(VAR X Y )
(RULES 
        plus(0, Y) -> Y
        plus(s(X), Y) -> s(plus(X, Y))
        min(X, 0) -> X
        min(s(X), s(Y)) -> min(X, Y)
        min(min(X, Y), Z) -> min(X, plus(Y, Z))
        quot(0, s(Y)) -> 0
        quot(s(X), s(Y)) -> s(quot(min(X, Y), s(Y)))
        
)