/in/foo.cc: In function 'int main()':
/in/foo.cc:51:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
             if(j%2)
               ^
/in/foo.cc:62:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
             if(j%2)
               ^