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#include <iostream>
#include <string>
using namespace std;
int main() {
string str;
getline(cin,str);
int count = 0;
if(str.empty())
{
cout << "0";
return 0;
}
count = 1;
for(int i = 0; i < str.length(); i++)
{
if(str[i] == ' ')
count++;
}
if(str[0] == ' ')
count--;
if(str[str.length()-1] == ' ')
count--;
cout << count;
return 0;
}
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