#include <bits/stdc++.h> using namespace std; const int MAXN = 200005; int n, p[MAXN], vis[MAXN], dist[MAXN]; vector<int> g[MAXN]; int32_t main() { ios_base::sync_with_stdio(0); cin >> n; for (int i = 1; i <= n; i++) { cin >> p[i]; } for (int i = 1; i <= n; i++) { for (int j = 1; j <= n; j++) { if (i == j) continue; // Jak liny sie przecinaja to jest krawędź. if ((i < j) ^ (p[i] < p[j])) { // cerr << i << " " << j << "\n"; g[i].push_back(j); g[j].push_back(i); } } } for (int i = 1; i <= n; i++) { queue<int> q; q.push(i); vis[i] = i; while (!q.empty()) { int v = q.front(); while (!q.empty()) { int v = q.front(); q.pop(); for (auto u : g[v]) { if (vis[u] != i) { dist[u] = dist[v] + 1; vis[u] = i; q.push(u); } } } } long long res = 0; for (int j = 1; j <= n; j++) { res += dist[j]; dist[j] = 0; } // cout << "\n"; cout << res << " "; } cout << "\n"; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | #include <bits/stdc++.h> using namespace std; const int MAXN = 200005; int n, p[MAXN], vis[MAXN], dist[MAXN]; vector<int> g[MAXN]; int32_t main() { ios_base::sync_with_stdio(0); cin >> n; for (int i = 1; i <= n; i++) { cin >> p[i]; } for (int i = 1; i <= n; i++) { for (int j = 1; j <= n; j++) { if (i == j) continue; // Jak liny sie przecinaja to jest krawędź. if ((i < j) ^ (p[i] < p[j])) { // cerr << i << " " << j << "\n"; g[i].push_back(j); g[j].push_back(i); } } } for (int i = 1; i <= n; i++) { queue<int> q; q.push(i); vis[i] = i; while (!q.empty()) { int v = q.front(); while (!q.empty()) { int v = q.front(); q.pop(); for (auto u : g[v]) { if (vis[u] != i) { dist[u] = dist[v] + 1; vis[u] = i; q.push(u); } } } } long long res = 0; for (int j = 1; j <= n; j++) { res += dist[j]; dist[j] = 0; } // cout << "\n"; cout << res << " "; } cout << "\n"; } |