View Compilation Error

0_0_36128930_12316.cpp:138:15: error: redefinition of 'long long int F [51]'
 long long F[51] = {0};
               ^
0_0_36128930_12316.cpp:35:11: note: 'long long int F [51]' previously defined here
 long long F[51] = {0};
           ^
0_0_36128930_12316.cpp: In function 'void Fab(int)':
0_0_36128930_12316.cpp:140:6: error: redefinition of 'void Fab(int)'
 void Fab(int len){
      ^
0_0_36128930_12316.cpp:37:6: note: 'void Fab(int)' previously defined here
 void Fab(int len){
      ^
0_0_36128930_12316.cpp: In function 'int main()':
0_0_36128930_12316.cpp:149:5: error: redefinition of 'int main()'
 int main(){
     ^
0_0_36128930_12316.cpp:46:5: note: 'int main()' previously defined here
 int main(){
     ^