#include<iostream>
#include<fstream>
#include<random>
#include<time.h>

using namespace std;

const int MAXN = 1005;

long long n, m, A, B;
long long values[MAXN][MAXN];
string a[MAXN], aCopy[MAXN];

string answer[MAXN];

long long current = 0;
long long maxResult = 0, bestStart = 0;

int startTime;

/*
0 -. down
1 -. up
2 -. left
3 -. right
*/

int lastI, lastJ, lastD;
void simulate(int i, int j, int d)
{
    //cout << i << " " << j << " --> " << current << '\n';

    if(i<0 || j<0 || i>=n || j>=m) return;
    current += values[i][j];

    lastI = i;
    lastJ = j;
    lastD = d;

    if(a[i][j]=='/')
    {
        if(d==0) d = 2;
        else if(d==1) d = 3;
        else if(d==2) d = 0;
        else if(d==3) d = 1;
    }
    else if(a[i][j]=='\\')
    {
        if(d==0) d = 3;
        else if(d==1) d = 2;
        else if(d==2) d = 1;
        else if(d==3) d = 0;
    }

    if(d==0) simulate(i+1, j, d);
    else if(d==1) simulate(i-1, j, d);
    else if(d==2) simulate(i, j-1, d);
    else if(d==3) simulate(i, j+1, d);
}

int convert(char a, char b)
{
    if(a==b) return 0;
    if(a!='.') return B;
    return A;
}

void bruteForce(int startRow, int penalty, int last)
{
    if(clock()>4955 || clock()-startTime>200) return;
    //cout << startRow << " ----- " << penalty << '\n';

    int t;
    int li, lj;

    current = penalty;
    simulate(startRow, 0, 3);

    t = current;
    li = lastI;lj = lastJ;

    if(current<=last) return;
    if(current>maxResult)
    {
        maxResult = current;
        bestStart = startRow;

        for(int i = 0;i<n;i++)
            answer[i] = a[i];
    }

    char save;
    save = a[lastI][lastJ];

    if(a[li][lj]!='/')
    {
        a[li][lj] = '/';
        bruteForce(startRow, penalty-convert(save, '/'), t);
    }

    if(a[li][lj]!='\\')
    {
        a[li][lj] = '\\';
        bruteForce(startRow, penalty-convert(save, '\\'), t);
    }

    a[li][lj] = save;
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    ifstream cin("pinball.in");
    ofstream cout("pinball.out");

    int chance;

    cin >> n >> m;
    cin >> A >> B;
    for(int i = 0;i<n;i++)
    {
        cin >> a[i];

        aCopy[i] = a[i];
        answer[i] = a[i];
    }
    for(int i = 0;i<n;i++)
        for(int j = 0;j<m;j++)
            cin >> values[i][j];

    for(int i = 0;i<n;i++)
    {
        srand(i);
        chance = rand()%100;

        if( (n*m*n*4<1e9) || (n*m*4<(1e9 + 8*1e8) && chance<=75) || ( n*m*4<(2*1e9) && chance<=50) || ( n*m*4<(1e8) && chance<=10) )
        {
            simulate(i, 0, 3);
            if(current>maxResult)
            {
                maxResult = current;
                bestStart = i;
            }
        }
    }

    for(int row = 0;row<n;row++)
    {
        srand(row);
        chance = rand()%100;

        if(clock()>4800) break;

        if( (n*m*n*4<1e9) || (n*m*4<(1e9 + 8*1e8) && chance<=75) || ( n*m*4<(2*1e9) && chance<=50) || ( n*m*4<(1e8) && chance<=10) )
        {
            for(int i = 0;i<n;i++)
                a[i] = aCopy[i];

            startTime = clock();
            bruteForce(row, 0, -1e9);
        }
    }

    cout << bestStart + 1 << '\n';
    for(int i = 0;i<n;i++)
        cout << answer[i] << '\n';
}