/in/foo.cc: In function 'void build(int, int, int)':
/in/foo.cc:12:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=l+r>>1;
          ~^~
/in/foo.cc: In function 'void change(int, int, int, int, int, int)':
/in/foo.cc:33:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=l+r>>1;
          ~^~
/in/foo.cc: In function 'void query(int, int, int, int, int)':
/in/foo.cc:41:3: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   if (mn[x]<Min) Min=mn[x]; return;
   ^~
/in/foo.cc:41:29: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
   if (mn[x]<Min) Min=mn[x]; return;
                             ^~~~~~
/in/foo.cc:44:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=l+r>>1;
          ~^~