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Cod sursa(job #718042)
#include <fstream>
using namespace std;
ifstream f("iepuri.in");
ofstream g("iepuri.out");
int main()
{
int n,nr,i,a,b,c,x,y,z,prez,j;
f>>nr;
for(i=1;i<=nr;i++)
{
f>>x>>y>>z>>a>>b>>c>>n;
prez=x*c+y*b+z*a;
if(n>=4)
{
for(j=5;j<=n+1;j++)
{
x=y;
y=z;
z=prez;
prez=x*c+y*b+z*a;
}
g<<prez<<"\n";
}
else if(n==3)
g<<z<<"\n";
else
if(n==2)
g<<y<<"\n";
else if(n==1)
g<<x<<"\n";
}
return 0;
}