#include<iostream> using namespace std; int main(){ int y1,y2,y3,sum=0; cin>>y1>>y2>>y3; if(y1%4==0 && y1%100!=0 || y1%400=0){ sum++; } if(y2%4==0 && y2%100!=0 || y2%400=0){ sum++; } if(y3%4==0 && y3%100!=0 || y3%400=0){ sum++; } cout<<sum; return 0; }