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Cod sursa(job #804150)
#include <fstream>
#include <stdio.h>
int a[4][4],b[4][4],c[4][4];
void inmul(int e[4][4],int f[4][4])
{int i,j,k;
memset(c,0,sizeof(c));
for(i=1;i<=3;i++)
for(j=1;j<=3;j++)
for(k=1;k<=3;k++)
c[i][j]+=e[i][k]*f[k][j];
for(i=1;i<=3;i++)
for(j=1;j<=3;j++)
f[i][j]=c[i][j];
}
ifstream fin("iepuri.in");
ofstream fout("iepuri.out");
int main()
{ int i,j,t,l;
fin>>t;
for(l=1;l<=t;l++)
{
memset(a,0,sizeof(a));
memset(b,0,sizeof(b));
fin>>b[3][1]>>b[2][1]>>b[1][1];
fin>>a[1][1]>>a[1][2]>>a[1][3];
int n;
fin>>n;
n-=2;
a[2][1]=1;
a[3][2]=1;
int p;
for(p=n;p;p=p>>1)
{
if(p&1)inmul(a,b);
inmul(a,a);
}
fout<<b[1][1]<<"\n";
}
}