/in/foo.cc: In function 'int main()':
/in/foo.cc:8:17: warning: unused variable 'j' [-Wunused-variable]
    8 |         long i, j, k, t, n, m, p, sum=0,sum0=0;
      |                 ^
/in/foo.cc:8:29: warning: unused variable 'm' [-Wunused-variable]
    8 |         long i, j, k, t, n, m, p, sum=0,sum0=0;
      |                             ^