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C++

#include <bits/stdc++.h>

#define ll long long 

#define MOD 1000000007

using namespace std;

ll modPow(ll a, ll n, ll mod) {

    ll res = 1;

    while (n > 0) {

        if (n % 2 == 1) {

            res *= a;

            res %= mod;

        }

        a *= a;

        a %= mod;

        n /= 2;

    }

    return res;

}

int main() 

{

    freopen("SPOW.INP", "r", stdin);

    freopen("SPOW.OUT", "w", stdout);

    ll a, n; cin >> a >> n; 

    ll S = (a + n) % MOD;

    ll T = modPow(a, n, MOD);

    cout << S << endl << T << endl; 

}

$\\$$\\$

Python $\\$

import sys

sys.stdin = open("SPOW.INP", 'r')

sys.stdout = open("SPOW.OUT", 'w')

a, n = map(int, input().split())

S = (a+n) % (10**9+7)

T = pow(a, n, 10**9+7)

print(S)

print(T)

#include <bits/stdc++.h>
#define int long long 
const MOD 1000000007
using namespace std;
int OK(int a, int n, int mod)
{
    int s = 0;
    int x = 1;
    for (int i = 1; i <= n; i ++)
    {
        x = (x * a) % mod;
        s = (s + x) % mod;
    }
    return s;
}
int main()
{
    int a, n; cin >> a >> n;
    int S = (a + n) % MOD;
    int T = OK(a, n, MOD);
    cout << S << endl << T; 
}