#include <bits/stdc++.h>
using namespace std;
#ifdef tabr
#include "library/debug.cpp"
#else
#define debug(...)
#endif
int longest_laugh(string s) {
int n = (int) s.size();
vector<int> a(n, -1);
for (int i = 0; i < n; i++) {
if (s[i] == 'h') {
a[i] = i % 2;
} else if (s[i] == 'a') {
a[i] = (i + 1) % 2;
}
}
int ans = 0;
for (int beg = 0, end = 0; beg < n; beg = end) {
while (end < n && a[beg] == a[end]) {
end++;
}
if (a[beg] != -1) {
ans = max(ans, end - beg);
}
}
return ans;
}
#ifdef tabr
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
return 0;
}
#endif
