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feat: simplify

This commit is contained in:
Eatswap 2023-03-24 23:53:37 +08:00
parent 8066fae29f
commit bc2e434c78
Signed by: Eatswap
GPG Key ID: BE661106A1F3FA0B
1 changed files with 3 additions and 5 deletions
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6
cpp/2303/230324.cpp
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@ -26,11 +26,9 @@ public:
std::function<int(int)> dfs = [&](int cur) { std::function<int(int)> dfs = [&](int cur) {
vis[cur] = true; vis[cur] = true;
int ret = 0; int ret = 0;
for (int nx : vs[cur]) { for (int nx : vs[cur])
if (vis[std::abs(nx)]) if (!vis[std::abs(nx)])
continue;
ret += (nx < 0) + dfs(std::abs(nx)); ret += (nx < 0) + dfs(std::abs(nx));
}
return ret; return ret;
}; };
return dfs(0); return dfs(0);