#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pb push_back
#define ff first
#define ss second
#define MOD 1000000009
#define INF 1000000019
#define INFL 1000000000000000099LL
ll n,q,s,t,a,b,c,ans,k,m;
ll dp[3007][3007][2];
char co[3007][3007];
int main()
{
ios_base::sync_with_stdio(0);cin.tie(0);
cin>>n>>m;
for(ll i=0;i<n;i++){
for(ll j=0;j<m;j++){
cin>>co[i][j];
}
}
for(ll i=n-1;i>=0;i--){
for(ll j=m-1;j>=0;j--){
dp[i][j][0]=dp[i+1][j][0];
dp[i][j][1]=dp[i][j+1][1];
if(co[i][j]=='O')
dp[i][j][1]++;
else if(co[i][j]=='I')
dp[i][j][0]++;
else
ans+=dp[i][j][0]*dp[i][j][1];
}
}
cout<<ans;
}
