Submission #770166

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
770166	2023-06-30 21:32:33	PurpleCrayon	Constellation 3 (JOI20_constellation3)	C++17	35 / 100	1586 ms	28352 KiB

constellation3

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#include <bits/stdc++.h>
using namespace std;
#define sz(v) int(v.size())
#define ar array
typedef long long ll;
const int N = 2e5+10, MOD = 998244353;
int n, m, a[N], bro[N];
int par[N];
vector<int> child[N];
vector<pair<int, ll>> can[N];
ll dp[N];
void build_tree() {
    memset(par, -1, sizeof(par));
    vector<int> st;
    for (int i = 0; i < n; i++) {
        int last = -1;
        while (sz(st) && a[st.back()] < a[i]) {
            last = st.back();
            st.pop_back();
        }
        if (sz(st)) par[i] = st.back();
        if (last != -1) par[last] = i;
        st.push_back(i);
    }
}
 
 
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• Subtask 1: 14 / 14
• Subtask 2: 21 / 21
• Subtask 3: 0 / 65