Cod sursa(job #2331246)

Utilizator mirceaisherebina mircea mirceaishere Data 29 ianuarie 2019 13:24:38
Problema Dirichlet Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include <math.h>
#include <fstream>
using namespace std;
ifstream fin("dirichlet.in");
ofstream fout("dirichlet.out");

long long n, m, i, j, fact[2000100];

int main(){
    fin>>n;
    fact[0]=1;
    for(i=1; i<=2000100; i++){
        fact[i]=i*fact[i-1];
    }
    fout<<(fact[2*n]/fact[n])/fact[n+1];
}