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Cod sursa(job #460796)
#include <cstdio>
#include <cstring>
#define file_in "kfib.in"
#define file_out "kfib.out"
#define mod 666013
int n,a[2][2],b[2][2];
void citire()
{
freopen(file_in,"r",stdin);
freopen(file_out,"w",stdout);
scanf("%d", &n);
}
void mul(int a[2][2],int b[2][2])
{
int i,j,k;
int c[2][2];
memset(c,0,sizeof(c));
for (i=0;i<2;++i)
for (j=0;j<2;++j)
for (k=0;k<2;++k)
c[i][j]=((long long)c[i][j]+(long long)a[i][k]*b[k][j])%mod;
memcpy(a,c,sizeof(c));
}
void solve()
{
a[0][0]=1;
b[0][0]=1;
b[0][1]=1;
b[1][0]=1;
n--;
while(n)
{
if (n&1)
mul(a,b);
mul(b,b);
n>>=1;
}
printf("%d", a[0][0]);
}
int main()
{
citire();
solve();
fclose(stdin);
fclose(stdout);
return 0;
}