//注释 //1.头文件 # include<iostream> using namespace std; //2.主程序入口 int main(){ //3.主程序 int y1,y2,y3,n=0; cin>>y1>>y2>>y3; if(y1%400==0 || y1%100!=0&&y1%4==0){ n++; } if(y2%400==0 || y2%100!=0&&y2%4==0){ n++; } if(y3%400==0 || y3%100!=0&&y3%4==0){ n++; } cout<<n<<endl; //4.程序结束 return 0; }