Submission #9821

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
9821	2014-09-28 11:00:59	veckal	Phibonacci (kriii2_P)	C++14	4 / 4	0 ms	1088 KiB

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#include<cstdio>
#include<utility>
using namespace std;
typedef long long ll;
const int MOD = 1000000000 + 7;
ll n, k;
struct Matrix {
  ll mat[2][2];
  Matrix() {
    mat[0][0]=mat[0][1]=mat[1][0]=mat[1][1]=0;
  }
};
Matrix operator *(Matrix& A, Matrix& B) {
  Matrix ret;
  for (int i=0; i<2; ++i)
    for (int j=0; j<2; ++j)
      for (int k=0; k<2; ++k)
        ret.mat[i][j] = (ret.mat[i][j] + A.mat[i][k] * B.mat[k][j])%MOD;
  return ret;
}
Matrix power(Matrix base, ll exp) {
  Matrix ret;
  ret.mat[0][0] = ret.mat[1][1] = 1;
  while(exp) {
    if (exp&1) ret = ret * base;
    base = base * base;
 
 
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• Subtask 1: 1 / 1
• Subtask 2: 3 / 3