/in/foo.cc: In function 'int main()':
/in/foo.cc:24:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
             if(b[i]%2==1)if(f)break;
               ^
/in/foo.cc:34:29: warning: statement has no effect [-Wunused-value]
                     a[j/2+1]==k+'A';
                             ^