Buggy python submission (verdict: Time Limit Exceeded):
def main():
    N, K = list(map(int, input().split()))
    field = list(map(int, input().split()))

    dpList = [0] * N
    dpList[1] = abs(field[0] - field[1])

    for i in range(2, N):
        tmpList = []
        minCost = -1

        for j in range(max(0, i-K), i):
            cost = dpList[j] + abs(field[i] - field[j])

            if(minCost == -1):
                minCost = cost
            elif minCost > cost:
                minCost = cost

        dpList[i] = minCost

    print(dpList[-1])

if __name__ == "__main__":
    main()

Fixed submission:
def main():
    N, K = list(map(int, input().split()))
    field = list(map(int, input().split()))

    dpList = [0] * N
    dpList[1] = abs(field[0] - field[1])

    for i in range(2, N):
        tmpList = []
        minCost = -1

        minS = max(0, i - K)

        for dpJ, fJ in zip(dpList[minS:i], field[minS:i]):
            cost = dpJ + abs(field[i] - fJ)

            if(minCost == -1):
                minCost = cost
            elif minCost > cost:
                minCost = cost

        dpList[i] = minCost

    print(dpList[-1])

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    N, K = list(map(int, input().split()))
    field = list(map(int, input().split()))

    dpList = [0] * N
    dpList[1] = abs(field[0] - field[1])

    for i in range(2, N):
        tmpList = []
        minCost = -1

        minI = max(0, i - K)

        for j in range(minI, i):
            cost = dpList[j] + abs(field[i] - field[j])

            if(minCost == -1):
                minCost = cost
            elif minCost > cost:
                minCost = cost

        dpList[i] = minCost

    print(dpList[-1])

if __name__ == "__main__":
    main()

Fixed submission:
def main():
    N, K = list(map(int, input().split()))
    field = list(map(int, input().split()))

    dpList = [0] * N
    dpList[1] = abs(field[0] - field[1])

    for i in range(2, N):
        tmpList = []
        minCost = -1

        minS = max(0, i - K)

        for dpJ, fJ in zip(dpList[minS:i], field[minS:i]):
            cost = dpJ + abs(field[i] - fJ)

            if(minCost == -1):
                minCost = cost
            elif minCost > cost:
                minCost = cost

        dpList[i] = minCost

    print(dpList[-1])

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    N, K = list(map(int, input().split()))
    field = list(map(int, input().split()))

    dpList = [0] * N
    dpList[1] = abs(field[0] - field[1])

    for i in range(2, N):
        tmpList = []
        minCost = -1

        for j in range(1, min(K, i) + 1):
            cost = dpList[i-j] + abs(field[i] - field[i - j])

            if(minCost == -1):
                minCost = cost
            elif minCost > cost:
                minCost = cost

        dpList[i] = minCost

    print(dpList[-1])

if __name__ == "__main__":
    main()

Fixed submission:
def main():
    N, K = list(map(int, input().split()))
    field = list(map(int, input().split()))

    dpList = [0] * N
    dpList[1] = abs(field[0] - field[1])

    for i in range(2, N):
        tmpList = []
        minCost = -1

        minS = max(0, i - K)

        for dpJ, fJ in zip(dpList[minS:i], field[minS:i]):
            cost = dpJ + abs(field[i] - fJ)

            if(minCost == -1):
                minCost = cost
            elif minCost > cost:
                minCost = cost

        dpList[i] = minCost

    print(dpList[-1])

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    N, K = list(map(int, input().split()))
    field = list(map(int, input().split()))

    dpList = [0] * N
    dpList[1] = abs(field[0] - field[1])

    for i in range(2, N):
        tmpList = []
        minCost = -1

        for j in range(1, min(K, i) + 1):
            cost = dpList[i-j] + abs(field[i] - field[i - j])

            if(minCost == -1):
                minCost = dpList[i - j] + abs(field[i] - field[i - j])
            elif minCost > cost:
                minCost = cost

        dpList[i] = minCost

    print(dpList[-1])

if __name__ == "__main__":
    main()

Fixed submission:
def main():
    N, K = list(map(int, input().split()))
    field = list(map(int, input().split()))

    dpList = [0] * N
    dpList[1] = abs(field[0] - field[1])

    for i in range(2, N):
        tmpList = []
        minCost = -1

        minS = max(0, i - K)

        for dpJ, fJ in zip(dpList[minS:i], field[minS:i]):
            cost = dpJ + abs(field[i] - fJ)

            if(minCost == -1):
                minCost = cost
            elif minCost > cost:
                minCost = cost

        dpList[i] = minCost

    print(dpList[-1])

if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
def main():
    N, K = list(map(int, input().split()))
    field = list(map(int, input().split()))

    dpList = [0] * N
    dpList[1] = abs(field[0] - field[1])

    for i in range(2, N):
        tmpList = []

        for j in range(1, min(K+1, i+1)):
            tmpList = tmpList + [dpList[i - j] + abs(field[i] - field[i - j])]

        dpList[i] = min(tmpList)

    print(dpList[-1])

if __name__ == "__main__":
    main()

Fixed submission:
def main():
    N, K = list(map(int, input().split()))
    field = list(map(int, input().split()))

    dpList = [0] * N
    dpList[1] = abs(field[0] - field[1])

    for i in range(2, N):
        tmpList = []
        minCost = -1

        minS = max(0, i - K)

        for dpJ, fJ in zip(dpList[minS:i], field[minS:i]):
            cost = dpJ + abs(field[i] - fJ)

            if(minCost == -1):
                minCost = cost
            elif minCost > cost:
                minCost = cost

        dpList[i] = minCost

    print(dpList[-1])

if __name__ == "__main__":
    main()