#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) for(int i=0; i<(n); i++)
struct cww{cww(){ios::sync_with_stdio(false);cin.tie(0);}}star;
int main()
{
	string S;
	cin >> S;

	int count{};
	REP( i, (int)S.size() )
	{
		if( S[i] == 'n' && S[i+1] == 'm' && S[i+2] == 'i' )
		{
			count++;
		}
	}
	cout << count + 1 << endl;
	return 0;
}