#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] ){
mini = min(dfs(v), mini);
}
val[u] = min(u, mini);
return val[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, prev = u;
while( filled[in] ){
prev = par[prev];
cnt++;
in = par[in];
}
filled[prev] = false;
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;
}
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:28:13: warning: 'in' may be used uninitialized in this function [-Wmaybe-uninitialized]
filled[u] = true;
~~~~~~~~~~^~~~~~
ballmachine.cpp: In function 'int main()':
ballmachine.cpp:28:13: warning: 'in' may be used uninitialized in this function [-Wmaybe-uninitialized]
filled[u] = true;
~~~~~~~~~~^~~~~~
ballmachine.cpp:18:6: note: 'in' was declared here
int in, mini = 1e9;
^~
ballmachine.cpp:60:5: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
dfs(root);
~~~^~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
2816 KB |
Output is correct |
| 2 |
Correct |
329 ms |
5688 KB |
Output is correct |
| 3 |
Correct |
239 ms |
5624 KB |
Output is correct |
| 4 |
Correct |
4 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 |
6 ms |
2812 KB |
Output is correct |
| 8 |
Correct |
8 ms |
2816 KB |
Output is correct |
| 9 |
Correct |
24 ms |
2944 KB |
Output is correct |
| 10 |
Correct |
61 ms |
3576 KB |
Output is correct |
| 11 |
Correct |
387 ms |
5764 KB |
Output is correct |
| 12 |
Correct |
240 ms |
5732 KB |
Output is correct |
| 13 |
Correct |
318 ms |
5636 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1060 ms |
4608 KB |
Time limit exceeded |
| 2 |
Execution timed out |
1072 ms |
8696 KB |
Time limit exceeded |
| 3 |
Execution timed out |
1071 ms |
6008 KB |
Time limit exceeded |
| 4 |
Execution timed out |
1062 ms |
4728 KB |
Time limit exceeded |
| 5 |
Execution timed out |
1064 ms |
4600 KB |
Time limit exceeded |
| 6 |
Execution timed out |
1069 ms |
4608 KB |
Time limit exceeded |
| 7 |
Execution timed out |
1073 ms |
4216 KB |
Time limit exceeded |
| 8 |
Execution timed out |
1070 ms |
4728 KB |
Time limit exceeded |
| 9 |
Execution timed out |
1069 ms |
9080 KB |
Time limit exceeded |
| 10 |
Execution timed out |
1073 ms |
8568 KB |
Time limit exceeded |
| 11 |
Execution timed out |
1079 ms |
8568 KB |
Time limit exceeded |
| 12 |
Execution timed out |
1051 ms |
7292 KB |
Time limit exceeded |
| 13 |
Execution timed out |
1069 ms |
11128 KB |
Time limit exceeded |
| 14 |
Execution timed out |
1056 ms |
6036 KB |
Time limit exceeded |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1069 ms |
6088 KB |
Time limit exceeded |
| 2 |
Execution timed out |
1073 ms |
7416 KB |
Time limit exceeded |
| 3 |
Execution timed out |
1086 ms |
10364 KB |
Time limit exceeded |
| 4 |
Execution timed out |
1076 ms |
7800 KB |
Time limit exceeded |
| 5 |
Execution timed out |
1072 ms |
7416 KB |
Time limit exceeded |
| 6 |
Execution timed out |
1081 ms |
7544 KB |
Time limit exceeded |
| 7 |
Execution timed out |
1075 ms |
6520 KB |
Time limit exceeded |
| 8 |
Execution timed out |
1075 ms |
10360 KB |
Time limit exceeded |
| 9 |
Execution timed out |
1082 ms |
8952 KB |
Time limit exceeded |
| 10 |
Execution timed out |
1065 ms |
8568 KB |
Time limit exceeded |
| 11 |
Execution timed out |
1074 ms |
8568 KB |
Time limit exceeded |
| 12 |
Execution timed out |
1081 ms |
7416 KB |
Time limit exceeded |
| 13 |
Execution timed out |
1077 ms |
12024 KB |
Time limit exceeded |
| 14 |
Execution timed out |
1085 ms |
5748 KB |
Time limit exceeded |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1065 ms |
9008 KB |
Time limit exceeded |
| 2 |
Execution timed out |
1081 ms |
7544 KB |
Time limit exceeded |
| 3 |
Execution timed out |
1063 ms |
12024 KB |
Time limit exceeded |
| 4 |
Execution timed out |
1079 ms |
8952 KB |
Time limit exceeded |
| 5 |
Execution timed out |
1076 ms |
8700 KB |
Time limit exceeded |
| 6 |
Execution timed out |
1070 ms |
8568 KB |
Time limit exceeded |
| 7 |
Execution timed out |
1072 ms |
7420 KB |
Time limit exceeded |
| 8 |
Execution timed out |
1078 ms |
12280 KB |
Time limit exceeded |
| 9 |
Execution timed out |
1075 ms |
6060 KB |
Time limit exceeded |
