#include <bits/stdc++.h>
using namespace std;
int main() {
string s;
cin >> s;
int res = 1;
char curr_char = ' ';
int curr = 1;
for(int i = 0; i < s.size(); i++) {
if(s[i] == curr_char) {
curr++;
} else {
res = max(res, curr);
curr_char = s[i];
curr = 1;
}
}
cout << max(res, curr);
return 0;
}
I2luY2x1ZGUgPGJpdHMvc3RkYysrLmg+CnVzaW5nIG5hbWVzcGFjZSBzdGQ7CgppbnQgbWFpbigpIHsKCXN0cmluZyBzOwoJY2luID4+IHM7CgkKCWludCByZXMgPSAxOwoJY2hhciBjdXJyX2NoYXIgPSAnICc7CglpbnQgY3VyciA9IDE7CgkKCWZvcihpbnQgaSA9IDA7IGkgPCBzLnNpemUoKTsgaSsrKSB7CgkJaWYoc1tpXSA9PSBjdXJyX2NoYXIpIHsKCQkJY3VycisrOwoJCX0gZWxzZSB7CgkJCXJlcyA9IG1heChyZXMsIGN1cnIpOwoJCQljdXJyX2NoYXIgPSBzW2ldOwoJCQljdXJyID0gMTsKCQl9Cgl9CgkKCWNvdXQgPDwgbWF4KHJlcywgY3Vycik7CgkKCXJldHVybiAwOwp9