View Compilation Error

0_0_17159136_21221.cpp:2:4: error: stray '#' in program
 02.#include <cstdio>  
    ^
0_0_17159136_21221.cpp:3:4: error: stray '#' in program
 03.#include <cstring>  
    ^
0_0_17159136_21221.cpp:4:4: error: stray '#' in program
 04.#include <cmath>  
    ^
0_0_17159136_21221.cpp:5:4: error: stray '#' in program
 05.#include <vector>  
    ^
0_0_17159136_21221.cpp:6:4: error: stray '#' in program
 06.#include <iostream>  
    ^
0_0_17159136_21221.cpp:7:4: error: stray '#' in program
 07.#include <algorithm>  
    ^
0_0_17159136_21221.cpp:2:1: error: expected unqualified-id before numeric constant
 02.#include <cstdio>  
 ^
0_0_17159136_21221.cpp:9:1: error: expected unqualified-id before numeric constant
 09.const int maxn=40004;  
 ^
0_0_17159136_21221.cpp:10:1: error: expected unqualified-id before numeric constant
 10.struct node{  
 ^