main.adb:18:04: warning: analyzing unreferenced function "Is_Unvisited_Land"
main.adb:62:07: warning: initialization of "Visited_Cell" has no effect[#0]
main.adb:70:20: warning: unused assignment[#1]
main.adb:71:23: warning: unused assignment[#2]
main.adb:73:20: warning: unused assignment[#3]
main.adb:74:20: warning: unused assignment[#4]
main.adb:75:20: warning: unused assignment[#5]
main.adb:76:20: warning: unused assignment[#6]
