제출 #563203

#제출 시각아이디문제언어결과실행 시간메모리
563203hoanghq2004던전 (IOI21_dungeons)C++17
26 / 100
557 ms222400 KiB
#include <bits/stdc++.h> #pragma GCC optimize ("O3") #pragma GCC optimize ("unroll-loops") #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> #include "dungeons.h" using namespace __gnu_pbds; using namespace std; template <typename T> using ordered_set = tree <T, null_type, less <T>, rb_tree_tag, tree_order_statistics_node_update>; const int N = 4e5 + 10; int n; int s[N], p[N], w[N], l[N]; int nxt[N][25]; long long dmin[N][25]; long long sum[N][25]; void init(int _n, std::vector<int> S, std::vector<int> P, std::vector<int> W, std::vector<int> L) { n = _n; for (int i = 0; i < n; ++i) s[i] = S[i], p[i] = P[i], w[i] = W[i], l[i] = L[i]; for (int i = 0; i < n; ++i) { nxt[i][0] = w[i]; dmin[i][0] = - s[i]; sum[i][0] = s[i]; } nxt[n][0] = n; for (int lg = 1; lg < 25; ++lg) { for (int i = 0; i <= n; ++i) { nxt[i][lg] = nxt[nxt[i][lg - 1]][lg - 1]; sum[i][lg] = sum[i][lg - 1] + sum[nxt[i][lg - 1]][lg - 1]; dmin[i][lg] = min(dmin[i][lg - 1], dmin[nxt[i][lg - 1]][lg - 1] + sum[i][lg - 1]); } } // assert() } long long simulate(int i, int z) { long long cur = z; while (i != n) { for (int lg = 24; lg >= 0; --lg) { if (nxt[i][lg] == n || dmin[i][lg] + cur < 0) continue; cur += sum[i][lg]; i = nxt[i][lg]; } if (dmin[i][0] + cur < 0) { cur += s[i]; i = l[i]; } else { cur += s[i]; i = nxt[i][0]; assert(i == n); } } return cur; } // //int main() { //// freopen("test.inp", "r", stdin); //// freopen("test.out", "w", stdout); // int n, q; // std::vector<int> s, p, z; // std::vector<int> w, l, x; // std::vector<long long> answer; // // assert(scanf("%d %d", &n, &q) == 2); // s.resize(n); // p.resize(n); // w.resize(n); // l.resize(n); // x.resize(q); // z.resize(q); // answer.resize(q); // // for (int i = 0; i < n; i++) { // assert(scanf("%d", &s[i]) == 1); // } // for (int i = 0; i < n; i++) { // assert(scanf("%d", &p[i]) == 1); // } // for (int i = 0; i < n; i++) { // assert(scanf("%d", &w[i]) == 1); // } // for (int i = 0; i < n; i++) { // assert(scanf("%d", &l[i]) == 1); // } // // // init(n, s, p, w, l); // // for (int i = 0; i < q; i++) { // assert(scanf("%d %d", &x[i], &z[i]) == 2); // answer[i] = simulate(x[i], z[i]); // } // fclose(stdin); // // for (int i = 0; i < q; i++) { // printf("%lld\n", answer[i]); // } // fclose(stdout); // return 0; //}
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