#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp> // Common file
// #include <ext/pb_ds/tree_policy.hpp> // Including tree_order_statistics_node_update
using namespace std;
// using namespace __gnu_pbds;
#define debug(s) cerr << #s << " = " << s << '\n'
#define all(v) (v).begin(), (v).end()
#define mem(a,val) memset(a, val, sizeof a)
#define ff first
#define ss second
typedef long long ll;
// typedef tree<pair<int, int>,null_type,less<pair<int, int>>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
const int N = 100010;
int n, q, ptr, root;
int T[N], P[N][20], L[N], col[N], val[N], sub[N];
vector<int> adj[N];
set<pair<int, int>> s;
bool cmp(int A, int B) {
return sub[A] < sub[B];
}
void dfs0(int from, int u) {
sub[u] = u;
for (auto v: adj[u]) {
if (v == from) continue;
dfs0(v, u);
sub[u] = min(sub[u], sub[v]);
}
sort(all(adj[u]), cmp);
}
void dfs(int from, int u, int dep) {
T[u] = from;
P[u][0] = from;
L[u] = dep;
for (auto v: adj[u]){
if (v == from) continue;
dfs(u, v, dep + 1);
}
val[u] = ptr;
s.insert({ptr++, u});
}
void init() {
int i, j;
for (i = 1; i <= n; i++)
P[i][0] = T[i];
for (i = 1; i <= n; i++)
for (j = 1; j < 17; j++)
P[i][j] = P[P[i][j - 1]][j - 1];
}
int main() {
scanf("%d %d", &n, &q);
for (int i = 1; i <= n; ++i) {
int x;
scanf("%d", &x);
if (x == 0) root = i;
adj[x].push_back(i);
}
dfs0(0, root);
dfs(0, root, 0);
init();
while (q--) {
int ty, v;
scanf("%d %d", &ty, &v);
if (ty == 1) {
int ret;
while (v--) {
int node = (*s.begin()).ss;
col[node] = 1;
ret = node;
s.erase({val[node], node});
}
printf("%d\n", ret);
}
else {
int ret = 0;
for (int i = 16; i >= 0; --i) {
if (col[P[v][i]]) {
ret += (1 << i);
v = P[v][i];
}
}
col[v] = 0;
s.insert({val[v], v});
printf("%d\n", ret);
}
}
}
Compilation message
ballmachine.cpp: In function 'int main()':
ballmachine.cpp:63:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", &n, &q);
~~~~~^~~~~~~~~~~~~~~~~
ballmachine.cpp:66:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &x);
~~~~~^~~~~~~~~~
ballmachine.cpp:75:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", &ty, &v);
~~~~~^~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
80 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Runtime error |
94 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 3 |
Runtime error |
93 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 4 |
Runtime error |
78 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 5 |
Runtime error |
77 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 6 |
Runtime error |
77 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 7 |
Runtime error |
81 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 8 |
Runtime error |
76 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 9 |
Runtime error |
77 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 10 |
Runtime error |
83 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 11 |
Runtime error |
95 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 12 |
Runtime error |
93 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 13 |
Runtime error |
96 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
47 ms |
8056 KB |
Output is correct |
| 2 |
Runtime error |
109 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 3 |
Runtime error |
98 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 4 |
Runtime error |
81 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 5 |
Runtime error |
85 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 6 |
Incorrect |
73 ms |
9596 KB |
Output isn't correct |
| 7 |
Runtime error |
85 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 8 |
Correct |
51 ms |
8060 KB |
Output is correct |
| 9 |
Runtime error |
99 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 10 |
Runtime error |
103 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 11 |
Incorrect |
155 ms |
24184 KB |
Output isn't correct |
| 12 |
Runtime error |
96 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 13 |
Correct |
120 ms |
25976 KB |
Output is correct |
| 14 |
Runtime error |
94 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
87 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Runtime error |
100 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 3 |
Incorrect |
130 ms |
23800 KB |
Output isn't correct |
| 4 |
Runtime error |
101 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 5 |
Runtime error |
101 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 6 |
Runtime error |
100 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 7 |
Runtime error |
93 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 8 |
Incorrect |
122 ms |
23800 KB |
Output isn't correct |
| 9 |
Runtime error |
109 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 10 |
Incorrect |
211 ms |
24184 KB |
Output isn't correct |
| 11 |
Incorrect |
189 ms |
24184 KB |
Output isn't correct |
| 12 |
Runtime error |
101 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 13 |
Incorrect |
218 ms |
29304 KB |
Output isn't correct |
| 14 |
Runtime error |
99 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
104 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Runtime error |
103 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 3 |
Correct |
144 ms |
28932 KB |
Output is correct |
| 4 |
Runtime error |
100 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 5 |
Incorrect |
178 ms |
24184 KB |
Output isn't correct |
| 6 |
Runtime error |
100 ms |
131072 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 7 |
Runtime error |
103 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 8 |
Correct |
138 ms |
28920 KB |
Output is correct |
| 9 |
Runtime error |
101 ms |
131076 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
