Submission #10369525

Source Code Expand

n,m=map(int,input().split())
arr=[list(map(int,input().split())) for _ in range(m)]
count=[1]*(n+1)
s=set()
s.add(1)
for a,b in arr:
  if a in s:
    s.add(b)
    count[b]+=1
    count[a]-=1
  if count[a]==0:
    s.discard(a)
print(len(s))

Submission Info

Submission Time
Task B - Box and Ball
User tanon710
Language Python (3.4.3)
Score 0
Code Size 251 Byte
Status WA
Exec Time 372 ms
Memory 34332 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 400
Status
AC × 3
AC × 9
WA × 18
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt
Case Name Status Exec Time Memory
0_00.txt AC 17 ms 3060 KB
0_01.txt AC 17 ms 3060 KB
0_02.txt AC 17 ms 2940 KB
1_00.txt AC 17 ms 3064 KB
1_01.txt AC 17 ms 3060 KB
1_02.txt AC 17 ms 3060 KB
1_03.txt WA 17 ms 3064 KB
1_04.txt AC 322 ms 24936 KB
1_05.txt AC 372 ms 34332 KB
1_06.txt WA 337 ms 24584 KB
1_07.txt AC 361 ms 30372 KB
1_08.txt WA 227 ms 19052 KB
1_09.txt WA 231 ms 20680 KB
1_10.txt WA 76 ms 8532 KB
1_11.txt WA 147 ms 12964 KB
1_12.txt WA 26 ms 4332 KB
1_13.txt WA 293 ms 24932 KB
1_14.txt WA 167 ms 14624 KB
1_15.txt WA 288 ms 23008 KB
1_16.txt WA 22 ms 3700 KB
1_17.txt WA 355 ms 28720 KB
1_18.txt WA 321 ms 26392 KB
1_19.txt WA 353 ms 28584 KB
1_20.txt WA 346 ms 26552 KB
1_21.txt WA 273 ms 23480 KB
1_22.txt WA 352 ms 28924 KB
1_23.txt WA 96 ms 10188 KB