* @example doc/tuto-msg/masterworker-sol2.c
* @example doc/tuto-msg/masterworker-sol3.c
* @example doc/tuto-msg/masterworker-sol4.c
* @example doc/tuto-msg/masterworker-sol2.c
* @example doc/tuto-msg/masterworker-sol3.c
* @example doc/tuto-msg/masterworker-sol4.c