/in/foo.cc: In function 'int main()':
/in/foo.cc:11:35: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
    f[i][j]=max(f[i][j-1],f[i+(1<<j-1)][j-1]);
                                  ~^~
/in/foo.cc:2:21: note: in definition of macro 'max'
 #define max(x,y) (x>y?x:y)
                     ^
/in/foo.cc:11:35: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
    f[i][j]=max(f[i][j-1],f[i+(1<<j-1)][j-1]);
                                  ~^~
/in/foo.cc:2:25: note: in definition of macro 'max'
 #define max(x,y) (x>y?x:y)
                         ^