Pagini recente » Cod sursa (job #74796) | Cod sursa (job #2330902) | Cod sursa (job #58669) | Cod sursa (job #826416) | Cod sursa (job #2550111)
#include <bits/stdc++.h>
using namespace std;
ifstream in("kfib.in");
ofstream out("kfib.out");
int k;
const int mod=666013;
struct mat
{
int a[3][3];
mat()
{
memset(a,0,sizeof(a));
}
};
mat prod(mat A,mat B)
{
mat ans;
for(int i=0;i<2;i++)
for(int j=0;j<2;j++)
for(int k=0;k<2;k++)
ans.a[i][j]=(ans.a[i][j]+1LL*A.a[i][k]*B.a[k][j])%mod;
return ans;
}
mat lgp(int p,mat A)
{
mat ans;
ans.a[0][0]=ans.a[1][1]=1;
while(p)
{
if(p&1)
{
ans=prod(ans,A);
p--;
}
A=prod(A,A);
p>>=1;
}
return ans;
}
mat M,Sol,aux;
int main()
{
in>>k;
M.a[0][0]=M.a[0][1]=M.a[1][0]=1;
Sol.a[0][0]=1;
Sol.a[1][0]=1;
if(k>=2) {
M=lgp(k-2,M);
Sol=prod(M,Sol);
}
out<<Sol.a[0][0];
return 0;
}