#include <cassert>
#include <cmath>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <functional>
#include <iostream>
#include <limits>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

using namespace std;

using Int = long long;

template <class T1, class T2> ostream &operator<<(ostream &os, const pair<T1, T2> &a) { return os << "(" << a.first << ", " << a.second << ")"; };
template <class T> ostream &operator<<(ostream &os, const vector<T> &as) { const int sz = as.size(); os << "["; for (int i = 0; i < sz; ++i) { if (i >= 256) { os << ", ..."; break; } if (i > 0) { os << ", "; } os << as[i]; } return os << "]"; }
template <class T> void pv(T a, T b) { for (T i = a; i != b; ++i) cerr << *i << " "; cerr << endl; }
template <class T> bool chmin(T &t, const T &f) { if (t > f) { t = f; return true; } return false; }
template <class T> bool chmax(T &t, const T &f) { if (t < f) { t = f; return true; } return false; }
#define COLOR(s) ("\x1b[" s "m")


char buf[1010];

int R, C, K;
vector<string> A, B;

int main() {
  for (; ~scanf("%d%d%d", &R, &C, &K); ) {
    A.resize(R);
    B.resize(R);
    for (int x = 0; x < R; ++x) {
      scanf("%s", buf); A[x] = buf;
      scanf("%s", buf); B[x] = buf;
    }
    
    bool ans = true;
    for (int x = 0; x < R; ++x) {
      int broken = 0;
      int need = 0;
      for (const char a : A[x]) if (a == '-') ++broken;
      for (const char b : B[x]) if (b == '*') ++need;
      if (broken && need) {
        ans = false;
      }
    }
    puts(ans ? "Y" : "N");
  }
  return 0;
}