#include<bits/stdc++.h> using namespace std; bool it(int year) { return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0); } int main() { int a, b, c; cin >> a >> b >> c; int count = 0; if (it(a)) count++; if (it(b)) count++; if (it(c)) count++; cout << count << endl; return 0; }