#include <bits/stdc++.h>
using namespace std;
int par[100005], val[100005];
bool filled[100005];
vector<int> child[100005];
int dfs( int u ){
int mini = 1e9;
for( auto v : child[u] ){
//cout << u << " " << v << endl;
mini = min(dfs(v), mini);
}
val[u] = min(u, mini);
if( mini != 1e9 )
return mini;
else
return u;
}
int add( int u ){
int in, mini = 1e9;
for( auto v : child[u] ){
if( val[v] < mini && !filled[v] ){
in = v;
mini = val[v];
}
}
if( mini == 1e9 ){
filled[u] = true;
return u;
}
else
return add(in);
}
int del( int u ){
int in = par[u], cnt = 0;
filled[u] = false;
while( filled[in] ){
filled[u] = true;
u = par[u];
cnt++;
filled[in] = false;
in = par[in];
}
return cnt;
}
int main(){
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;
}
child[0].push_back(1);
par[1]=0;
dfs(root);
for( int i= 0; i < q; ++i ){
cin >> type >> k;
if( type == 1 ){
int out;
for( int i = 0; i < k; ++i ){
out = add(root);
}
cout << out << endl;
} else {
cout << del(k) << endl;
}
}
return 0;
}
Compilation message
ballmachine.cpp: In function 'int add(int)':
ballmachine.cpp:33:13: warning: 'in' may be used uninitialized in this function [-Wmaybe-uninitialized]
filled[u] = true;
~~~~~~~~~~^~~~~~
ballmachine.cpp: In function 'int main()':
ballmachine.cpp:33:13: warning: 'in' may be used uninitialized in this function [-Wmaybe-uninitialized]
filled[u] = true;
~~~~~~~~~~^~~~~~
ballmachine.cpp:23:6: note: 'in' was declared here
int in, mini = 1e9;
^~
ballmachine.cpp:68:5: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
dfs(root);
~~~^~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
5 ms |
2816 KB |
Output isn't correct |
| 2 |
Incorrect |
294 ms |
4568 KB |
Output isn't correct |
| 3 |
Incorrect |
270 ms |
4912 KB |
Output isn't correct |
| 4 |
Incorrect |
5 ms |
2816 KB |
Output isn't correct |
| 5 |
Incorrect |
5 ms |
2816 KB |
Output isn't correct |
| 6 |
Incorrect |
8 ms |
2816 KB |
Output isn't correct |
| 7 |
Incorrect |
7 ms |
2816 KB |
Output isn't correct |
| 8 |
Incorrect |
8 ms |
2816 KB |
Output isn't correct |
| 9 |
Incorrect |
21 ms |
2944 KB |
Output isn't correct |
| 10 |
Incorrect |
67 ms |
3200 KB |
Output isn't correct |
| 11 |
Incorrect |
325 ms |
4640 KB |
Output isn't correct |
| 12 |
Incorrect |
262 ms |
4640 KB |
Output isn't correct |
| 13 |
Incorrect |
274 ms |
4624 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1041 ms |
4388 KB |
Time limit exceeded |
| 2 |
Execution timed out |
1014 ms |
7800 KB |
Time limit exceeded |
| 3 |
Execution timed out |
1077 ms |
5368 KB |
Time limit exceeded |
| 4 |
Execution timed out |
1082 ms |
4352 KB |
Time limit exceeded |
| 5 |
Execution timed out |
1079 ms |
4224 KB |
Time limit exceeded |
| 6 |
Execution timed out |
1065 ms |
4352 KB |
Time limit exceeded |
| 7 |
Execution timed out |
1069 ms |
3840 KB |
Time limit exceeded |
| 8 |
Execution timed out |
1063 ms |
4444 KB |
Time limit exceeded |
| 9 |
Execution timed out |
1080 ms |
8312 KB |
Time limit exceeded |
| 10 |
Execution timed out |
1066 ms |
7800 KB |
Time limit exceeded |
| 11 |
Execution timed out |
1078 ms |
7800 KB |
Time limit exceeded |
| 12 |
Execution timed out |
1078 ms |
6648 KB |
Time limit exceeded |
| 13 |
Execution timed out |
1076 ms |
10364 KB |
Time limit exceeded |
| 14 |
Execution timed out |
1036 ms |
5328 KB |
Time limit exceeded |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1051 ms |
5624 KB |
Time limit exceeded |
| 2 |
Execution timed out |
1043 ms |
6632 KB |
Time limit exceeded |
| 3 |
Execution timed out |
1083 ms |
9724 KB |
Time limit exceeded |
| 4 |
Execution timed out |
1067 ms |
7160 KB |
Time limit exceeded |
| 5 |
Execution timed out |
1060 ms |
6904 KB |
Time limit exceeded |
| 6 |
Execution timed out |
1082 ms |
6780 KB |
Time limit exceeded |
| 7 |
Execution timed out |
1080 ms |
5880 KB |
Time limit exceeded |
| 8 |
Execution timed out |
1089 ms |
9592 KB |
Time limit exceeded |
| 9 |
Execution timed out |
1086 ms |
8312 KB |
Time limit exceeded |
| 10 |
Execution timed out |
1071 ms |
7800 KB |
Time limit exceeded |
| 11 |
Execution timed out |
1082 ms |
7800 KB |
Time limit exceeded |
| 12 |
Execution timed out |
1068 ms |
6648 KB |
Time limit exceeded |
| 13 |
Execution timed out |
1073 ms |
11304 KB |
Time limit exceeded |
| 14 |
Execution timed out |
1072 ms |
4852 KB |
Time limit exceeded |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1066 ms |
8200 KB |
Time limit exceeded |
| 2 |
Execution timed out |
1076 ms |
6652 KB |
Time limit exceeded |
| 3 |
Execution timed out |
1079 ms |
11456 KB |
Time limit exceeded |
| 4 |
Execution timed out |
1080 ms |
8312 KB |
Time limit exceeded |
| 5 |
Execution timed out |
1076 ms |
7928 KB |
Time limit exceeded |
| 6 |
Execution timed out |
1080 ms |
7800 KB |
Time limit exceeded |
| 7 |
Execution timed out |
1088 ms |
6648 KB |
Time limit exceeded |
| 8 |
Execution timed out |
1080 ms |
11384 KB |
Time limit exceeded |
| 9 |
Execution timed out |
1077 ms |
5176 KB |
Time limit exceeded |
