Submission #1536300

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Source Code Expand

import sequtils,strutils
var
    N,M : int
    A,B : int
(N,M) = stdin.readline.split.map(parseInt)
var
    hyou = newSeqWith(N + 1, newSeq[int](0))
    flag : array[1..50, bool]
    que : array[1000,int]
    p,p2 : int
for m in 1..M:
    (A,B) = stdin.readline.split.map(parseInt)
    hyou[B].add(A)
que[0] = 1
p = 1
flag[1] = true
while p > p2:
    for k in hyou[que[p2]]:
        if flag[k]:
            continue
        que[p] = k
        p += 1
        flag[k] = true
    p2 += 1
var cnt : int
for i in 1..N:
    if flag[i]:
        cnt += 1
echo cnt

Submission Info

Compile Error

Hint: system [Processing]
Hint: Main [Processing]
Hint: sequtils [Processing]
Hint: strutils [Processing]
Hint: parseutils [Processing]
Hint:  [Link]
Hint: operation successful (12956 lines compiled; 1.869 sec total; 14.143MB; Release Build) [SuccessX]

Judge Result