Cod sursa(job #2542793)
Utilizator | Gaina Florin Florinos123 | Data | 10 februarie 2020 16:41:10 |
---|---|---|---|
Problema | Dezastru | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.6 kb |
#include <fstream>
using namespace std;
ifstream f ("dezastru.in");
ofstream g ("dezastru.out");
int n, k, i, nr, sol[30];
double rez, v[30];
void bkt (int poz, double produs)
{
for (int i=sol[poz-1]+1; i<=n; i++)
{
sol[poz]= i;
double aux = produs * v[sol[poz]];
if (poz == k)
{
nr ++;
rez += aux;
}
else
bkt(poz+1, aux);
}
}
int main()
{
f >> n >> k;
for (i=1; i<=n; i++)
f >> v[i];
bkt(1, 1);
rez /= nr;
g << rez;
return 0;
}