Submission #782950

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
782950	2023-07-14 12:21:04	devariaota	The Xana coup (BOI21_xanadu)	C++17	0 / 100	1 ms	468 KiB

xanadu

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,m;
ll a[2005],b[2005];
ll pref[2005],suff[2005];
ll mod=1e9+7;
ll jawab;
vector <ll> ans;
ll fact (ll n){
    if (n==0) return 1;
    return n%mod*fact(n-1)%mod;
}
ll kali (ll a, ll b){
    return (a*b)%mod;
}
ll simpan=1;
void fexpo(ll a, ll b){
    // cout<<a<<" "<<b<<endl;
    if (b==1) {
        simpan=kali(simpan,a);
        return;
    }
    if (b%2==0){
        fexpo(kali(a,a),b/2);
    }
    else{
        simpan=kali(simpan,a);
        fexpo(kali(a,a),(b-1)/2);
    }
 
 
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