Submission #3768873

Source Code Expand

n, m = map(int,input().split())
f = [False for _ in range(n)]
f[0] = True
for i in range(m):
  x, y = map(int,input().split())
  f[y - 1] = f[y - 1] or f[x - 1]
ans = f.count(True)
print(ans if ans <= 1 else ans - 1)

Submission Info

Submission Time
Task B - Box and Ball
User mikit
Language Python (3.4.3)
Score 0
Code Size 225 Byte
Status WA
Exec Time 304 ms
Memory 3928 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 400
Status
AC × 2
WA × 1
AC × 5
WA × 22
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 WA 17 ms 3060 KB
0_02.txt AC 17 ms 2940 KB
1_00.txt AC 17 ms 2940 KB
1_01.txt AC 17 ms 3060 KB
1_02.txt WA 17 ms 3060 KB
1_03.txt WA 17 ms 2940 KB
1_04.txt AC 289 ms 3928 KB
1_05.txt WA 304 ms 3888 KB
1_06.txt WA 285 ms 3480 KB
1_07.txt WA 301 ms 3504 KB
1_08.txt WA 187 ms 3444 KB
1_09.txt WA 188 ms 3760 KB
1_10.txt WA 70 ms 3632 KB
1_11.txt WA 125 ms 3188 KB
1_12.txt WA 29 ms 3888 KB
1_13.txt WA 251 ms 3608 KB
1_14.txt WA 140 ms 3188 KB
1_15.txt WA 230 ms 3188 KB
1_16.txt WA 24 ms 3632 KB
1_17.txt WA 297 ms 3864 KB
1_18.txt WA 263 ms 3480 KB
1_19.txt WA 300 ms 3444 KB
1_20.txt WA 260 ms 3188 KB
1_21.txt WA 228 ms 3504 KB
1_22.txt WA 294 ms 3608 KB
1_23.txt WA 93 ms 3608 KB