Language: C++

//Jay Shree Krishna
#include"bits/stdc++.h"
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define ll long long int
#define inf 1e18
#define sr string
#define mod 1000000007
#define start int t;cin>>t;while(t--)
#define db(x) cout<<#x<<"="<<x<<"\n"
#define db2(a,b)cout<<#a<<": "<<a<<" , "<<#b<<": "<<b<< endl;
#define db3(a,b,c)cout<<#a<<": "<<a<<" , "<<#b<<": "<<b<<" , "<<#c<<": "<<c<<endl;
#define forr(i,n) for (int i = 0; i < n; i++)
#define fr(i,n) for (int i = 1; i <= n; i++)
#define rep(i,j,k) for(int i = j; i < k; i++)
#define rp(i,j,k) for(int i = j; i <=k; i++)
#define nn "\n"
#define en "\n"
#define vvi vector<vector<int>>
#define vi vector<int>
#define si set<int>
#define mlsi multiset<int>
#define vc vector<char>
#define vs vector<string>
#define vli vector<long long int>
#define vpii vector<pair<int,int>>
#define pii pair<int,int>
#define mii map<int,int>
#define msi map<string,int>
#define mci map<char,int>
#define mpiii map<pair<int,int>,int>
#define um unordered_map
#define umii unordered_map<int,int>
#define umsi unordered_map<string,int>
#define umci unordered_map<char,int>
#define mkp make_pair
#define pb push_back
#define eb emplace_back
#define all(x) x.begin(),x.end()
#define sortv(x) sort(x.begin(),x.end())
#define sorta(x,n) sort(x,x+n)
#define sorted(x) is_sorted(x.begin(),x.end())
#define print_all(x) for(auto t:x) cout<<t<<" ";cout<<en;
#define mxe(x) *max_element(all(x))
#define mne(x) *min_element(all(x))
#define go(x) for(auto &[u,v]:x)
#define in(x) cin>>x
#define inn(x,y) cin>>x>>y
#define innn(x,y,z) cin>>x>>y>>z
#define innnn(x,y,z,v) cin>>x>>y>>z>>v
#define oo(x) cout<<x<<endl
#define oo2(x,y) cout<<x<<" "<<y<<endl
#define o3(x,y,z) cout<<x<<" "<<y<<" "<<z<<endl
#define ood(n,x) cout<<fixed<<setprecision(n)<<x<<"\n"
#define sz(x) x.size()
#define ff first
#define ss second
#define ooy cout<<"YES\n"
#define oon cout<<"NO\n" 
#define rr return
#define cc continue

using namespace std;

template<class T> bool ckmin(T &a, const T &b) { return a > b ? a = b, 1 : 0; }
template<class T> bool ckmax(T &a, const T &b) { return a < b ? a = b, 1 : 0; }
 
void read(vli &a,int n){
    a.resize(n);
    forr(i,n) cin>>a[i];
}


ll mod_pow(ll x, int n){
    if(n == 0)  return 1;
    ll res = 1;
    while(n > 0){
        if(n & 1)   res = res * x % mod;
        x = x * x % mod; 
        n >>= 1;
    }
 
    return res;
}

bool fine=0;
vli a;
ll n,m;
void solve(){
    in(n);
    if(n==1){
        oo(0);
        rr;
    }
    ll ans=1;
    ans=mod_pow(10,n);
    ans-=mod_pow(9,n);
    ans-=mod_pow(9,n);
    ans+=mod_pow(8,n);
    oo(ans%mod_pow);
    
    
}

int main(){
    #ifndef ONLINE_JUDGE 
    freopen("input1.txt", "r", stdin); 
    freopen("error.txt", "w", stderr); 
    freopen("output1.txt", "w", stdout); 
    #endif
    fast; 
   if(fine){
        start{
            solve();
        }
   }
   else solve();
    return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:99:11: error: invalid operands of types 'long long int' and 'long long int(long long int, int)' to binary 'operator%'
   99 |     oo(ans%mod_pow);
      |        ~~~^~~~~~~~
      |        |   |
      |        |   long long int(long long int, int)
      |        long long int
a.cc:50:21: note: in definition of macro 'oo'
   50 | #define oo(x) cout<<x<<endl
      |                     ^