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Cod sursa(job #277437)
#include<fstream.h>
long int nr[110], total;
int x[10],n,gata=0;
long int suma(int k)
{
long int s=0;
int i;
for (i=1;i<=k;i++)
s+=nr[x[i]];
return s;
}
ofstream out("loto.out");
void afisare()
{
int i;
for (i=1;i<=6;i++)
out<<nr[x[i]];
}
void back(int k)
{
int i;
for (i=1;i<=n && !gata;i++)
{
x[k]=i;
if (suma(k)<=total && !gata)
if (k==6)
{
if (suma(6)==total)
{
afisare();
gata=1;
}
}
else
back(k+1);
}
}
int main()
{
ifstream in("loto.in");
in>>n>>total;
int i;
for (i=1;i<=n;i++)
in>>nr[i];
back(1);
if (gata==0)
out<<-1;
return 0;
}