/in/foo.cc: In function 'int main()':
/in/foo.cc:18:34: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   f[i][j]=max(f[i][j-1],f[i+(1<<j-1)][j-1]);
                                 ~^~
/in/foo.cc:19:34: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   z[i][j]=min(z[i][j-1],z[i+(1<<j-1)][j-1]);
                                 ~^~