/**Lucky Boy**/
#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i <= (b); ++i)
#define FORD(i, a, b) for (int i = (a); i >= (b); --i)
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define maxc 1000000007
#define maxn 305
#define maxm 500005
#define pii pair <int,int>
#define Task "Retro"
template <typename T> inline void read(T &x){char c;bool nega=0;while((!isdigit(c=getchar()))&&(c!='-'));if(c=='-'){nega=1;c=getchar();}x=c-48;while(isdigit(c=getchar())) x=x*10+c-48;if(nega) x=-x;}
template <typename T> inline void writep(T x){if(x>9) writep(x/10);putchar(x%10+48);}
template <typename T> inline void write(T x){if(x<0){putchar('-');x=-x;}writep(x);putchar(' ');}
template <typename T> inline void writeln(T x){write(x);putchar('\n');}
using namespace std;
int n,m,tr[maxn][maxn][maxn],dp[maxn][maxn][maxn];
char c[maxn][maxn];
vector <char> res;
int main()
{
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
//freopen(Task".inp", "r",stdin);
//freopen(Task".out", "w",stdout);
cin >> n >> m;
FOR(i,1,n)
FOR(j,1,m)
FOR(k,0,n) dp[i][j][k] = -maxc;
FOR(i,1,n)
FOR(j,1,m)
{
cin >> c[i][j];
if (c[i][j] == 'M') dp[i][j][0] = 0;
}
FORD(i,n-1,1)
FOR(j,1,m)
{
if (c[i][j] == '*') continue;
if (c[i][j] == '.')
{
FOR(k,0,n)
{
FOR(dis,-1,1)
{
int x = j + dis;
if (x < 0 || x > m) continue;
if (dp[i][j][k] < dp[i+1][x][k])
{
dp[i][j][k] = dp[i+1][x][k];
tr[i][j][k] = x;
}
}
}
continue;
}
if (c[i][j] == '(')
{
FOR(k,1,n)
{
FOR(dis,-1,1)
{
int x = j + dis;
if (x < 0 || x > m) continue;
if (dp[i][j][k] < dp[i+1][x][k-1] + 1)
{
dp[i][j][k] = dp[i+1][x][k-1] + 1;
tr[i][j][k] = x;
}
}
}
continue;
}
FOR(k,0,n - 1)
{
FOR(dis,-1,1)
{
int x = j + dis;
if (x < 0 || x > m) continue;
if (dp[i][j][k] < dp[i+1][x][k+1] + 1)
{
dp[i][j][k] = dp[i+1][x][k+1] + 1;
tr[i][j][k] = x;
}
}
}
}
int ans = -maxc,u,v;
FOR(i,1,n)
FOR(j,1,n)
if (ans < dp[i][j][0])
{
ans = dp[i][j][0];
u = i,v = j;
}
cout << ans << '\n';
int ww = 0;
while (u <= n)
{
char temp = c[u][v];
v = tr[u][v][ww];
res.pb(temp);
++u;
if (temp == '(') --ww;
else if (temp == ')') ++ww;
}
reverse(res.begin(),res.end());
for (char c : res) if (c == '(' || c == ')')
cout << c;
return 0;
}
