#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%400==0||a%4==0&&a%100!=0) n++; if(b%400==0||b%4==0&&b%100!=0) n++; if(c%400==0||c%4==0&&c%100!=0) n++; cout<<n<<endl; return 0; }