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