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#include <bits/stdc++.h>
#define MP make_pair
#define PB push_back
#define int long long
#define st first
#define nd second
#define rd third
#define FOR(i, a, b) for(int i =(a); i <=(b); ++i)
#define RE(i, n) FOR(i, 1, n)
#define FORD(i, a, b) for(int i = (a); i >= (b); --i)
#define REP(i, n) for(int i = 0;i <(n); ++i)
#define VAR(v, i) __typeof(i) v=(i)
#define FORE(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) ((int)(x).size())
#define __builtin_ctz __builtin_ctzll
#define __builtin_clz __builtin_clzll
#define __builtin_popcount __builtin_popcountll
using namespace std;
template<typename TH> void _dbg(const char* sdbg, TH h) { cerr<<sdbg<<"="<<h<<"\n"; }
template<typename TH, typename... TA> void _dbg(const char* sdbg, TH h, TA... t) {
  while(*sdbg != ',') { cerr<<*sdbg++; } cerr<<"="<<h<<","; _dbg(sdbg+1, t...);
}
#ifdef LOCAL
#define debug(...) _dbg(#__VA_ARGS__, __VA_ARGS__)
#define debugv(x) {{cerr <<#x <<" = "; FORE(itt, (x)) cerr <<*itt <<", "; cerr <<"\n"; }}
#else
#define debug(...) (__VA_ARGS__)
#define debugv(x)
#define cerr if(0)cout
#endif
#define next ____next
#define prev ____prev
#define left ____left
#define hash ____hash
typedef long long ll;
typedef long double LD;
typedef pair<int, int> PII;
typedef pair<ll, ll> PLL;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<ll> VLL;
typedef vector<pair<int, int> > VPII;
typedef vector<pair<ll, ll> > VPLL;

template<class C> void mini(C&a4, C b4){a4=min(a4, b4); }
template<class C> void maxi(C&a4, C b4){a4=max(a4, b4); }
template<class T1, class T2>
ostream& operator<< (ostream &out, pair<T1, T2> pair) { return out << "(" << pair.first << ", " << pair.second << ")";}
template<class A, class B, class C> struct Triple { A first; B second; C third;
  bool operator<(const Triple& t) const { if (st != t.st) return st < t.st; if (nd != t.nd) return nd < t.nd; return rd < t.rd; } };
template<class T> void ResizeVec(T&, vector<int>) {}
template<class T> void ResizeVec(vector<T>& vec, vector<int> sz) {
  vec.resize(sz[0]); sz.erase(sz.begin()); if (sz.empty()) { return; }
  for (T& v : vec) { ResizeVec(v, sz); }
}
typedef Triple<int, int, int> TIII;
template<class A, class B, class C>
ostream& operator<< (ostream &out, Triple<A, B, C> t) { return out << "(" << t.st << ", " << t.nd << ", " << t.rd << ")"; }
template<class T> ostream& operator<<(ostream& out, vector<T> vec) { out<<"("; for (auto& v: vec) out<<v<<", "; return out<<")"; }
template<class T> ostream& operator<<(ostream& out, set<T> vec) { out<<"("; for (auto& v: vec) out<<v<<", "; return out<<")"; }
template<class L, class R> ostream& operator<<(ostream& out, map<L, R> vec) { out<<"("; for (auto& v: vec) out<<v<<", "; return out<<")"; }

const int N = 3e5 + 6;
const int kInf = 1e18;
char road[4][N];
int dp[N];
int32_t main() {

  ios_base::sync_with_stdio(0);
  cout << fixed << setprecision(15);
  cerr << fixed << setprecision(10);
  cin.tie(0);
  //double beg_clock = 1.0 * clock() / CLOCKS_PER_SEC;
    
  int L, v0, v1, v2, v3;
  cin>>L>>v0>>v1>>v2>>v3;
  VI last(4);
  VI last_free1(L + 2);
  VVI fir_taken(4, VI(L + 3));
  RE (t, 3) {
    road[t][0] = '.';
    RE (i, L) {
      cin>>road[t][i];
      if (t == 3 && i == 1) { road[3][1] = '.'; }
      if (road[t][i] == '#') {
        last[t] = i;
      }
      if (t == 1) {
        if (road[t][i] == '.') {
          last_free1[i] = i;
        } else {
          last_free1[i] = last_free1[i - 1];
        }
      }
    }
  }
  RE (t, 3) {
    fir_taken[t][L + 2] = kInf;
    FORD (i, L + 1, 1) {
      if (road[t][i] == '#') {
        fir_taken[t][i] = i;
      } else {
        fir_taken[t][i] = fir_taken[t][i + 1];
      }
    }
  }
  int M = (v0 - v2) * (v1 - v2) * (v0 - v1) * (v0 - v3) * (v2 - v3); // skalujemy droge przez M
  RE (i, L + 1) {
    dp[i] = 1e18;
  }
  
