#include <bits/stdc++.h>
using namespace std;
#define PB push_back
#define f first
#define s second
int dp[300][300][301];
int pred[300][300][301];
int main()
{
int n,m;
cin>>n>>m;
string a[n];
for (int i=0; i<n; i++) cin>>a[i];
reverse(a,a+n);
int pos=0;
for (int j=0; j<m; j++)
if (a[0][j]=='M') pos=j;
for (int i=0; i<n; i++)
for (int j=0; j<m; j++)
for (int c=0; c<300; c++) dp[i][j][c]=-1e9;
dp[0][pos][0]=0;
for (int i=0; i<n-1; i++)
{
for (int j=0; j<m; j++)
if (a[i][j]!='*')
for (int c=0; c<300; c++)
{
for (int c1=-1; c1<=1; c1++)
{
int j1=j+c1;
if (j1>-1 && j1<m)
{
if ((a[i+1][j1]!='(' && a[i+1][j1]!=')') && dp[i+1][j1][c]<dp[i][j][c]) dp[i+1][j1][c]=dp[i][j][c],pred[i+1][j1][c]=-c1;
if (a[i+1][j1]=='(' && dp[i+1][j1][c+1]<dp[i][j][c]+1) dp[i+1][j1][c+1]=dp[i][j][c]+1,pred[i+1][j1][c+1]=-c1;
if (a[i+1][j1]==')' && c>0 && dp[i+1][j1][c-1]<dp[i][j][c]+1) dp[i+1][j1][c-1]=dp[i][j][c]+1,pred[i+1][j1][c-1]=-c1;
}
}
}
}
int mx=0,x=0,y=0;
for (int i=0; i<n; i++)
for (int j=0; j<m; j++)
if (a[i][j]=='*' || i==n-1)
if (dp[i][j][0]>mx) mx=max(mx,dp[i][j][0]),x=i,y=j;
cout<<mx<<endl;
string s;
int bal=0;
while (x>0)
{
int upd=0;
if (a[x][y]=='(' || a[x][y]==')')
{
s+=a[x][y];
if (a[x][y]=='(') upd--;
else upd++;
}
y+=pred[x][y][bal];
bal+=upd;
x--;
}
reverse(s.begin(),s.end());
cout<<s;
}
