foo.cc: In function 'void RMQ_ST()':
foo.cc:39:38: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   39 |    st[i][j]=max(st[i][j-1],st[i+(1<<j-1)][j-1]);
      |                                     ~^~
foo.cc: In function 'int main()':
foo.cc:52:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   52 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
foo.cc:55:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   55 |   scanf("%d",a+i);
      |   ~~~~~^~~~~~~~~~
foo.cc:58:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   58 |  scanf("%d",&m);
      |  ~~~~~^~~~~~~~~
foo.cc:61:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   61 |   scanf("%d %d",&l,&r);
      |   ~~~~~^~~~~~~~~~~~~~~

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