#include<bits/stdc++.h> using namespace std; int main(){ int a,b,c,sum; cin>>a>>b>>c; sum=0; if(a%4==0&&a%100!=0||a%400==0){ sum=sum+1; } if(b%4==0&&b%100!=0||b%400==0){ sum=sum+1; }if(c%4==0&&c%100!=0||c%400==0){ sum=sum+1; } cout<<sum; }