CLS

INPUT tmp$

FOR i = 1 TO LEN(tmp$)

        IF MID$(tmp$, i, 1) = " " THEN

                n = VAL(LEFT$(tmp$, i - 1))

                p = VAL(RIGHT$(tmp$, LEN(tmp$) - i))

        END IF

NEXT i

DIM a(n - 1)

FOR i = 1 TO n - 1

        a(i) = 0

NEXT i

FOR i = 1 TO p

        INPUT tmp$

        tmp$ = tmp$ + " "

        start = 0

        finish = 0

        j = 1

        quit = 0

        WHILE quit = 0

                IF j = LEN(tmp$) THEN

                        quit = 1

                END IF

                IF MID$(tmp$, j, 1) = " " THEN

                        IF start = 0 THEN

                                start = VAL(LEFT$(tmp$, j - 1))

                        ELSE

                                finish = VAL(LEFT$(tmp$, j - 1))

                        END IF

                        tmp$ = RIGHT$(tmp$, LEN(tmp$) - j)

                        j = 1

                END IF

                j = j + 1

        WEND

        FOR j = start TO finish - 1

                a(j) = a(j) + 1

        NEXT j

NEXT i

FOR i = 1 TO n - 1

        IF a(i) < p THEN

                p = a(i)

        END IF

NEXT i

FOR i = 1 TO n - 1

        IF a(i) = p THEN

                PRINT i, "-", i + 1

        END IF

NEXT i