/in/foo.c: In function 'main':
/in/foo.c:7:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(k%2==0)
  ^~
/in/foo.c:10:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   s=s*2+n-2-m;
   ^