/in/foo.cc: In function 'void solve()':
/in/foo.cc:93:8: warning: unused variable 'j22' [-Wunused-variable]
    int j22=j2+2;
        ^~~
/in/foo.cc:96:8: warning: unused variable 'j1' [-Wunused-variable]
    int j1=j0<<2;
        ^~
/in/foo.cc:211:24: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  printf("%I64d\n",ans*2);
                        ^