Language: C

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.NoSuchElementException;
import java.util.PriorityQueue;

public class Main {
    public static void main(String[] args) {
        FastScanner sc = new FastScanner();
        long sum = 0;
        int n = sc.nextInt();
        for (int i = 1; i <=n; i++) {
            if(i % 3 != 0 && i % 5 != 0){
                sum += i;
            }
        }
        System.out.println(sum);
    }


    private static class FastScanner {
        private final InputStream in = System.in;
        private final byte[] buffer = new byte[1024];
        private int ptr = 0;
        private int buflen = 0;

        private boolean hasNextByte() {
            if (ptr < buflen) {
                return true;
            } else {
                ptr = 0;
                try {
                    buflen = in.read(buffer);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                if (buflen <= 0) {
                    return false;
                }
            }
            return true;
        }

        private int readByte() {
            if (hasNextByte())
                return buffer[ptr++];
            else
                return -1;
        }

        private static boolean isPrintableChar(int c) {
            return 33 <= c && c <= 126;
        }

        public boolean hasNext() {
            while (hasNextByte() && !isPrintableChar(buffer[ptr]))
                ptr++;
            return hasNextByte();
        }

        public String next() {
            if (!hasNext())
                throw new NoSuchElementException();
            StringBuilder sb = new StringBuilder();
            int b = readByte();
            while (isPrintableChar(b)) {
                sb.appendCodePoint(b);
                b = readByte();
            }
            return sb.toString();
        }

        public long nextLong() {
            if (!hasNext())
                throw new NoSuchElementException();
            long n = 0;
            boolean minus = false;
            int b = readByte();
            if (b == '-') {
                minus = true;
                b = readByte();
            }
            if (b < '0' || '9' < b) {
                throw new NumberFormatException();
            }
            while (true) {
                if ('0' <= b && b <= '9') {
                    n *= 10;
                    n += b - '0';
                } else if (b == -1 || !isPrintableChar(b)) {
                    return minus ? -n : n;
                } else {
                    throw new NumberFormatException();
                }
                b = readByte();
            }
        }

        public int nextInt() {
            long nl = nextLong();
            if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE)
                throw new NumberFormatException();
            return (int) nl;
        }

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

}


Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import java.io.IOException;
      | ^~~~~~
main.c:1:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    1 | import java.io.IOException;
      |            ^
main.c:2:1: error: unknown type name 'import'
    2 | import java.io.InputStream;
      | ^~~~~~
main.c:2:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    2 | import java.io.InputStream;
      |            ^
main.c:3:1: error: unknown type name 'import'
    3 | import java.util.ArrayList;
      | ^~~~~~
main.c:3:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    3 | import java.util.ArrayList;
      |            ^
main.c:4:1: error: unknown type name 'import'
    4 | import java.util.Arrays;
      | ^~~~~~
main.c:4:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    4 | import java.util.Arrays;
      |            ^
main.c:5:1: error: unknown type name 'import'
    5 | import java.util.Collections;
      | ^~~~~~
main.c:5:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    5 | import java.util.Collections;
      |            ^
main.c:6:1: error: unknown type name 'import'
    6 | import java.util.HashMap;
      | ^~~~~~
main.c:6:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    6 | import java.util.HashMap;
      |            ^
main.c:7:1: error: unknown type name 'import'
    7 | import java.util.NoSuchElementException;
      | ^~~~~~
main.c:7:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    7 | import java.util.NoSuchElementException;
      |            ^
main.c:8:1: error: unknown type name 'import'
    8 | import java.util.PriorityQueue;
      | ^~~~~~
main.c:8:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    8 | import java.util.PriorityQueue;
      |            ^
main.c:10:1: error: unknown type name 'public'
   10 | public class Main {
      | ^~~~~~
main.c:10:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'Main'
   10 | public class Main {
      |              ^~~~