#include using namespace std; #define rep(i,a,b) for(LL i = a;ib; i--) #define INF ((1LL<<62)-(1LL<<31)) #define ooki 9,223,372,036,854,775,807 #define tii -9,223,372,036,854,775,808 typedef long long LL; int main(){ string s; cin >> s; int count = 0; rep(i,0,s.size()){ if(s[i]=='m'){count++;} } cout << count << endl; }