#include<iostream> using namespace std; int main(){ int a,b,c; cin>>a>>b>>c; int sum=0; if(a%4==0&&a%100!=0) sum+=1; else if(a%400==0) sum+=1; if(b%4==0&&b%100!=0) sum+=1; else if(b%400==0) sum+=1; if(c%4==0&&c%100!=0) sum+=1; else if(c%400==0) sum+=1; cout<<sum<<endl; return 0; }