제출 #19254

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
19254	2016-02-23 02:27:58	kaTkaHr	동전 (kriii4_E)	C++14	100 / 100	253 ms	2100 KiB

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#include <stdio.h>
#include<vector>
#include <algorithm>
#include <map>
using namespace std;
typedef long long ll;
const int MX = 255, 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):A(A), B(1){}
  frac(ll a, ll b){
    A = (a%MM+MM) % MM;
    B = (b%MM+MM) % MM;
  }
  frac(){A = 0, B = 1;}
  frac operator+ (const frac &l)const{
    return frac((A * l.B + B * l.A) % MM, B * l.B % MM);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 95 / 95