#include <bits/stdc++.h>
#define int long long
#define ri register int
using namespace std;
int n,m,ans,s[2];
char ch[25];
template <typename T> inline void read(T &x) {
	register T f=0,c=getchar();
	for (; c<48||57<c; c=getchar()) if (c=='-') f=1;
	for (x=0; 48<=c&&c<=57; c=getchar()) x=(x<<3)+(x<<1)+(c&15);
	if (f) x=~(--x);
}
template <typename T> inline void print(T x) {
	if (x<0) putchar('-'),x=~(--x);
	if (x>9) print(x/10);
	putchar(x%10|48);
}
signed main() {
	read(n),read(m);
	for (ri i=1,cnt; i<=n; ++i) {
		scanf("%s",ch),cnt=0;
		for (ri j=0; j<m; ++j)
			if (ch[j]=='1') ++cnt;
		ans+=s[cnt&1^1],++s[cnt&1];
	}
	print(ans);
	return 0;
}
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

typedef vector<int> vi;
typedef vector<ll> vll;

typedef vector<vi> vvi;
typedef vector<vll> vvll;

typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

typedef vector<pii> vpii;
typedef vector<pll> vpll;

typedef vector<vpii> vvpii;
typedef vector<vpll> vvpll;

#define pb push_back
#define mp make_pair
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) (int)(x).size()
#define fi first
#define se second

template<class T> bool ckmin(T &a, const T &b) {return a > b ? a = b, 1 : 0;}
template<class T> bool ckmax(T &a, const T &b) {return a < b ? a = b, 1 : 0;}

namespace debug {
    void __print(int x) {cerr << x;}
    void __print(long long x) {cerr << x;}
    void __print(double x) {cerr << x;}
    void __print(long double x) {cerr << x;}
    void __print(char x) {cerr << '\'' << x << '\'';}
    void __print(const string &x) {cerr << '\"' << x << '\"';}
    void __print(bool x) {cerr << (x ? "true" : "false");}

    template<typename T, typename V>
    void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
    template<typename T>
    void __print(const T &x) {int f = 0; cerr << '{'; for(auto z : x) cerr << (f++ ? "," : ""), __print(z); cerr << "}";}
    void _print() {cerr << "]\n";}
    template <typename T, typename... V>
    void _print(T t, V... v) {__print(t); if(sizeof...(v)) cerr << ", "; _print(v...);}

#ifdef ljuba
#define dbg(x...) cerr << "LINE(" << __LINE__ << ") -> " << "[" << #x << "] = ["; _print(x)
#else
#define dbg(x...)
#endif
}

using namespace debug;

const char nl = '\n';

void solve() {
    int n, m;
    cin >> n >> m;
    vll cnt(2);
    for(int i = 0; i < n; ++i) {
        string s;
        cin >> s;
        ++cnt[count(all(s), '1')%2];
    }
    cout << cnt[0] * cnt[1] << nl;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

#ifdef ljuba
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    freopen("error.txt", "w", stderr);
#endif

    int testCases = 1;
//    cin >> testCases;
    while(testCases--)
        solve();

}