View Compilation Error

0_0_6544439_27810\Main.java:1: illegal character: \35
#include<iostream>
^
0_0_6544439_27810\Main.java:2: illegal character: \35
#include<cmath>
^
0_0_6544439_27810\Main.java:4: class, interface, or enum expected
using namespace std;
^
0_0_6544439_27810\Main.java:5: class, interface, or enum expected
int main()
^
0_0_6544439_27810\Main.java:8: class, interface, or enum expected
    for(i=1;i<=100000;i++)
    ^
0_0_6544439_27810\Main.java:8: class, interface, or enum expected
    for(i=1;i<=100000;i++)
            ^
0_0_6544439_27810\Main.java:8: class, interface, or enum expected
    for(i=1;i<=100000;i++)
                      ^
0_0_6544439_27810\Main.java:11: class, interface, or enum expected
        else a[i]=a[i-1]+i;
        ^
0_0_6544439_27810\Main.java:12: class, interface, or enum expected
    }
    ^
0_0_6544439_27810\Main.java:15: class, interface, or enum expected
    return 0;
    ^
0_0_6544439_27810\Main.java:16: class, interface, or enum expected
}