foo.cc: In function 'int main()':
foo.cc:28:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for (int i=1;i<=m;i++)
  ^~~
foo.cc:30:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   if (s==t)
   ^~
foo.cc:25:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&l);
  ~~~~~^~~~~~~~~
foo.cc:26:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&s,&t,&m);
  ~~~~~^~~~~~~~~~~~~~~~~~~
foo.cc:29:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&locate[i]);
   ~~~~~^~~~~~~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务