/in/foo.cc: In function 'void Search2(int, int, int*, bool)':
/in/foo.cc:24:43: warning: unused variable 'j' [-Wunused-variable]
   24 |         int c = (a[0] + a[1] + u) % n, i, j;
      |                                           ^
/in/foo.cc: In function 'void Search(int, bool)':
/in/foo.cc:89:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   89 |         for (i = 0; i < n - 1; i++)
      |         ^~~
/in/foo.cc:90:36: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   90 |             cout << num[i] << ' '; cout << num[i];
      |                                    ^~~~