/in/foo.cc: In function 'int main()':
/in/foo.cc:123:13: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
     if (flag==j&1) cnt1++;
         ~~~~^~~
/in/foo.cc:132:13: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
     if (flag==j&1) cnt2++;
         ~~~~^~~