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