Problem: 2050C - Uninteresting Number
Language: java

Solution 1 (runtime: 311 ms):
import java.io.*;
import java.util.*;

public class UninterestingNumber {
    public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer tokenizer = new StringTokenizer(in.readLine());

        int t = Integer.parseInt(tokenizer.nextToken());
        ArrayList<String> ans = new ArrayList<>();

        for (int i = 0; i < t; i++) {
            tokenizer = new StringTokenizer(in.readLine());
            String n = tokenizer.nextToken();
            int num = simplify(n);

            if (num == 0) {
                ans.add("YES");
                continue;
            }

            int num2 = numTwos(n);
            int num3 = numThrees(n);

            boolean canAdd = false;

            if (num == 1) {
                if (num3 >= 1 && num2 >= 1) {
                    canAdd = true;
                } else if (num2 >= 4) {
                    canAdd = true;
                }
            } else if (num == 2) {
                if (num3 >= 2 && num2 >= 2) {
                    canAdd = true;
                } else if (num3 == 1 && num2 >= 5) {
                    canAdd = true;
                } else if (num2 >= 8) {
                    canAdd = true;
                }
            } else if (num == 3) {
                if (num3 >= 1 || num2 >= 3) {
                    canAdd = true;
                }
            } else if (num == 4) {
                if (num3 >= 2 && num2 >= 1) {
                    canAdd = true;
                } else if (num3 == 1 && num2 >= 4) {
                    canAdd = true;
                } else if (num2 >= 7) {
                    canAdd = true;
                }
            } else if (num == 5) {
                if (num2 >= 2) {
                    canAdd = true;
                }
            } else if (num == 6) {
                if (num3 >= 2) {
                    canAdd = true;
                } else if (num3 == 1 && num2 >= 3) {
                    canAdd = true;
                } else if (num2 >= 6) {
                    canAdd = true;
                }
            } else if (num == 7) {
                if (num2 >= 1) {
                    canAdd = true;
                }
            } else if (num == 8) {
                if (num3 >= 1 && num2 >= 2) {
                    canAdd = true;
                } else if (num2 >= 5) {
                    canAdd = true;
                }
            }

            if (canAdd) {
                ans.add("YES");
                continue;
            }
            ans.add("NO");
        }

        for (String s : ans) {
            System.out.println(s);
        }
    }

    public static int numTwos(String x) {
        int ret = 0;
        for (char a : x.toCharArray()) {
            if ((a - '0') == 2) ret++;
        }
        return ret;
    }

    public static int numThrees(String x) {
        int ret = 0;
        for (char a : x.toCharArray()) {
            if ((a - '0') == 3) ret++;
        }
        return ret;
    }

    public static int simplify(String x) {
        int ret = 0;
        for (char a : x.toCharArray()) {
            ret += (a - '0');
        }
        return ret % 9;
    }
}

Solution 2 (runtime: 249 ms):
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.*;
public class main {
    static PrintWriter pw = new PrintWriter(new BufferedOutputStream(System.out));
    static FastReader in = new FastReader();
    public static int n;  
    public static void main(String[] args) {
        int t = in.nextInt();
        while (t-- > 0) {
            String p = in.next();
            n = p.length();
            long sum = 0;
            for (int i = 0; i < n; i++) {
                int l = p.charAt(i) - '0';
                sum += l;
            }
            if (sum % 9 == 0) {
                pw.println("YES");
            } else {
                sum %= 9;
                sum = 9 - sum;

                int count2 = 0;
                int count3 = 0;
                for (int i = 0; i < n; i++) {
                    int l = p.charAt(i) - '0';
                    if (l == 2) {
                        count2++;
                    } else if (l == 3) {
                        count3++;
                    }
                }
                if (sum % 2 != 0) {
                    sum += 9;
                }
                while(count3 > 0 && sum >= 6) {
                    count3--;
                    sum -= 6;
                }
                while(count2 > 0 && sum >= 2) {
                    count2--;
                    sum -= 2;
                }
                if (sum == 0) {
                    pw.println("YES");
                } else {
                    pw.println("NO");
                }
            }
        }
        pw.close();
    }
    
    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
}