import core.bitop, std.algorithm, std.ascii, std.bigint, std.conv, std.math,
    std.functional, std.numeric, std.range, std.stdio, std.string, std.random,
    std.typecons, std.container, std.format;

// dfmt off
T lread(T = long)(){return readln.chomp.to!T();}
T[] aryread(T = long)(){return readln.split.to!(T[])();}
void scan(TList...)(ref TList Args){auto line = readln.split();
foreach (i, T; TList){T val = line[i].to!(T);Args[i] = val;}}
alias sread = () => readln.chomp();enum MOD = 10 ^^ 9 + 7;
alias PQueue = BinaryHeap!(Array!long, "a<b");
// dfmt on

void main()
{
    long N, K;
    scan(N, K);
    auto A = aryread();
    long head;
    long tail;

    foreach (i; 0 .. N)
        foreach (j; 0 .. N)
            if (A[j] < A[i])
            {
                if (i < j)
                    head++;
                tail++;
            }
    long ans = (head * K) % MOD;
    long mul = ((K - 1) * K / 2) % MOD;
    ans = (ans + (mul * tail)) % MOD;
    writeln(ans);
}
