/in/foo.cc: In function 'int main()':
/in/foo.cc:10:7: warning: variable 'b' set but not used [-Wunused-but-set-variable]
   10 |   int b[10000]={};
      |       ^
/in/foo.cc:5:12: warning: unused variable 's' [-Wunused-variable]
    5 |  int N,t,m,s;
      |            ^