제출 #255165

#제출 시각아이디문제언어결과실행 시간메모리
255165Saboonpopa (BOI18_popa)C++14
0 / 100
20 ms384 KiB
#include <bits/stdc++.h> #include <popa.h> using namespace std; typedef long long ll; const int maxn = 1000 + 10; int l[maxn], r[maxn]; int solve(int n, int* Left, int* Right){ stack<int> s; memset(l, -1, sizeof l); memset(r, -1, sizeof r); for (int i = 0; i < n; i++){ while (!s.empty()){ int k = s.top(); if (query(k, i, i, i) == 1){ r[k] = i; s.pop(); continue; } l[i] = k; break; } s.push(i); } int root = 0; for (int i = 0; i < n; i++) if (l[i] == -1 and r[i] == -1) root = i; for (int i = 0; i < n; i++){ if (i == root) continue; if (l[i] == -1) Left[r[i]] = i; else if (r[i] == -1) Right[l[i]] = i; else{ if (r[l[i]] == r[i]) Right[l[i]] = i; else Left[r[i]] = i; } } return root; }
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