#include<iostream> #include<cstdio> #include<cstring> using namespace std; int main(){ int year1,year2,year3,sum; sum=0; cin>>year1>>year2>>year3; if(((year1%4==0)&&(year1%100!=0))||(year1%400==0)){ sum++; } if(((year2%4==0)&&(year2%100!=0))||(year2%400==0)){ sum++; } if(((year3%4==0)&&(year3%100!=0))||(year3%400==0)){ sum++; } cout<<sum; }