) return;
    Upper[x][y] = 1;

    ++cells;

    if(a[x][y] == 'N') /// adaug dreapta
    {
        if(a[x][y-1] == 'N')
            add_upper(x, y-1);
        else if(a[x][y-1] == 'Z')
            add_lower(x, y-1);

        if(x + 1 <= n)
            add_upper(x+1, y);
    }
    else
    {
        if(a[x][y+1] == 'N')
            add_lower(x, y+1);
        else if(a[x][y+1] == 'Z')
            add_upper(x, y+1);

        if(x + 1 <= n)
            add_upper(x+1, y);
    }

    Upper[x][y] = -1;
}

void solve1(int c)
{
    int i, j;
    for(i=1; i<=n; ++i)
        for(j=1; j<=m; ++j)
            Lower[i][j] = Upper[i][j] = 0;

    cells = 0;
    bad = 0;

    for(i=1; i<=n; ++i)
    {
        add_lower(i, c);
        if(bad) return;
        ans[i][c] = min(ans[i][c], cells);
    }
}


void solve2(int c)
{
    int i, j;
    for(i=1; i<=n; ++i)
        for(j=1; j<=m; ++j)
            Lower[i][j] = Upper[i][j] = 0;

    cells = 0;
    bad = 0;

    for(i=n; i; --i)
    {
        add_upper(i, c);
        if(bad) return;
        ans[i][c] = min(ans[i][c], cells);
    }
}


int main()
{
   // freopen("input", "r", stdin);
    cin.tie(0); cin.sync_with_stdio(false);

    cin >> n >> m;

    int i, j;
    for(i=1; i<=n; ++i) cin >> (a[i] + 1);

    for(i=1; i<=n; ++i)
        for(j=1; j<=m; ++j)
            ans[i][j] = inf;

    for(i=1; i<=m; ++i)
        solve1(i);

    for(i=1; i<=m; ++i)
        solve2(i);

    for(i=1; i<=n; ++i)
        for(j=1; j<=m; ++j)
            cout << (ans[i][j] == inf ? -1 : 2 * ans[i][j]) << " \n"[j==m];

    return 0;
}

Subtask #1
35.0 / 35.0

# 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 640 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 640 KB Output is correct
6 Correct 1 ms 640 KB Output is correct
7 Correct 5 ms 640 KB Output is correct
8 Correct 5 ms 640 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 5 ms 640 KB Output is correct
11 Correct 10 ms 640 KB Output is correct
12 Correct 6 ms 512 KB Output is correct
13 Correct 8 ms 640 KB Output is correct
14 Correct 9 ms 640 KB Output is correct
15 Correct 3 ms 640 KB Output is correct
16 Correct 4 ms 640 KB Output is correct
17 Correct 4 ms 640 KB Output is correct
18 Correct 4 ms 640 KB Output is correct
19 Correct 5 ms 660 KB Output is correct
20 Correct 3 ms 640 KB Output is correct
21 Correct 3 ms 640 KB Output is correct
22 Correct 2 ms 640 KB Output is correct
23 Correct 2 ms 640 KB Output is correct
24 Correct 8 ms 640 KB Output is correct
25 Correct 8 ms 640 KB Output is correct
26 Correct 6 ms 640 KB Output is correct
27 Correct 4 ms 640 KB Output is correct
28 Correct 6 ms 768 KB Output is correct

Subtask #2
65.0 / 65.0

# 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 640 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 640 KB Output is correct
6 Correct 1 ms 640 KB Output is correct
7 Correct 5 ms 640 KB Output is correct
8 Correct 5 ms 640 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 5 ms 640 KB Output is correct
11 Correct 10 ms 640 KB Output is correct
12 Correct 6 ms 512 KB Output is correct
13 Correct 8 ms 640 KB Output is correct
14 Correct 9 ms 640 KB Output is correct
15 Correct 3 ms 640 KB Output is correct
16 Correct 4 ms 640 KB Output is correct
17 Correct 4 ms 640 KB Output is correct
18 Correct 4 ms 640 KB Output is correct
19 Correct 5 ms 660 KB Output is correct
20 Correct 3 ms 640 KB Output is correct
21 Correct 3 ms 640 KB Output is correct
22 Correct 2 ms 640 KB Output is correct
23 Correct 2 ms 640 KB Output is correct
24 Correct 8 ms 640 KB Output is correct
25 Correct 8 ms 640 KB Output is correct
26 Correct 6 ms 640 KB Output is correct
27 Correct 4 ms 640 KB Output is correct
28 Correct 6 ms 768 KB Output is correct
29 Correct 3 ms 384 KB Output is correct
30 Correct 2 ms 2432 KB Output is correct
31 Correct 188 ms 3064 KB Output is correct
32 Correct 184 ms 3192 KB Output is correct
33 Correct 19 ms 2304 KB Output is correct
34 Correct 939 ms 3576 KB Output is correct
35 Correct 1093 ms 3064 KB Output is correct
36 Correct 3 ms 2432 KB Output is correct
37 Correct 1369 ms 3548 KB Output is correct
38 Correct 1649 ms 3448 KB Output is correct
39 Correct 1361 ms 3576 KB Output is correct
40 Correct 4899 ms 3752 KB Output is correct
41 Correct 2939 ms 2552 KB Output is correct
42 Correct 3776 ms 5624 KB Output is correct
43 Correct 3715 ms 5628 KB Output is correct
44 Correct 3789 ms 5240 KB Output is correct
45 Correct 867 ms 3576 KB Output is correct
46 Correct 1543 ms 3524 KB Output is correct
47 Correct 1319 ms 3576 KB Output is correct
48 Correct 927 ms 3192 KB Output is correct
49 Correct 1431 ms 3576 KB Output is correct
50 Correct 1400 ms 3576 KB Output is correct
51 Correct 1447 ms 3576 KB Output is correct
52 Correct 653 ms 3524 KB Output is correct
53 Correct 662 ms 3528 KB Output is correct
54 Correct 620 ms 3576 KB Output is correct
55 Correct 664 ms 3576 KB Output is correct
56 Correct 667 ms 3448 KB Output is correct
57 Correct 451 ms 3320 KB Output is correct
58 Correct 3923 ms 4600 KB Output is correct
59 Correct 3901 ms 4628 KB Output is correct
60 Correct 2606 ms 3856 KB Output is correct
61 Correct 2710 ms 7416 KB Output is correct
62 Correct 1571 ms 3704 KB Output is correct
63 Correct 2753 ms 11192 KB Output is correct