Submission #19246

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
19246	2016-02-22 13:53:33	kaTkaHr	Ω (kriii4_P3)	C++14	100 / 100	31 ms	1428 KiB

P3

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#include <stdio.h>
#include <algorithm>
#include <map>
using namespace std;
typedef long long ll;
const int MX = 105, MM = 1000000007;
ll rv(ll A){
  ll R = 1, B = MM-2;
  while(B){
    if( B&1 ) R = R * A % MM;
    A = A * A % MM; B /= 2;
  }
  return R;
}
struct frac{
  ll A, B;
  frac(ll A, ll B):A(A), B(B){}
  frac(){A = 0, B = 1;}
  frac operator+ (const frac &l)const{
    return frac((A * l.B + B * l.A) % MM, B * l.B % MM);
  }
  frac operator*(const frac &l)const{
    return frac(A*l.A % MM, B*l.B % MM);
  }
  frac operator/(const frac &l)const{
 
 
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• Subtask 1: 100 / 100