# verification-helper: PROBLEM https://atcoder.jp/contests/abc296/tasks/abc296_e
import cplib/graph/graph
import cplib/graph/SCC
import sequtils, math
proc scanf(formatstr: cstring){.header: "<stdio.h>", varargs.}
proc ii(): int {.inline.} = scanf("%lld\n", addr result)
var N = ii()
var A = newseqwith(N, ii())
var G = initUnWeightedDirectedGraph(N)
var ans = 0
for i in 0..<N:
G.add_edge(i, A[i]-1)
if i == A[i]-1:
ans += 1
var group = G.SCC()
echo group.mapit(len(it)).filterIt(it >= 2).sum()+ans
Traceback (most recent call last):
File "/home/runner/.local/lib/python3.12/site-packages/onlinejudge_verify/documentation/build.py", line 71, in _render_source_code_stat
bundled_code = language.bundle(stat.path, basedir=basedir, options={'include_paths': [basedir]}).decode()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/runner/.local/lib/python3.12/site-packages/onlinejudge_verify/languages/nim.py", line 86, in bundle
raise NotImplementedError
NotImplementedError
verify/graph/dynamic/SCC_test_.nim
cplib/graph/graph.nim