제출 #1168523

#제출 시각아이디문제언어결과실행 시간메모리
1168523chikien2009Bitaro’s Party (JOI18_bitaro)C++20
14 / 100
2092 ms6472 KiB
#include <bits/stdc++.h> using namespace std; inline void setup() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); } int n, m, q, y, t, a, b, f[100000]; vector<int> g[100000]; bool banned[100000]; int main() { setup(); cin >> n >> m >> q; for (int i = 0; i < m; ++i) { cin >> a >> b; if (a < b) { swap(a, b); } g[a - 1].push_back(b - 1); } while (q--) { cin >> t >> y; fill_n(f, n, -1); fill_n(banned, n, 0); a = -1; t--; while (y--) { cin >> b; banned[b - 1] = true; } f[t] = 0; for (int i = t; i >= 0; --i) { if (f[i] != -1) { if (!banned[i]) { a = max(a, f[i]); } for (auto & j : g[i]) { f[j] = max(f[j], f[i] + 1); } } } cout << a << "\n"; } return 0; }
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