#pragma GCC optimize("O3")
/*{{{*/
#include <bits/stdc++.h>
#ifdef LOCAL
int c_ = 0;
#define cout (c_?cerr:cout)
#define debug(...) \
{if(!c_++)cerr<<"\033[96;1m"; \
__VA_ARGS__; \
if(!--c_)cerr<<"\033[0m";}
#else
#define debug(...) {}
#endif
#define assrt(...) debug(\
if (not (__VA_ARGS__)) \
exit((cerr << __LINE__ << ": " << #__VA_ARGS__ << '\n', 0));\
)
#define st first
#define nd second
#define all(...) (__VA_ARGS__).begin(), (__VA_ARGS__).end()
using namespace std; using ll = long long;
template < typename t > using V = vector< t >;
template < typename t, size_t s > using A = array< t, s >;
void print() {cout << '\n';}
template< typename t, typename... v >
void print(const t& a, const v&... b)
{cout << a << (sizeof...(b)?" ":""); print(b...);}
template< typename t > void print_range(t a, const t& b)
{ while (a != b) cout << (*a++) << ' '; cout << '\n';}
#define dump(...) debug(print(#__VA_ARGS__,'=',__VA_ARGS__))
#define dump_range(...) debug(cerr<<#__VA_ARGS__ << ": "; print_range(__VA_ARGS__))
/*}}}*/
constexpr int hax = 3e3, wax = hax;
int h, w, tab[wax + 1];
int32_t main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> h >> w;
ll res = 0;
for (int i = 0; i < h; ++i)
{
string s; cin >> s;
int c = 0;
for (int j = w - 1; j >= 0; --j)
{
if (s[j] == 'J')
tab[j] += c;
if (s[j] == 'O')
++c;
if (s[j] == 'I')
res += tab[j];
}
}
print(res);
}
