#include <stdio.h>
int custom_strlen(const char *str) {
// Your logic here
char * c = (char *)str;
int counter = 0;
while(1){
if(*c != '\0'){
counter++;
}else{
break;
}
c++;
}
return counter;
}
int main() {
char str[101];
fgets(str, sizeof(str), stdin);
// Remove newline if present
int i = 0;
while (str[i] != '\0') {
if (str[i] == '\n') {
str[i] = '\0';
break;
}
i++;
}
printf("%d", custom_strlen(str));
return 0;
}