import std;

void main () {
    int N = readln.chomp.to!int;
    auto A = new string[](N);
    foreach (i; 0 .. N) {
        A[i] = readln.chomp;
    }

    int b = 0;
    foreach (i; 0 .. N) {
        foreach (j; 0 .. N) {
            if (A[i][j] == '#') {
                b++;
            }
        }
    }

    bool ok = true;
    if (N % 2 == 0 && b % 2 == 1) {
        ok = false;
    }

    if (ok) {
        writeln("Yes");
    }
    else {
        writeln("No");
    }
}

void read (T...) (string S, ref T args) {
    import std.conv : to;
    import std.array : split;
    auto buf = S.split;
    foreach (i, ref arg; args) {
        arg = buf[i].to!(typeof(arg));
    }
}