Submission #1301124


Source Code Expand

n = input()
D = [tuple(map(int, raw_input().split())) for i in xrange(n)]
if (not D[0][0] == D[1][1] == 0 or not D[0][1] == D[1][0] > 0
        or any(i>1 and (d[0] == 0 or d[1] == 0) for i, d in enumerate(D))):
    print -1
    exit(0)
m = {}
for i, d in enumerate(D):
    m[d] = m.get(d, 0) + 1 if i>0 else 0
D.sort()
used = [0]*n

cnt = 0
for x, y in D:
    if (x+1, y+1) in m:
        cnt += m[x+1, y+1]
        m[x+1, y+1] = 0
    if (x+1, y-1) in m:
        cnt += m[x+1, y-1]
        m[x+1, y-1] = 0
ok = 1
for x, y in D:
    if m[x, y] > 0:
        if (x-1, y) not in m or (x, y-1) not in m:
            ok = 0
if ok:
    print 2*n - 2 - cnt
else:
    print -1

Submission Info

Submission Time
Task A - Distance Pairs
User yaketake08
Language Python (2.7.6)
Score 0
Code Size 696 Byte
Status WA
Exec Time 524 ms
Memory 24508 KB

Judge Result

Set Name sample All
Score / Max Score 0 / 0 0 / 1500
Status
AC × 2
AC × 25
WA × 10
Set Name Test Cases
sample sample-01.txt, sample-02.txt
All sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 01-11.txt, 01-12.txt, 01-13.txt, 01-14.txt, 01-15.txt, 01-16.txt, 01-17.txt, 01-18.txt, 01-19.txt, 01-20.txt, 01-21.txt, 01-22.txt, 01-23.txt, 01-24.txt, 01-25.txt, 01-26.txt, 01-27.txt, 01-28.txt, 01-29.txt, 01-30.txt, 01-31.txt, sample-01.txt, sample-02.txt
Case Name Status Exec Time Memory
01-01.txt AC 482 ms 24508 KB
01-02.txt AC 429 ms 11332 KB
01-03.txt AC 10 ms 2696 KB
01-04.txt AC 10 ms 2696 KB
01-05.txt AC 14 ms 2696 KB
01-06.txt WA 245 ms 7724 KB
01-07.txt WA 434 ms 11580 KB
01-08.txt WA 457 ms 11584 KB
01-09.txt WA 466 ms 11452 KB
01-10.txt WA 424 ms 11328 KB
01-11.txt AC 423 ms 12224 KB
01-12.txt AC 407 ms 11868 KB
01-13.txt AC 509 ms 24508 KB
01-14.txt AC 499 ms 24508 KB
01-15.txt AC 500 ms 24508 KB
01-16.txt AC 319 ms 11404 KB
01-17.txt WA 360 ms 11404 KB
01-18.txt AC 365 ms 11404 KB
01-19.txt WA 489 ms 24508 KB
01-20.txt WA 503 ms 19008 KB
01-21.txt WA 524 ms 19516 KB
01-22.txt WA 491 ms 19388 KB
01-23.txt AC 454 ms 13632 KB
01-24.txt AC 471 ms 11584 KB
01-25.txt AC 244 ms 10636 KB
01-26.txt AC 252 ms 10636 KB
01-27.txt AC 238 ms 10636 KB
01-28.txt AC 246 ms 10636 KB
01-29.txt AC 10 ms 2696 KB
01-30.txt AC 10 ms 2696 KB
01-31.txt AC 10 ms 2696 KB
sample-01.txt AC 10 ms 2696 KB
sample-02.txt AC 10 ms 2696 KB