/in/foo.cc: In function 'int main()':
/in/foo.cc:17:40: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   Sam[i][j]=max(Sam[i][j-1],Sam[i+(1<<j-1)][j-1]);
                                       ~^~
/in/foo.cc:18:40: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   Luo[i][j]=min(Luo[i][j-1],Luo[i+(1<<j-1)][j-1]);
                                       ~^~