제출 #711597

#제출 시각아이디문제언어결과실행 시간메모리
711597t6twotwo송신탑 (IOI22_towers)C++17
0 / 100
4062 ms1700 KiB
#include "towers.h" #include <bits/stdc++.h> using namespace std; using ll = long long; int N; vector<int> H; void init(int _N, vector<int> _H) { N = _N; H = _H; } int max_towers(int L, int R, int D) { R++; auto dc = [&](auto dc, int l, int r, int lim) -> int { if (l >= r) return 0; int x = l, mn = H[l]; for (int i = l; i < r; i++) { if (H[i] > H[x]) x = i; mn = min(mn, H[i]); } return max(mn + D <= lim ? 1 : 0, (l + 1 == x ? 1 : dc(dc, l, x - 1, H[x] - D)) + (r - 2 == x ? 1 : dc(dc, x + 1, r, H[x] - D))); }; return dc(dc, L, R, numeric_limits<int>::max()); }
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