#include<iostream> #include<cstdio> using namespace std; int main(){ int n,a,b,c; cin>>a>>b>>c; n=0; 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; return 0; }