#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;

string s, cww = "cww";
char s_[100001];
ll dp[100001][4];
int N;

int main(){
    scanf("%s", s_);
    s = string(s_);
    dp[0][0] = 1;
    N = sz(s);
    rep(i, N)rep(j, 4){
        dp[i + 1][j] += dp[i][j];
        if(j < 3 && s[i] == cww[j])dp[i + 1][j + 1] += dp[i][j];
    }
    cout << dp[N][3] << endl;
}