View Compilation Error

0_0_31343090_2142.cpp:31:11: error: redefinition of 'const int maxn'
 const int maxn = int(1e7)+10;
           ^
0_0_31343090_2142.cpp:4:11: note: 'const int maxn' previously defined here
 const int maxn = int(1e7)+10;
           ^
0_0_31343090_2142.cpp:32:11: error: redefinition of 'int a [10000010]'
 int a[maxn],b[maxn];
           ^
0_0_31343090_2142.cpp:5:5: note: 'int a [10000010]' previously declared here
 int a[maxn],b[maxn];
     ^
0_0_31343090_2142.cpp:32:19: error: redefinition of 'int b [10000010]'
 int a[maxn],b[maxn];
                   ^
0_0_31343090_2142.cpp:5:13: note: 'int b [10000010]' previously declared here
 int a[maxn],b[maxn];
             ^
0_0_31343090_2142.cpp: In function 'int main()':
0_0_31343090_2142.cpp:33:5: error: redefinition of 'int main()'
 int main(){
     ^
0_0_31343090_2142.cpp:6:5: note: 'int main()' previously defined here
 int main(){
     ^