foo.cc: In function ‘void FindMaxs(int*, int)’:
foo.cc:8:9: warning: unused variable ‘maxs’ [-Wunused-variable]
    8 |     int maxs = a[0];
      |         ^~~~
foo.cc: In function ‘int main()’:
foo.cc:31:9: warning: unused variable ‘count’ [-Wunused-variable]
   31 |     int count = 0;
      |         ^~~~~