import java.io.DataInputStream;
import java.io.IOException;
import java.util.*;
import java.io.*;
class Fenwick{
private int data_[];
public int query(int index){
int ret=0;
for(;index>0;index-=(index&-index)){
ret+=data_[index];
}
return ret;
}
public void update(int index){
for(++index;index<data_.length;index+=(index&-index)){
++data_[index];
}
}
public Fenwick(int n){
data_=new int[n+1];
}
}
class Element{
long height;
int index;
}
public class Mountains {
static class Reader {
final private int BUFFER_SIZE = 1 << 16;
private DataInputStream din;
private byte[] buffer;
private int bufferPointer, bytesRead;
public Reader() {
din = new DataInputStream(System.in);
buffer = new byte[BUFFER_SIZE];
bufferPointer = bytesRead = 0;
}
public int nextInt() throws IOException {
int ret = 0;
byte c = read();
while (c <= ' ') {
c = read();
}
do {
ret = ret * 10 + c - '0';
} while ((c = read()) >= '0' && c <= '9');
return ret;
}
public long nextLong() throws IOException {
long ret = 0;
byte c = read();
while (c <= ' ') {
c = read();
}
do {
ret = ret * 10 + c - '0';
} while ((c = read()) >= '0' && c <= '9');
return ret;
}
private void fillBuffer() throws IOException
{
bytesRead = din.read(buffer, bufferPointer = 0, BUFFER_SIZE);
if (bytesRead == -1) {
buffer[0] = -1;
}
}
private byte read() throws IOException
{
if (bufferPointer == bytesRead) {
fillBuffer();
}
return buffer[bufferPointer++];
}
}
public static void main(String[] args) throws IOException {
Reader reader = new Reader();
int n = reader.nextInt();
Fenwick fw=new Fenwick(n);
Element[] arr = new Element[n];
for(int i=0;i<n;++i){
Element el = arr[i] = new Element();
el.height = reader.nextLong();
el.index = i;
}
Arrays.sort(arr, (x,y) -> Long.compare(x.height,y.height));
long ans=0;
for(int i=0;i<n;){
final long val=arr[i].height;
int j;
for(j=i;j<n&&arr[j].height==val;++j){
final int idx=arr[j].index;
final int tmp=fw.query(idx);
ans+=tmp*(long)(i-tmp);
}
for(;i<j;++i){
final int idx=arr[i].index;
fw.update(idx);
}
}
System.out.println(ans);
}
}
