/*
* @Author: hungeazy
* @Date: 2026-03-04 23:24:15
* @Last Modified by: hungeazy
* @Last Modified time: 2026-03-11 23:45:42
*/
#include <bits/stdc++.h>
using namespace std;
string s;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL); cout.tie(NULL);
cin >> s;
int n = s.size(), cnt = 0, ans = 0;
char x = '#';
for (int i = 0; i < n; i++)
if (x != s[i])
{
ans = max(ans,cnt);
cnt = 1;
x = s[i];
}
else if (x == s[i]) cnt++;
ans = max(ans,cnt);
cout << ans;
return 0;
}
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