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Submission #953155

# Submission time Handle Problem Language Result Execution time Memory
953155 2024-03-25T14:58:26 Z PM1 File Paths (BOI15_fil) C++17
0 / 100
 17 ms 9048 KB 
#include <bits/stdc++.h>
using namespace std;
const int mxn=3e3+5,mxs=1e6+5;
int n,m,s,k,par[mxn*2],dis[mxn*2];
vector<int>all,v[mxn*2];
int mark[mxs],ans[mxn*2];
void make(int x,bool y){
	int z=x;
	while(x!=0){
		x=par[x];
		int d=dis[z]-dis[x];
		if(d<=k)mark[d]=y;
	}
}
void dfs1(int z,int g,int x){
	if(z>n)
		return ;
	int y=x+dis[z];
	if(x<mxs)
		mark[y]+=g;
	for(auto i:v[z])
		dfs1(i,g,x);
}
void dfs(int z){
	if(z>n){
		int x=k-dis[z];
		for(int i=1;i*i<=x;i++){
			if(x%i==0 &&(mark[i] || mark[x/i]))ans[z]=1;
		}
	}
	dfs1(z,1,s-dis[z]);
	for(auto i:v[z])
		dfs(i);
	dfs1(z,-1,s-dis[z]);
}
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>m>>k>>s;
	s++;
	dis[0]=1;
	for(int i=1;i<=n+m;i++){
		int x,y;
		cin>>x>>y;
		par[i]=x;
		dis[i]=dis[x]+y;
		v[x].push_back(i);
		if(i<=n){
			dis[i]++;
			all.push_back(dis[i]);
		}
	}
	all.push_back(1);
	for(int i=n+1;i<=n+m;i++){
		make(i,1);
		if(dis[i]==k)ans[i]=1;
		for(auto j:all){
			int res=k-j-s;
			if(res>=0 && mark[res])ans[i]=1;
		}
		make(i,0);
	}
	dfs(0);
	for(int i=n+1;i<=n+m;i++){
		if(ans[i])
			cout<<"YES"<<'\n';
		else
			cout<<"NO"<<'\n';
	}
	return 0;
}

Subtask #1
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 4 ms 2652 KB Output is correct
5 Runtime error 8 ms 8796 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #2
0 / 33.0

# Verdict Execution time Memory Grader output
1 Runtime error 17 ms 9048 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 4 ms 2652 KB Output is correct
5 Runtime error 8 ms 8796 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -