#include
using namespace std;
int main()
{
int n, m, k, S;
cin >> n;
cin >> m;
cin >> k;
cin >> S;
char a[n][m];
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
cin >> a[i][j];
}
}
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
if(a[i][j] == '.'){
S = S - 3;
}
else if(a[i][j] == '*'){
S = S + 4;
}
else if(a[i][j] == '#'){
break;
}
if(j == m-1){
S = S+1;
}
}
}
if(S >= k){
cout << "Yes" << endl << S;
}
else{
cout << "No" << endl;
}
return 0;
}