제출 #340143

#제출 시각아이디문제언어결과실행 시간메모리
3401438e7Editor (BOI15_edi)C++14
100 / 100
187 ms29036 KiB
//Challenge: Accepted #include <iostream> #include <algorithm> #define maxn 300005 using namespace std; int anc[19][maxn], lev[maxn], a[maxn]; inline int getpar(int x, int hei) { if (lev[x] <= hei) return x; for (int i = 18;i >= 0;i--) { if (lev[anc[i][x]] > hei) x = anc[i][x]; } return anc[0][x]; } int main() { ios_base::sync_with_stdio(0);cin.tie(0); int n; cin >> n; for (int i = 1;i <= n;i++) { int x; cin >> x; if (x < 0) { lev[i] = -x; int z = getpar(i - 1, lev[i] - 1); anc[0][i] = getpar(z - 1, lev[i] - 1); for (int j = 1;j < 19;j++) anc[j][i] = anc[j - 1][anc[j - 1][i]]; } else { a[i] = x; } cout << a[getpar(i, 0)] << "\n"; } }
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