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Submission #963417

# Submission time Handle Problem Language Result Execution time Memory
963417 2024-04-15T01:30:02 Z pcc Ball Machine (BOI13_ballmachine) C++17
16.1111 / 100
 157 ms 45316 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>

const int mxn = 1e5+10;
vector<int> tree[mxn];
vector<int> eul;
int par[mxn][20],dep[mxn];
int N,Q;
int rt;
int dp[mxn];
int dfn[mxn];
set<int> st;

void dfs(int now){
	for(int i = 1;i<20;i++)par[now][i] = par[par[now][i-1]][i-1];
	sort(tree[now].begin(),tree[now].end());
	for(auto nxt:tree[now]){
		dep[nxt] = dep[now]+1;
		par[nxt][0] = now;
		dfs(nxt);
	}
	dfn[now] = eul.size();
	eul.push_back(now);
	return;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>N>>Q;
	for(int i = 1;i<=N;i++){
		int p;
		cin>>p;
		par[i][0] = p;
		tree[p].push_back(i);
		if(!p)rt = i;
	}
	par[rt][0] = rt;
	dfs(rt);
	for(int i = 0;i<N;i++)st.insert(i);
	int C = 0;
	while(Q--){
		int t,k;
		cin>>t>>k;
		int lst = 0;
		//assert(C == N-st.size());
		if(t == 1){
			C += k;
			while(k--){
				lst = eul[*st.begin()];
				st.erase(*st.begin());
				dp[lst] = 1;
			}
			cout<<lst<<'\n';
		}
		else{
			C--;
			lst = k;
			for(int i = 19;i>=0;i--){
				if(dp[par[lst][i]])lst = par[lst][i];
			}
			dp[lst] = false;
			assert(st.find(dfn[lst]) == st.end());
			st.insert(dfn[lst]);
			cout<<dep[k]-dep[lst]<<'\n';
		}
	}
	return 0;
}

Subtask #1
0 / 25.0

# Verdict Execution time Memory Grader output
1 Runtime error 4 ms 5464 KB Execution killed with signal 6
2 Runtime error 39 ms 26224 KB Execution killed with signal 6
3 Runtime error 37 ms 25544 KB Execution killed with signal 6
4 Runtime error 4 ms 5212 KB Execution killed with signal 6
5 Runtime error 4 ms 5468 KB Execution killed with signal 6
6 Runtime error 4 ms 5724 KB Execution killed with signal 6
7 Runtime error 5 ms 5704 KB Execution killed with signal 6
8 Runtime error 4 ms 5724 KB Execution killed with signal 6
9 Runtime error 5 ms 6748 KB Execution killed with signal 6
10 Runtime error 12 ms 10588 KB Execution killed with signal 6
11 Runtime error 38 ms 26220 KB Execution killed with signal 6
12 Runtime error 46 ms 25636 KB Execution killed with signal 6
13 Runtime error 36 ms 26064 KB Execution killed with signal 6

Subtask #2
6.42857142857 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 7252 KB Output is correct
2 Runtime error 74 ms 44228 KB Execution killed with signal 6
3 Runtime error 73 ms 35808 KB Execution killed with signal 6
4 Runtime error 21 ms 17240 KB Execution killed with signal 6
5 Runtime error 19 ms 16988 KB Execution killed with signal 6
6 Runtime error 20 ms 16884 KB Execution killed with signal 6
7 Runtime error 20 ms 15196 KB Execution killed with signal 6
8 Correct 29 ms 7252 KB Output is correct
9 Runtime error 69 ms 45004 KB Execution killed with signal 6
10 Runtime error 95 ms 44256 KB Execution killed with signal 6
11 Runtime error 71 ms 43984 KB Execution killed with signal 6
12 Runtime error 88 ms 40136 KB Execution killed with signal 6
13 Correct 82 ms 23444 KB Output is correct
14 Runtime error 60 ms 35672 KB Execution killed with signal 6

Subtask #3
8.57142857143 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 52 ms 12672 KB Output isn't correct
2 Runtime error 75 ms 40968 KB Execution killed with signal 6
3 Correct 98 ms 21788 KB Output is correct
4 Runtime error 59 ms 37064 KB Execution killed with signal 6
5 Runtime error 80 ms 36364 KB Execution killed with signal 6
6 Runtime error 57 ms 36304 KB Execution killed with signal 6
7 Runtime error 54 ms 33744 KB Execution killed with signal 6
8 Correct 90 ms 21752 KB Output is correct
9 Runtime error 145 ms 45280 KB Execution killed with signal 6
10 Runtime error 119 ms 44496 KB Execution killed with signal 6
11 Runtime error 107 ms 44240 KB Execution killed with signal 6
12 Runtime error 73 ms 40904 KB Execution killed with signal 6
13 Correct 157 ms 26828 KB Output is correct
14 Runtime error 75 ms 36556 KB Execution killed with signal 6

Subtask #4
1.11111111111 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 70 ms 44980 KB Execution killed with signal 6
2 Runtime error 71 ms 40908 KB Execution killed with signal 6
3 Correct 119 ms 26244 KB Output is correct
4 Runtime error 81 ms 45316 KB Execution killed with signal 6
5 Runtime error 74 ms 44244 KB Execution killed with signal 6
6 Runtime error 70 ms 44240 KB Execution killed with signal 6
7 Runtime error 80 ms 40908 KB Execution killed with signal 6
8 Correct 94 ms 26140 KB Output is correct
9 Runtime error 63 ms 36116 KB Execution killed with signal 6