#include<iostream> using namespace std; int main(){ int q=0,x=0,j=0,i=0,s=0; while(i<40){ if(i<10){ q=1; } else q=0; if(i<20&&i%2==0) x=1; else x=0; if(i%4==0) j=1; else j=0; if(q==1||x==1||j==1) s++; i++; } cout<<s<<endl; return 0; }