Description
Input
Output
Sample Input
2934
Sample Output
718831
Source
#include <iostream>
#include <cstring>
using namespace std;
int main()
{
int n, account = 0, leave = 0, tmp = 0;
while(~scanf("%d", &n))
{
account = 0;
leave = n / 3;
for(int i = 0; i <= leave; i++)
{
tmp = n - i * 3;
account += tmp / 2 + 1;
}
cout<<account<<endl;
}
return 0;
}