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- #include <bits/stdc++.h>
- using namespace std;
- const int maxn = 350005;
- vector<int> graph[maxn];
- bool visited[maxn];
- int segment_tree[3 * maxn];
- vector<int> topological_sorting;
- void dfs(int node) {
- visited[node] = true;
- for(int i = 0; i < (int) graph[node].size(); i++) {
- int neighbour = graph[node][i];
- if(!visited[neighbour]) {
- dfs(neighbour);
- }
- }
- topological_sorting.push_back(node);
- }
- void build_tree(int L, int R, int node) {
- if(L == R) {
- segment_tree[node] = 0;
- }
- else {
- int middle = (L + R) / 2;
- build_tree(L, middle, 2 * node);
- build_tree(middle + 1 ,R, 2 * node + 1);
- segment_tree[node] = segment_tree[2 * node] + segment_tree[2 * node + 1];
- }
- }
- // L R i j L R
- int query(int i, int j, int L, int R, int node) {
- if(i <= L and R <= j) {
- return segment_tree[node];
- }
- if(R < i or j < L) {
- return 0;
- }
- int middle = (L + R) / 2;
- return query(i, j, L, middle, 2 * node) + query(i, j, middle + 1, R, 2 * node + 1);
- }
- void update(int idx, int new_value, int L, int R, int node) {
- if(L == R) {
- segment_tree[node] += new_value;
- return;
- }
- int middle = (L + R) / 2;
- if(idx <= middle) {
- update(idx, new_value, L, middle, 2 * node);
- }
- else {
- update(idx, new_value, middle + 1, R, 2 * node + 1);
- }
- segment_tree[node] = segment_tree[2 * node] + segment_tree[2 * node + 1];
- }
- int main()
- {
- ios_base::sync_with_stdio(false);
- int n;
- cin >> n;
- for(int i = 0; i < n; i++) {
- char c;
- cin >> c;
- if(c == 'K') {
- graph[i + 1].push_back(i + 1);
- }
- else {
- int p;
- cin >> p;
- graph[p].push_back(i + 1);
- }
- }
- memset(visited, false, sizeof visited);
- for(int i = 1; i <= n; i++) {
- if(!visited[i]) {
- dfs(i);
- }
- }
- build_tree(0, n + 1, 1);
- vector<int> res(n + 1);
- for(int i = 0; i < n; i++) {
- update(topological_sorting[i], 1, 0, n + 1, 1);
- res[topological_sorting[i]] = query(0, topological_sorting[i], 0, n + 1, 1);
- }
- for(int i = 1; i <= n; i++) {
- cout << res[i] << "\n";
- }
- return 0;
- }
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