제출 #687701

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
687701	2023-01-26 21:24:05	divad	The grade (info1cup18_thegrade)	C++14	25 / 100	44 ms	3256 KiB

thegrade

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#include <bits/stdc++.h>
#define int long long
#define NMAX 1000002
#define FMAX 100002
#define MOD  1000000007
using namespace std;
int fr[NMAX],fact[FMAX],invfact[FMAX],nrperm;
int q,p,t,x,n,sum;
int lgput(int n, int a){
    if(a == 0){
        return 1;
    }else{
        if(a%2 == 0){
            int val = lgput(n, a/2);
            return (val*val)%MOD;
        }else{
            return (n*lgput(n, a-1))%MOD;
        }
    }
}
int comb(int n, int m){
    return ((fact[n]*invfact[m])%MOD*invfact[n-m])%MOD;
}
int stars_and_bars(int n, int k){
    return comb(n+k-1, k-1);
}
 
 
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