#include<iostream> #include<cstdio> //scanf()\printf() #include<cstring> #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int sum=0; for(int i=1;i<=40;i++){ if(i%2==0) sum++; sum++; } cout<<sum; return 0; }