Submission #682591

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
682591	2023-01-16 14:51:45	FedShat	Nice sequence (IZhO18_sequence)	C++17	76 / 100	2071 ms	43808 KiB

sequence

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr int INF = numeric_limits<int>::max() / 2;
constexpr ll INFLL = numeric_limits<ll>::max() / 2;
template<class T>
istream &operator>>(istream &is, vector<T> &a) {
    for (auto &i : a) {
        is >> i;
    }
    return is;
}
vector<vector<int>> g; // i -> j means pref[i] > pref[j]
vector<int> used;
bool cycle = 0;
void dfs1(int v) {
    used[v] = 0;
    for (auto u : g[v]) {
        if (used[u] == -1) {
            dfs1(u);
        } else if (used[u] == 0) {
            cycle = 1;
        }
    }
    used[v] = 1;
}
 
 
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