{
  sstore(0, difficulty())
}
// ----
// Trace:
// Memory dump:
//     20: 9999990900000000000000000000000000000000000000000000000000000000
// Storage dump:
//   0000000000000000000000000000000000000000000000000000000000000000: 9999990900000000000000000000000000000000000000000000000000000000