제출 #1127964

#제출 시각아이디문제언어결과실행 시간메모리
1127964andrewp늑대인간 (IOI18_werewolf)C++20
0 / 100
115 ms9912 KiB
//Dedicated to my love,ivaziva #include <bits/stdc++.h> #include "werewolf.h" #define L(i, j, k) for(int i = (j); i <= (k); ++i) #define R(i, j, k) for(int i = (j); i >= (k); --i) #define ll long long #define sz(a) ((int) (a).size()) #define pb emplace_back #define me(a, x) memset(a, x, sizeof(a)) #define vi vector<int> #define i128 __int128 using namespace std; int n, m, q; vi g[3000]; struct DSU { vector<int> p, sz; void init(int n) { p.resize(n), sz.resize(n); L(i, 0, n - 1) { p[i] = i; sz[i] = 1; } } int get(int x) { return x == p[x] ? x : p[x] = get(p[x]); } void join(int u, int v) { u = get(u), v = get(v); if(u == v) return; if(sz[u] < sz[v]) swap(u, v); sz[u] += sz[v]; p[v] = u; } }; vi check_validity(int N, vi X, vi Y, vi S, vi E, vi L_, vi R_) { n = N, m = sz(X), q = sz(S); L(i, 0, m - 1) { g[X[i]].pb(Y[i]); g[Y[i]].pb(X[i]); } vi ans(q, 0); if(n <= 3000 && m <= 6000 && q <= 3000) { DSU dsu; L(i, 0, q - 1) { int s = S[i], e = E[i], l = L_[i], r = R_[i]; dsu.init(n); L(x, 0, n - 1) { for(auto u : g[x]) { if(u >= l && x >= l) { dsu.join(x, u); } } } L(x, 0, n - 1) { for(auto u : g[x]) { if(u <= r && x <= r) { dsu.join(x, u); } } } ans[i] = (dsu.get(s) == dsu.get(e)); } } return ans; } // int main() { // ios :: sync_with_stdio(false); // cin.tie(0); cout.tie(0); // int N, M, Q; // cin >> N >> M >> Q; // vi X(M), Y(M), S(Q), E(Q), L_(Q), R_(Q); // L(i, 0, M - 1) { // cin >> X[i] >> Y[i]; // } // L(i, 0, Q - 1) { // cin >> S[i] >> E[i] >> L_[i] >> R_[i]; // } // vi ans = check_validity(N, X, Y, S, E, L_, R_); // L(i, 0, Q - 1) { // cout << ans[i] << ' '; // } // cout << '\n'; // return 0; // }
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