/in/foo.cc: In function 'int main()':
/in/foo.cc:5:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int i=0;i<=11;i++)cin>>a[i];{
     ^~~
/in/foo.cc:5:37: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
     for(int i=0;i<=11;i++)cin>>a[i];{
                                     ^
/in/foo.cc:4:15: warning: unused variable 'i' [-Wunused-variable]
     int a[12],i,m=0,n=0;
               ^