#include <bits/stdc++.h>
using namespace std;
int par[100005], val[100005];
bool filled[100005];
vector<int> child[100005];
bool compareInt(const int& lhs, const int& rhs)
{
return val[lhs] < val[rhs];
}
int dfs( int u ){
int mini = 1e9;
for( auto v : child[u] ){
mini = min(dfs(v), mini);
}
val[u] = min(u, mini);
return val[u];
}
pair<int, int> add( int u, int cnt ){
//cout << u << " " << cnt << endl;
bool used = false;
pair<int, int> ret;
for( auto v : child[u] ){
used = true;
if( !filled[v] && cnt > 0 ){
ret = add(v, cnt);
cnt = ret.second;
}
}
if( !used || cnt > 0 ){
filled[u] = true;
return {u, cnt-1};
}
else{
return {ret.first, cnt};
}
}
int del( int u ){
int in = par[u], cnt = 0, prev = u;
while( filled[in] ){
prev = par[prev];
cnt++;
in = par[in];
}
filled[prev] = false;
return cnt;
}
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
int n, q, root, type, k;
cin >> n >> q;
memset(filled, false, sizeof filled);
for( int i = 1; i <= n; ++i ){
cin >> par[i];
child[par[i]].push_back(i);
if( par[i] == 0 )
root = i;
}
dfs(root);
for( int i = 0; i < n; ++i )
sort(child[i].begin(), child[i].end(), compareInt);
for( int i= 0; i < q; ++i ){
cin >> type >> k;
if( type == 1 ){
pair<int, int> out;
out = add(root, k);
cout << out.first << endl;
} else {
cout << del(k) << endl;
}
}
return 0;
}
Compilation message
ballmachine.cpp: In function 'int main()':
ballmachine.cpp:79:13: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
out = add(root, k);
~~~^~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2816 KB |
Output is correct |
2 |
Correct |
212 ms |
4576 KB |
Output is correct |
3 |
Correct |
203 ms |
4728 KB |
Output is correct |
4 |
Correct |
5 ms |
2816 KB |
Output is correct |
5 |
Correct |
5 ms |
2816 KB |
Output is correct |
6 |
Correct |
6 ms |
2816 KB |
Output is correct |
7 |
Correct |
7 ms |
2816 KB |
Output is correct |
8 |
Correct |
6 ms |
2816 KB |
Output is correct |
9 |
Correct |
24 ms |
2944 KB |
Output is correct |
10 |
Correct |
55 ms |
3200 KB |
Output is correct |
11 |
Correct |
232 ms |
4700 KB |
Output is correct |
12 |
Correct |
206 ms |
4728 KB |
Output is correct |
13 |
Correct |
185 ms |
4460 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1069 ms |
4452 KB |
Time limit exceeded |
2 |
Correct |
272 ms |
7972 KB |
Output is correct |
3 |
Execution timed out |
1070 ms |
5424 KB |
Time limit exceeded |
4 |
Correct |
162 ms |
4600 KB |
Output is correct |
5 |
Incorrect |
171 ms |
4572 KB |
Output isn't correct |
6 |
Incorrect |
262 ms |
4636 KB |
Output isn't correct |
7 |
Correct |
168 ms |
4060 KB |
Output is correct |
8 |
Execution timed out |
1062 ms |
4420 KB |
Time limit exceeded |
9 |
Correct |
264 ms |
8696 KB |
Output is correct |
10 |
Correct |
269 ms |
8060 KB |
Output is correct |
11 |
Execution timed out |
1066 ms |
8220 KB |
Time limit exceeded |
12 |
Correct |
270 ms |
6908 KB |
Output is correct |
13 |
Execution timed out |
1056 ms |
10488 KB |
Time limit exceeded |
14 |
Execution timed out |
1073 ms |
5212 KB |
Time limit exceeded |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1041 ms |
5988 KB |
Time limit exceeded |
2 |
Execution timed out |
1078 ms |
6828 KB |
Time limit exceeded |
3 |
Execution timed out |
1069 ms |
9884 KB |
Time limit exceeded |
4 |
Execution timed out |
1065 ms |
7416 KB |
Time limit exceeded |
5 |
Execution timed out |
1058 ms |
7040 KB |
Time limit exceeded |
6 |
Execution timed out |
1049 ms |
7144 KB |
Time limit exceeded |
7 |
Execution timed out |
1072 ms |
6008 KB |
Time limit exceeded |
8 |
Execution timed out |
1070 ms |
9856 KB |
Time limit exceeded |
9 |
Execution timed out |
1049 ms |
8360 KB |
Time limit exceeded |
10 |
Execution timed out |
1057 ms |
7924 KB |
Time limit exceeded |
11 |
Execution timed out |
1037 ms |
8056 KB |
Time limit exceeded |
12 |
Execution timed out |
1067 ms |
6756 KB |
Time limit exceeded |
13 |
Execution timed out |
1084 ms |
11436 KB |
Time limit exceeded |
14 |
Correct |
256 ms |
5108 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1058 ms |
8312 KB |
Time limit exceeded |
2 |
Execution timed out |
1041 ms |
6880 KB |
Time limit exceeded |
3 |
Execution timed out |
1057 ms |
11420 KB |
Time limit exceeded |
4 |
Execution timed out |
1048 ms |
8356 KB |
Time limit exceeded |
5 |
Execution timed out |
1052 ms |
8188 KB |
Time limit exceeded |
6 |
Execution timed out |
1065 ms |
8192 KB |
Time limit exceeded |
7 |
Execution timed out |
1050 ms |
6876 KB |
Time limit exceeded |
8 |
Execution timed out |
1047 ms |
11384 KB |
Time limit exceeded |
9 |
Execution timed out |
1067 ms |
5184 KB |
Time limit exceeded |