2 
2 0 270 5 
S 
T 180 
S 
S 
S 
1 -1 0 8 
S 
S 
T 90 
S 
T 270 
S 
T 90 
S 
			2
There are 2 moving robots. The first robot has initial position (2, 0), direction 270 and a 
sequence of 5 commands. The second one has initial position (1, -1), direction 0 and a 
sequence of 8 commands. The minimum total number of commands to be removed that 
makes robots share final position is 2: for example, remove the 3-rd command of the 
first robot and the 5-th command of the second robot. The common final position in 
that case is (2, 1).