#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,c,b,suM; suM=0; cin>>a>>b>>c; if(a%4==0&&a%100!=0||a%400==0) suM++; if(b%4==0&&b%100!=0||b%400==0) suM++; if(c%4==0&&c%100!=0||a%400==0) suM++; cout<<suM; }