#include "hiccup.h"
#include <bits/stdc++.h>
using namespace std;
string s;
bool possible(int k) {
vector<int> v;
if (s[0] == '!') return false;
int waste = 0;
for (char i : s) {
if (i == 'H') v.push_back(0);
if ((v.back() == 0 and i == 'H') or (v.back() == 1 and i == 'C') or (v.back() >= 2 and i == '!')) v.back()++;
else if (not (waste and i == '!')) return false;
if (v.back() == k+2) v.pop_back(), waste = 1;
else waste = 0;
}
return v.empty();
}
int HicCup(string S) {
s = S;
int l = -1, r = 1000004;
while (l+1<r) {
int m = (l+r)/2;
if (possible(m)) l = m;
else r = m;
}
return l;
}
