Submission #19255

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
19255	2016-02-23 04:47:35	kaTkaHr	순열 (kriii4_T)	C++14	8 / 100	2000 ms	1084 KiB

T

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#include <stdio.h>
#include<vector>
#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):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: 8 / 8
• Subtask 2: 0 / 92