/in/foo.cc: In function 'int main()':
/in/foo.cc:11:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    for (j = 1; j <= n; j++)
    ^~~
/in/foo.cc:14:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
     if (n == 1) {
     ^~
/in/foo.cc:6:12: warning: unused variable 'k' [-Wunused-variable]
  int i, j, k, m, t;
            ^
/in/foo.cc:6:15: warning: unused variable 'm' [-Wunused-variable]
  int i, j, k, m, t;
               ^