#include using namespace std ; #define fast_input_output ios::sync_with_stdio(false); cin.tie(nullptr); typedef long long ll ; typedef long double ld ; typedef pair P ; typedef tuple TP ; #define chmin(a,b) a = min(a,b) #define chmax(a,b) a = max(a,b) #define bit_count(x) __builtin_popcountll(x) #define gcd(a,b) __gcd(a,b) #define lcm(a,b) a / gcd(a,b) * b #define rep(i,n) for(int i = 0 ; i < n ; i++) #define rrep(i,a,b) for(int i = a ; i < b ; i++) #define endl "\n" int H , W , m ; char S[202][202] , C[202][202] , D[202][202] ; bool T[2][202] ; int main(){ fast_input_output cin >> H >> W ; rep(i,H) rep(j,W) cin >> S[i][j] ; cin >> m ; rep(i,m){ int t , n ; cin >> t >> n ; t-- ; n-- ; T[t][n] = true ; } for(int j = W - 2 ; j >= 0 ; j--){ if(S[H-1][j] == S[H-1][j+1] && T[1][j]){ rep(x,H) rep(y,j+1) S[x][y] = S[x][y] == '#' ? '.' : '#' ; } } for(int i = H - 2 ; i >= 0 ; i--){ if(S[i][W-1] == S[i+1][W-1] && T[0][i]){ rep(x,i+1) rep(y,W) S[x][y] = S[x][y] == '#' ? '.' : '#' ; } } rep(i,H) rep(j,W) C[i][j] = (i + j) % 2 == 0 ? '#' : '.' ; rep(i,H) rep(j,W) D[i][j] = (i + j) % 2 == 0 ? '.' : '#' ; bool ok1 = true , ok2 = true ; rep(i,H) rep(j,W) if(S[i][j] != C[i][j]) ok1 = false ; rep(i,H) rep(j,W) if(S[i][j] != D[i][j]) ok2 = false ; if(ok1 || ok2) cout << "Yes" << endl ; else cout << "No" << endl ; }