#include <bits/stdc++.h>
#define LL long long
#define sl(n) strlen(n)
#define endline puts("")
#define pii pair<int , int>
#define pr_q priority_queue
#define debug puts("DEBUG.")
using namespace std;
const int N = 1e3 + 10;
const int inf = ~0u >> 2;
/*
..+---+
./   /|
+---+ |
|   | +
|   |/.
+---+..
*/
int n,m;
char s[N][N];
char bl[10][10] = {"        ",
                   " ..+---+",
                   " ./   /|",
                   " +---+ |",
                   " |   | +",
                   " |   |/.",
                   " +---+.."};
char cl[10][10] = {"        ",
                   " ..+---+",
                   " ./|   |",
                   " + |   |",
                   " | +---+",
                   " |/   /.",
                   " +---+.."};
// 6 行 7 列
queue<pii> q;
bool check(int x , int y)
{
    if(x <= 0 || y <= 0 || x + 5 > n || y + 6 > m)
        return 0;
    bool fl = 1;
    for(int i = 1;i <= 6;i++)
        for(int j = 1;j <= 7;j++)
            if(bl[i][j] != '.')
                fl &= s[x + i - 1][y + j - 1] == bl[i][j];
    return fl;
}
void clear(int x , int y)
{
    for(int i = 1;i <= 6;i++)
        for(int j = 1;j <= 7;j++)
            if(cl[i][j] != '.')
                s[x + i - 1][y + j - 1] = cl[i][j];
    if( check(x , y - 4) )
        q.push( pii(x , y - 4) );
    if( check(x - 2 , y + 2) )
        q.push( pii(x - 2 , y + 2) );
    if( check(x + 3 , y) )
        q.push( pii(x + 3 , y) );
}
void read(char *s)
{
    int cnt = 0;
    char ch = getchar();
    while(ch == '\n' || ch == '\r')
        ch = getchar();
    while(ch != '\n' && ch != '\r')
        s[cnt++] = ch,ch = getchar();
}
int main()
{
    cin >> n >> m;
    for(int i = 1;i <= n;i++)
        read(s[i] + 1);
    for(int i = 1;i <= n;i++)
        for(int j = 1;j <= m;j++)
        {
            if( check(i , j) )
                q.push( pii(i , j) );
        }
    int ans = 0;
    while(!q.empty() )
    {
        pii v = q.front();
        // cout << v.first << " " << v.second << endl;
        q.pop();
        clear(v.first , v.second);
        ++ans;
    }
    cout << ans << endl;
    return 0;
}
/*
14 17
....+---+---+....
.../ / /|....
..+---+---+ |....
./ /| | +---+
+---+ | |/ /|
| | +---+---+ |
| |/ /| | +
+---+---+ | |/|
| | | +---+ |
| | |/ /| +
+---+---+---+ |/.
| | | | +..
| | | |/...
+---+---+---+....
*/