General properties of the task:

• restriction for optimizable process — permissible time of executing the operations chain;
• temporarily unavailable resources — absent.

     Given:

• number of operations in the chain, for each of them are given:
  • operation name;
  • number of its realization options, for each of them are given:
    • essence of an operation realization option;
    • operation run-time;
    • its execution cost;
• up to ten possible thresholds of restricting time of chain execution.

     Minimized quality criterion: cost of executing the operations chain under given restriction on its execution time.