Main.cc: In function 'int main()':
Main.cc:6:8: warning: unused variable 'm' [-Wunused-variable]
int n,m;
^
Main.cc: At global scope:
Main.cc:21:15: error: redefinition of 'int a [10000001]'
int a[10000001];
^
Main.cc:3:5: note: 'int a [10000001]' previously declared here
int a[10000001];
^
Main.cc: In function 'int main()':
Main.cc:22:5: error: redefinition of 'int main()'
int main(){
^
Main.cc:4:5: note: 'int main()' previously defined here
int main(){
^