#include <iostream>
#include <string>
#include <cstring>
using namespace std;
int main() {
string s("abc");
s[1]=0;
cout << s.length() << endl;
cout << strlen(s.c_str()) << endl;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8c3RyaW5nPgojaW5jbHVkZSA8Y3N0cmluZz4KdXNpbmcgbmFtZXNwYWNlIHN0ZDsKCmludCBtYWluKCkgewoJc3RyaW5nIHMoImFiYyIpOwogICAgc1sxXT0wOwogICAgY291dCA8PCBzLmxlbmd0aCgpIDw8IGVuZGw7CiAgICBjb3V0IDw8IHN0cmxlbihzLmNfc3RyKCkpIDw8IGVuZGw7CglyZXR1cm4gMDsKfQ==