View Compilation Error

0_0_15234104_18920\Main.java:1: 错误: 需要class, interface或enum
f[0]=0;
^
0_0_15234104_18920\Main.java:2: 错误: 需要class, interface或enum
for(int i=1; i<=400002; i++) 
^
0_0_15234104_18920\Main.java:2: 错误: 需要class, interface或enum
for(int i=1; i<=400002; i++) 
             ^
0_0_15234104_18920\Main.java:2: 错误: 需要class, interface或enum
for(int i=1; i<=400002; i++) 
                        ^
0_0_15234104_18920\Main.java:4: 错误: 需要class, interface或enum
double logC(int m,int n)
^
0_0_15234104_18920\Main.java:7: 错误: 需要class, interface或enum
}
^
6 个错误