#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include //#include //#include //#include //#include //#include //#include //#include //#include //#include //#if __cplusplus >= 201103L //#include //#include //#include //#include // //#define cauto const auto& //#else //#endif using namespace std; typedef long long ll; typedef pair pii; typedef pair pll; typedef vector vint; typedef vector > vvint; typedef vector vll, vLL; typedef vector > vvll, vvLL; #define VV(T) vector > template void initvv(vector > &v, int a, int b, const T &t = T()){ v.assign(a, vector(b, t)); } template void convert(const F &f, T &t){ stringstream ss; ss << f; ss >> t; } #define reep(i,a,b) for(int i=(a);i<(b);++i) #define rep(i,n) reep((i),0,(n)) #define ALL(v) (v).begin(),(v).end() #define PB push_back #define F first #define S second #define mkp make_pair #define RALL(v) (v).rbegin(),(v).rend() // #define DEBUG #ifdef DEBUG #define dump(x) cout << #x << " = " << (x) << endl; #define debug(x) cout << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl; #else #define dump(x) #define debug(x) #endif #define MOD 1000000007LL #define EPS 1e-8 static const int INF=1<<24; int h,w; vector s; bool check(int a,int b,int c,int d){ if(0<=a&&a>h>>w; vector v(h); rep(i,h) cin>>v[i]; int a=-1,b=-1; rep(i,h){ rep(j,w){ if(v[i][j]=='#'){ a=i; b=j; break; } } if(a!=-1) break; } int su=0; rep(i,h){ rep(j,w){ if(v[i][j]=='#'){ su++; } } } if(su%2){ puts("NO"); return; } su/=2; if(a==-1&&b==-1){ puts("YES"); return; } reep(i,-h,h){ reep(j,-w,w){ if(i==a&&j==b){ continue; } // cout<