#include <bits/stdc++.h>

using namespace std;

#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()

template<typename A, typename B> inline bool chmax(A &a, B b) { if (a<b) { a=b; return 1; } return 0; }
template<typename A, typename B> inline bool chmin(A &a, B b) { if (a>b) { a=b; return 1; } return 0; }

typedef unsigned long long ull;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<int, pii> P;

const ll INF = 1ll<<29;
const ll MOD = 1000000007;
const double EPS  = 1e-10;

string s;
string cww = "cww";
ll dp[1112345][4];

int main() {
	cin >> s;
	
	dp[0][0] = 1;
	
	REP(i, s.size()) {
		REP(j, cww.size() + 1) {
			if (!dp[i][j]) continue;
			
			dp[i + 1][j] += dp[i][j];
			
			if (j < 3 && s[i] == cww[j]) dp[i + 1][j + 1] += dp[i][j];
		}
	}
	
	cout << dp[s.size()][3] << endl;
	return 0;
}