#include #include #include using namespace std; int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int n; cin >> n; vector> g(n); for (int u = 0; u < n; ++u) { int v; while (cin >> v && v != 0) g[u].push_back(v - 1); } vector dfn(n), low(n), comp(n, -1), st; vector in_stack(n); int timer = 0, count = 0; auto dfs = [&](auto &&self, int u) -> void { dfn[u] = low[u] = ++timer; st.push_back(u); in_stack[u] = true; for (int v : g[u]) { if (!dfn[v]) self(self, v), low[u] = min(low[u], low[v]); else if (in_stack[v]) low[u] = min(low[u], dfn[v]); } if (dfn[u] == low[u]) { while (true) { int v = st.back(); st.pop_back(); in_stack[v] = false; comp[v] = count; if (v == u) break; } ++count; } }; for (int v = 0; v < n; ++v) if (!dfn[v]) dfs(dfs, v); if (count == 1) { cout << "1\n0\n"; return 0; } vector indeg(count), outdeg(count); for (int u = 0; u < n; ++u) for (int v : g[u]) if (comp[u] != comp[v]) { ++outdeg[comp[u]]; ++indeg[comp[v]]; } int sources = 0, sinks = 0; for (int c = 0; c < count; ++c) { sources += indeg[c] == 0; sinks += outdeg[c] == 0; } cout << sources << '\n' << max(sources, sinks) << '\n'; }