Submission #19271

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
19271	2016-02-23 16:53:14	kaTkaHr	창문 (kriii4_C)	C++14	100 / 100	0 ms	1084 KiB

C

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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%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);
    }
    frac operator*(const frac &l)const{
 
 
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• Subtask 1: 3 / 3
• Subtask 2: 97 / 97