Submission #9777

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
9777	2014-09-28 08:53:07	jaehadad	Quaternion inverse (kriii2_Q)	C++14	1 / 4	1000 ms	1680 KiB

Q

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#include<cstdio>
#include<cassert>
#include<cstring>
#include<map>
#include<set>
#include<time.h>
#include<algorithm>
#include<stack>
#include<queue>
#include<utility>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
using namespace std;
int M;
long pow(long long a, long long n, long long M) {
  long long ret = 1, unit = a % M;
  for(int y = 0; (1ll<<y) <= n; ++y) {
    if(n & (1ll << y)) 
      ret = (ret * unit) % M;
    unit = (unit * unit) % M;
  }
  return ret;
}
long long mod_inverse(long long a, long long M) {
  return pow(a, M-2, M);
 
 
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