This documentation is automatically generated by online-judge-tools/verification-helper
# verification-helper: PROBLEM https://atcoder.jp/contests/abc245/tasks/abc245_f
import cplib/graph/graph
import cplib/graph/topologicalsort
proc scanf(formatstr: cstring){.header: "<stdio.h>", varargs.}
proc ii(): int {.inline.} = scanf("%lld\n", addr result)
var N, M = ii()
var G = initUnWeightedDirectedStaticGraph(N)
for i in 0..<M:
var U, V = ii()-1
G.add_edge(V, U)
G.build()
echo N-len(G.topologicalsort())
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