제출 #1295799

#제출 시각아이디문제언어결과실행 시간메모리
1295799SabaKharebavaObstacles for a Llama (IOI25_obstacles)C++20
10 / 100
2097 ms22968 KiB
#include<bits/stdc++.h> using namespace std; vector<int> l; void initialize(vector<int> t, vector<int> h) { l.resize(h.size(), -1); auto dfs = [&](auto& dfs, int i, int j, int val, bool c = false) -> void { if (i < 0 || i >= t.size() || j >= h.size() || h[j] >= t[i]) return; if (l[j] == -1) l[j] = val; if (i-1 > 0 && j-1 > 0 && h[j-1] >= t[i-1]) dfs(dfs, i-1, j, val, true); if (!c) dfs(dfs, i+1, j, val); dfs(dfs, i, j+1, val); }; for (int i = 0; i < h.size(); i++) if (l[i] == -1 && t[0] > h[i]) dfs(dfs, 0, i, i); } bool can_reach(int ll, int r, int s, int d) { if (d < s) swap(d, s); return (l[d] <= s); }
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