【小米oj】 dreamstart 的催促

#define mm(a) memset(a,0,sizeof(a));
#define max(x,y) (x)>(y)?(x):(y)
#define min(x,y) (x)<(y)?(x):(y)
#define Fopen freopen("1.in","r",stdin); freopen("m.out","w",stdout);
#define rep(i,a,b) for(int i=(a);i<=(b);i++)
#define per(i,b,a) for(int i=(b);i>=(a);i--)
#include<bits/stdc++.h>
typedef long long ll;
#define PII pair<ll,ll>
using namespace std;
const int INF=0x3f3f3f3f;
const int MAXN=(int)2e5 + 5;
const ll mod=10000019;

ll qpow(ll x,ll y,ll mod) {
    ll ans=1;
    while(y) {
        if(y&1)ans=(x*ans)%mod;
        x=(x*x)%mod;
        y>>=1;
    }
    return ans;
}
int phi(int n) {
    int rea = n;
    for(int i=2; i*i<=n; i++) {
        if(n % i == 0) {
            rea = rea - rea / i;
            while(n % i == 0) n /= i;
        }
    }
    if(n > 1)
        rea = rea - rea / n;
    return rea;
}

ll gao(ll x,ll i) {
    ll p=phi(mod);
    return qpow(x,qpow(i,i,p),mod);
}

int main() {
    int n;
    scanf("%d",&n);
    ll ans=0;
    for(int i=1; i<=n; i++) {
        ll x;
        scanf("%lld",&x);
        ans+=gao(x,(ll)i);
        ans%=mod;
    }
    printf("%lld
",ans);
    return 0;
}