/in/foo.cc: In function 'int IN()':
/in/foo.cc:26:2: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
  while (!isdigit(c=getchar()));x=c-'0';
  ^~~~~
/in/foo.cc:26:32: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
  while (!isdigit(c=getchar()));x=c-'0';
                                ^
/in/foo.cc:27:2: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
  while (isdigit(c=getchar())) x=(x<<1)+(x<<3)+c-'0';return x;
  ^~~~~
/in/foo.cc:27:53: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
  while (isdigit(c=getchar())) x=(x<<1)+(x<<3)+c-'0';return x;
                                                     ^~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:6:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define Mid (L+R>>1)
              ~^~
/in/foo.cc:92:25: note: in expansion of macro 'Mid'
  while (L<=R) if (Check(Mid)) res=Mid,R=Mid-1;else L=Mid+1;
                         ^~~
/in/foo.cc:6:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define Mid (L+R>>1)
              ~^~
/in/foo.cc:92:35: note: in expansion of macro 'Mid'
  while (L<=R) if (Check(Mid)) res=Mid,R=Mid-1;else L=Mid+1;
                                   ^~~
/in/foo.cc:6:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define Mid (L+R>>1)
              ~^~
/in/foo.cc:92:41: note: in expansion of macro 'Mid'
  while (L<=R) if (Check(Mid)) res=Mid,R=Mid-1;else L=Mid+1;
                                         ^~~
/in/foo.cc:6:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 #define Mid (L+R>>1)
              ~^~
/in/foo.cc:92:54: note: in expansion of macro 'Mid'
  while (L<=R) if (Check(Mid)) res=Mid,R=Mid-1;else L=Mid+1;
                                                      ^~~