import std;
void main() {
    const n = readln.chomp.to!int;
    const a = readln.split.to!(int[]);
    const x = a[0] + a[$-1];
    writeln(yes(iota(1, n / 2).map!(i => a[i] + a[n - 1 - i]).all!(e => e == x)));
}

pragma(inline)
string yes(const bool b) pure @nogc nothrow @safe {
    return b ? "Yes" : "No";
}