#include<iostream>
using namespace std;
int main(){
    int a,b,c,count=0;
    for(a=1;a<=5;a++)            
        for(b=1;b<=5;b++)        
            for(c=1;a!=b&&c<=5;c++)   
                if(c!=a&&c!=b)  
                {
                	count++;
				}
 cout<<count<<endl;
return 0;
}
/**************************************************************
	Problem: 1256
	User: admin
	Language: C++
	Result: Runtime Error
****************************************************************/