Submission #222715

#	Time	Username	Problem	Language	Result	Execution time	Memory
222715		shart23	Strange Device (APIO19_strange_device)	Pypy 2	0 / 100	28 ms	4960 KiB

strange_device

n, a, b = map(int, input().split())
k = a * b
seg = []
for i in range(n):
    l, r = map(int, input().split())
    if r - l + 1 >= k:
        seg.append([0, k - 1])
        continue
    l1 = l % k
    r1 = r % k
    if r1 < l1:
        seg.append([0, r1])
        seg.append([l1, k - 1])
    else:
        seg.append([l1, r1])
seg.sort()
mxr, res = -1, 0
for x in seg:
    res += max(0, x[1] - max(mxr, x[0] - 1))
    mxr = x[1]
print res

• Subtask 1: 0 / 10
• Subtask 2: 0 / 5
• Subtask 3: 0 / 5
• Subtask 4: 0 / 5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 30