Cod sursa(job #636365)
Utilizator | Data | 19 noiembrie 2011 19:21:38 | |
---|---|---|---|
Problema | Dirichlet | Scor | 0 |
Compilator | cpp | Status | done |
Runda | .com 2011 | Marime | 0.33 kb |
#include<fstream>
using namespace std;
long long gauss(long long prev)
{
return (prev*(prev+1))/2;
}
int main()
{
long long n,prev=1,i;
ifstream q("dirichlet.in");
ofstream w("dirichlet.out");
q>>n;
for(i=2;i<=n;i++)
{
prev=(prev+gauss(prev));
}
w<<prev;
return 0;
}