Runtime Error
/in/foo.cc: In function 'int main()':
/in/foo.cc:64:40: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
zxf(i,i,1,n) lg[i]=lg[i-1]+(1<<lg[i-1]+1==i);
~~~~~~~^~
/in/foo.cc: In function 'int main()':
/in/foo.cc:64:40: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
zxf(i,i,1,n) lg[i]=lg[i-1]+(1<<lg[i-1]+1==i);
~~~~~~~^~
