#include <cstdio> #include <algorithm> #include <vector> #include <deque> int perm[200 * 1000]; int distances[200 * 1000]; int main() { int n; scanf("%d", &n); for (int i = 0; i < n; i++) { int j; scanf("%d", &j); j -= 1; perm[i] = j; } std::vector<std::vector<int>> edges; edges.reserve(n); for (int i = 0; i < n; i++) { std::vector<int> i_edges; for (int j = 0; j < i; j++) { if (perm[i] < perm[j]) { i_edges.push_back(j); edges[j].push_back(i); } } edges.push_back(std::move(i_edges)); } std::deque<int> deq; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { distances[j] = -1; } long long int distance_sum = 0; deq.push_back(i); distances[i] = 0; while (!deq.empty()) { int current = deq.front(); deq.pop_front(); for (int nb : edges[current]) { if (distances[nb] == -1) { distances[nb] = distances[current] + 1; distance_sum += distances[nb]; deq.push_back(nb); } } } printf("%lld ", distance_sum); } putchar('\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 | #include <cstdio> #include <algorithm> #include <vector> #include <deque> int perm[200 * 1000]; int distances[200 * 1000]; int main() { int n; scanf("%d", &n); for (int i = 0; i < n; i++) { int j; scanf("%d", &j); j -= 1; perm[i] = j; } std::vector<std::vector<int>> edges; edges.reserve(n); for (int i = 0; i < n; i++) { std::vector<int> i_edges; for (int j = 0; j < i; j++) { if (perm[i] < perm[j]) { i_edges.push_back(j); edges[j].push_back(i); } } edges.push_back(std::move(i_edges)); } std::deque<int> deq; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { distances[j] = -1; } long long int distance_sum = 0; deq.push_back(i); distances[i] = 0; while (!deq.empty()) { int current = deq.front(); deq.pop_front(); for (int nb : edges[current]) { if (distances[nb] == -1) { distances[nb] = distances[current] + 1; distance_sum += distances[nb]; deq.push_back(nb); } } } printf("%lld ", distance_sum); } putchar('\n'); return 0; } |