#include <iostream>
using namespace std;
int main ()
{
int sum=0;
for (int i=1; i<=100; i++)
sum+=i%3;
cout<<sum;
return 0;
}
#include <iostream>
using namespace std;
int main ()
{
int sum=0;
for (int i=1; i<=100; i++)
sum+=i%3;
cout<<sum;
return 0;
}