  VPII stos;
  vector<VPII> ops(L + 2);
  stos.PB({kInf, last[3] + 1});
  int prv = last[3];
  for (int j = last[3] - 1; j >= 1; j--) {
    if (road[3][j] == '#') {
      int przerwa = prv - j - 1;
      //debug(przerwa);
      if (przerwa >= 2) {
        while (stos.back().st <= przerwa) {
          ops[j].PB(stos.back());
          stos.pop_back();
        }
        ops[j].PB({-1, -1});
        stos.PB({przerwa, j + 1});
      }
      prv = j;
    }
  }
  //debug(stos);
  
  set<PII> active_przerwy(ALL(stos));
  int finger = 0;
  //debug(active_przerwy);
  dp[1] = 0;
  for (int i = 1; i <= last[2]; ) {
    int j = i + 1;
    while (road[2][j] == '#') {
      j++;
    }
    if (j == i + 1) {
      dp[j] = dp[i] + M / (v0 - v2);
      //debug(j, dp[j] * 1. / M);
      i = j;
      continue;
    }
    int p, l, r;
#ifndef WYWALDOL
    // jade dolem
    int t = (j - i) * M / (v0 - v2);
    int need_space = t * (v0 - v3) + M;
    p = i * M + dp[i] * (v2 - v3);
    l = p / M;
    r = (p + M - 1) / M;
    //debug(l, r);
    mini(l, L + 1);
    mini(r, L + 1);
    if (road[3][r] == '.' && road[3][l] == '.') {
      int g = fir_taken[3][r];
      if (g == kInf || g * M - p >= need_space) {
        dp[j] = dp[i] + t;
      }
      r = min(g, L + 1);
    }
    int need_free_cells = (need_space + M - 1) / M;
    //debug(need_free_cells);
    while (finger <= l - 1) {
      auto& v = ops[finger];
      while (SZ(v)) {
        if (v.back().st == -1) {
          active_przerwy.erase(active_przerwy.begin());
        } else {
          active_przerwy.insert(v.back());
        }
        v.pop_back();
      }
      finger++;
    }
    //debug(active_przerwy);
    {
    int a = active_przerwy.lower_bound({need_free_cells, -1})->nd;
    //debug("waiting for", a, "to come to ", i);
    //debug(dp[i], (a - i) * M / (v2 - v3));
    //debug(
    mini(dp[j], max(dp[i], (a - i) * M / (v2 - v3)) + t);
    }
#endif
    
#ifndef WYWALGORA
    // jade gora
    p = max(0ll, i * M - dp[i] * (v1 - v2));
    l = p / M;
    r = (p + M - 1) / M;
    if (road[1][r] == '#' || road[1][l] == '#') {
      // musze poczekac az sie zrobi miejsce na gorze
      int a = last_free1[l];
      mini(dp[j], (j - a) * M / (v1 - v2));
    } else {
      // moge od razu przejechac na gore
      int a = min(fir_taken[1][r] - 1, j);
      int na_ogonie = (j - a) * M / (v1 - v2);
      int prosto = dp[i] + (j - i) * M / (v0 - v2);
      mini(dp[j], max(prosto, na_ogonie));
    }
#endif
    //debug(j, dp[j] * 1. / M);
    i = j;
  }
  //debug(last[2], dp[last[2] + 1]);
  int my_back = (last[2] + 1) * M;
#ifndef WYWALGORA
  int wh_front_last_1 = (last[1] + 1) * M + dp[last[2] + 1] * (v1 - v2);
  assert((wh_front_last_1 - my_back) % (v0 - v1) == 0);
  int t1 = dp[last[2] + 1] + max(0ll, wh_front_last_1 - my_back) / (v0 - v1);
#else
  int t1 = 0;
#endif
#ifndef WYWALDOL
  int wh_front_last_3 = (last[3] + 1) * M + dp[last[2] + 1] * (v3 - v2);
  assert((wh_front_last_3 - my_back) % (v0 - v3) == 0);
  //debug(dp[last[2] + 1] + max(0ll, wh_front_last_3 - my_back) * 1. / (v0 - v3) / M);
  int t2 = dp[last[2] + 1] + max(0ll, wh_front_last_3 - my_back) / (v0 - v3);
#else
  int t2 = 0;
#endif
  cout<<max(t1, t2) * (LD)1. / M<<endl;
  
  return 0;
}