#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int a,b,c,n=0; cin>>a>>b>>c; if((a%4==0&&a%100!=0)||(a%400==0)) { n=n+1; } if((b%4==0&&b%100!=0)||(b%400==0)) { n=n+1; } if((c%4==0&&c%100!=0)||(c%400==0)) { n=n+1; } cout<<n<<endl; return 0; }