#include <bits/stdc++.h>
using namespace std;
int main()
{
char s[101];
int nr,i;
cin.getline(s,101);
if(s[0]!=' ')
nr=1;
else
nr=0;
for(i=0; i<strlen(s); i++)
if(s[i]==' ' and s[i+1]!=' ')
nr++;
cout<<nr;
}
I2luY2x1ZGUgPGJpdHMvc3RkYysrLmg+CnVzaW5nIG5hbWVzcGFjZSBzdGQ7CgppbnQgbWFpbigpIAp7CgljaGFyIHNbMTAxXTsKICAgIGludCBucixpOwogICAgY2luLmdldGxpbmUocywxMDEpOwogICAgaWYoc1swXSE9JyAnKQogICAgICAgbnI9MTsKICAgICAgZWxzZQogICAgICAgbnI9MDsKICAgIGZvcihpPTA7IGk8c3RybGVuKHMpOyBpKyspCiAgICAgICAgIGlmKHNbaV09PScgJyBhbmQgc1tpKzFdIT0nICcpCiAgICAgICAgICAgICBucisrOwogICAgIGNvdXQ8PG5yOwp9