#include <bits/stdc++.h> using namespace std; typedef long long LL; typedef long double LD; typedef pair<int, int> PII; typedef pair<LL, LL> PLL; #define all(x) (x).begin(), (x).end() #define sz(x) (int)(x).size() template<typename _T> inline void _DBG(const char *s, _T x) { cerr << s << " = " << x << "\n"; } template<typename _T, typename... args> void _DBG(const char *s, _T x, args... a) { while(*s != ',') cerr << *s++; cerr << " = " << x << ','; _DBG(s + 1, a...); } #ifdef LOCAL #define _upgrade ios_base::sync_with_stdio(0); #define DBG(...) _DBG(#__VA_ARGS__, __VA_ARGS__) #else #define _upgrade ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); #define DBG(...) (__VA_ARGS__) #define cerr if(0) cout #endif // ********************** CODE ********************** // const int N = 2e5 + 7; int n, P[N]; vector<int> G[N]; int dist[N]; queue<int> Q; void BFS(int s, LL &ans) { Q.push(s); while (!Q.empty()) { int v = Q.front(); Q.pop(); for (auto u: G[v]) { if (dist[u] == N) { dist[u] = dist[v] + 1; ans += dist[u]; Q.push(u); } } } } int main() { _upgrade cin >> n; set<pair<int, int>> S; for (int i = 1; i <= n; i++) { cin >> P[i]; auto it = S.lower_bound({P[i], 0}); while (it != S.end()) { int j = it->second; G[i].push_back(j); G[j].push_back(i); it++; } S.insert({P[i], i}); } for (int i = 1; i <= n; i++) { for (int j = 1; j <= n; j++) dist[j] = N; dist[i] = 0; LL ans = 0; BFS(i, ans); cout << ans << " "; } cout << "\n"; return 0; }
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 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | #include <bits/stdc++.h> using namespace std; typedef long long LL; typedef long double LD; typedef pair<int, int> PII; typedef pair<LL, LL> PLL; #define all(x) (x).begin(), (x).end() #define sz(x) (int)(x).size() template<typename _T> inline void _DBG(const char *s, _T x) { cerr << s << " = " << x << "\n"; } template<typename _T, typename... args> void _DBG(const char *s, _T x, args... a) { while(*s != ',') cerr << *s++; cerr << " = " << x << ','; _DBG(s + 1, a...); } #ifdef LOCAL #define _upgrade ios_base::sync_with_stdio(0); #define DBG(...) _DBG(#__VA_ARGS__, __VA_ARGS__) #else #define _upgrade ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); #define DBG(...) (__VA_ARGS__) #define cerr if(0) cout #endif // ********************** CODE ********************** // const int N = 2e5 + 7; int n, P[N]; vector<int> G[N]; int dist[N]; queue<int> Q; void BFS(int s, LL &ans) { Q.push(s); while (!Q.empty()) { int v = Q.front(); Q.pop(); for (auto u: G[v]) { if (dist[u] == N) { dist[u] = dist[v] + 1; ans += dist[u]; Q.push(u); } } } } int main() { _upgrade cin >> n; set<pair<int, int>> S; for (int i = 1; i <= n; i++) { cin >> P[i]; auto it = S.lower_bound({P[i], 0}); while (it != S.end()) { int j = it->second; G[i].push_back(j); G[j].push_back(i); it++; } S.insert({P[i], i}); } for (int i = 1; i <= n; i++) { for (int j = 1; j <= n; j++) dist[j] = N; dist[i] = 0; LL ans = 0; BFS(i, ans); cout << ans << " "; } cout << "\n"; return 0; } |