foo.cpp: In function 'void zl()':
foo.cpp:46:21: error: 'jc' was not declared in this scope
          while (jc(i)==0)
                     ^
foo.cpp: In function 'int main()':
foo.cpp:150:24: warning: unknown conversion type character 'l' in format [-Wformat=]
     printf("%lld\n",ans);    
                        ^
foo.cpp:150:24: warning: too many arguments for format [-Wformat-extra-args]
foo.cpp:136:13: warning: unused variable 'j' [-Wunused-variable]
     int i , j;
             ^