View Compilation Error

0_0_17291452_25745.cpp:50:19: error: redefinition of 'double group [45000]'
 double group[45000];
                   ^
0_0_17291452_25745.cpp:4:8: note: 'double group [45000]' previously declared here
 double group[45000];
        ^
0_0_17291452_25745.cpp: In function 'int main()':
0_0_17291452_25745.cpp:52:5: error: redefinition of 'int main()'
 int main()
     ^
0_0_17291452_25745.cpp:6:5: note: 'int main()' previously defined here
 int main()
     ^