Problem: 2050C - Uninteresting Number
Language: C++23 (GCC 14-64, msys2)

Previous submission (verdict: Wrong answer on test 3):
#include <bits/stdc++.h>
#include <iostream>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <numeric>
#include <algorithm>
#include <forward_list>
#include <limits.h>
#include <iomanip>
#include <initializer_list>
using namespace std;
 

typedef long long ll;
typedef unsigned long long ull;
typedef long double lld;
typedef long long int lli;
typedef pair<int, int> pii;
typedef map<int, int> mii;
typedef set<int> msi;
typedef map<int ,bool> mib;

#define int long long
// #define INT_MAX LLONG_MAX
// #define INT_MIN LLONG_MIN
#define endl '\n'
#define vin(a)                        \
 for (int i = 0; i < (a).size(); i++) \
		cin >> a[i];
#define vout(a)                     \
 for (int i = 0; i < a.size(); i++) \
		cout << a[i] << ' ';              \
 cout << endl;
#define vpin(a)                       \
 for (int i = 0; i < (a).size(); i++) \
		cin >> a[i].first;                  \
 for (int i = 0; i < (a).size(); i++) \
		cin >> a[i].second;
#define vpinr(a)                      \
 for (int i = 0; i < (a).size(); i++) \
		cin >> a[i].second;                 \
 for (int i = 0; i < (a).size(); i++) \
		cin >> a[i].first;
#define vpin2(a)                      \
 for (int i = 0; i < (a).size(); i++) \
		cin >> a[i].first >> a[i].second;
#define vpout(a)                                    \
 for (int i = 0; i < a.size(); i++)                 \
		cout << a[i].first << ' ' << a[i].second << endl; \
 cout << endl;
#define cout(x) cout << setprecision(20) << x << endl
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).begin(), (x).end(), greater<int>()
#define r(x)         \
 {                   \
		cout << x << endl; \
		return;            \
 }
#define sz(x) ((int)(x).size())
#define trav(a, x) for (auto &a : x)


#define loop(a, b, i) for (int i = a; i < b; i++)
#define rloop(a, b, i) for (int i = a; i >= b; i--)
#define pyes cout << "YES" << endl;
#define pno cout << "NO" << endl;
#define line cout << endl;
#define vi vector<ll>
#define vvi vector<vi>
#define pll pair<ll, ll>
#define vp vector<pll>
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define ff first
#define ss second
#define lb lower_bound
#define ub upper_bound

#ifdef ONLINE_JUDGE
#define debug(x) 
#else
#define debug(x) cerr << #x <<" "; _print(x); cerr << endl;
#endif

void _print(ll t) {cerr << t;}
void _print(string t) {cerr << t;}
void _print(char t) {cerr << t;}
void _print(lld t) {cerr << t;}
void _print(double t) {cerr << t;}
void _print(ull t) {cerr << t;}
template <class T, class V> void _print(pair <T, V> p);
template <class T> void _print(vector <T> v);
template <class T> void _print(set <T> v);
template <class T> void _print(multiset <T> v);
template <class T, class V> void _print(pair <T, V> p) {cerr << "{"; _print(p.ff); cerr << ","; _print(p.ss); cerr << "}";}
template <class T> void _print(vector <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T> void _print(set <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T> void _print(multiset <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void _print(map <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void _print(vector<pair<T, V> >v) {cerr << "[ "; for (auto p : v) { _print(p); cerr << " ";}cerr << "]";}
template <class T> void _print(priority_queue<T, vector<T>, greater<T> > pq){vector<T> v;while (!pq.empty()) {v.push_back(pq.top());pq.pop();}_print(v);}
template <class T> void _print(priority_queue<T> pq) {vector<T> v;while (!pq.empty()) {v.push_back(pq.top());pq.pop();}_print(v);}
template <class T> void _print(stack<T> s) {vector<T> v;while (!s.empty()) {v.push_back(s.top());s.pop();}_print(v);}
template <class T> void _print(queue<T> q) {vector<T> v;while (!q.empty()) {v.push_back(q.front());q.pop();}_print(v);}
template <class T> void _print(deque<T> q) {vector<T> v;while (!q.empty()) {v.push_back(q.front());q.pop_front();}_print(v);}
template <class T> void _print(list<T> l) {vector<T> v;for (auto x : l) {v.push_back(x);}_print(v);}
template <class T> void _print(forward_list<T> l) {vector<T> v;for (auto x : l) {v.push_back(x);}_print(v);}
template <class T> void _print(T a) {cerr << a;}

const int M = 1e9 + 7;
const int N = 1e5 + 10;

ll power(ll x, ll y){ ll res = 1; while (y > 0){ if (y & 1) res = (ll)(res*x); y = y>>1; x = (ll)(x*x); } return res; }
vp countArr(vi &arr, ll n){ vp v1; loop(0,n,i){ ll cnt = 1; while(i < n-1 && arr[i] == arr[i+1]){ cnt++, i++; } v1.pb(mp(arr[i], cnt)); } if((n > 1 && arr[n-1] != arr[n-2]) || n == 1) v1.pb(mp(arr[n-1], 1)); return v1;}
ll gcd(ll a, ll b){if(b == 0) return a; return gcd(b, a%b);}
ll lcm(ll a, ll b){return a*b/gcd(a,b);}
vi factors(ll n){ vi fac; for (ll i = 1; i * i <= n; i++){ if (n % i == 0){ fac.pb(i); if (i * i != n)fac.pb(n / i); } } return fac; }
ll maxPow2(ll n){n |= n >> 1; n |= n >> 2; n |= n >> 4; n |= n >> 8; n |= n >> 16; return (n + 1);}
vp primeFactors(ll n){ vp v; for (ll j = 2; j <= sqrtl(n); j++){ ll cnt = 0; while(n%j == 0) n /= j, cnt++; if(cnt)v.pb(mp(j,cnt)); } if(n!=1) v.pb(mp(n,1)); return v;}


void precalc()
{
}


void resolve(ll tc) {
    int n;
    cin>>n;
    int count2=0;
    int count3=0;
    int sum=0;
    while(n!=0){
        if(n%10==2)count2++;
        if(n%10==3)count3++;
        sum+=n%10;
        n/=10;
    }
    debug(count2);
    debug(count3);
    debug(sum);
    loop(0,min(10ll,count2+1),i){
        loop(0,min(10ll,count3+1),j){
            if((sum+2*i+6*j)%9==0){
                pyes;
                return;
            }
        }
    }
    pno;
}
int32_t main()
 {
		ios_base::sync_with_stdio(false);
		cin.tie(0);
		cout.tie(0);
		precalc();
		int t;
		cin >> t;
		while (t--)
			resolve(0);
		return 0;
}

Submission (verdict: Wrong answer on test 1):
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

void solve() {
    int num;
    cin >> num;
    
    vector<int> s;
    int sm = 0, twos = 0, threes = 0;

    while (num > 0) {
        int digit = num % 10;
        s.push_back(digit);
        sm += digit;
        if (digit == 2) {
            ++twos;
        } else if (digit == 3) {
            ++threes;
        }
        num /= 10;
    }

    for (int i = 0; i <= min(10, twos); ++i) {
        for (int j = 0; j <= min(10, threes); ++j) {
            if ((sm + i * 2 + j * 6) % 9 == 0) {
                cout << "YES" << endl;
                return;
            }
        }
    }

    cout << "NO" << endl;
}

int main() {
    int t;
    cin >> t;
    
    for (int i = 0; i < t; ++i) {
        solve();
    }

    return 0;
}