Submission #980628

#	Time	Username	Problem	Language	Result	Execution time	Memory
980628		enkhochir	Type Printer (IOI08_printer)	C++14	100 / 100	98 ms	100884 KiB

printer

#include<bits/stdc++.h>
using namespace std;
#define int long long
int n;
string s[25005];
int trie[500005][27];
int longest=0;
int cnt=1;
string ans="";
bool islong[500005], isend[500005];
void dfs(int node){
	if(isend[node]){
		ans+='P';
//		return;	
	}
	int tmp=-1;
	for(int i=0; i<26; i++){
		if(trie[node][i]>0){
			if(islong[trie[node][i]]){
				tmp=i;		
			}
			else{
				char tmpchar='a'+i;
				ans+=tmpchar;
				dfs(trie[node][i]);
				ans+='-';	
			}
		}
	}
	if(tmp!=-1){
		char tmpchar='a'+tmp;
		ans+=tmpchar;
		dfs(trie[node][tmp]);
		ans+='-';	
	}
}
signed main(){
	ios::sync_with_stdio(0);
	cin.tie(NULL);
	cin>>n;
	for(int i=0; i<n; i++){
		cin>>s[i];
		int sz=s[i].size();
		longest=max(longest,sz);
	}
	for(int i=0; i<n; i++){
		bool flag=0;
		if(s[i].size()==longest){
			longest=-1;
			flag=1;
		}	
		int cur=0;
		for(int j=0; j<s[i].size(); j++){
			if(trie[cur][s[i][j]-'a']==0){
				trie[cur][s[i][j]-'a']=cnt;
				cnt++;
			}
//			islong[cur]=flag;
			islong[trie[cur][s[i][j]-'a']]|=flag;	
			cur=trie[cur][s[i][j]-'a'];
							
		}
		isend[cur]=1;
	}
	dfs(0);
	while(ans.back()=='-'){
		ans.pop_back();	
	}
	cout<<ans.size()<<'\n';
	for(int i=0; i<ans.size(); i++){
		cout<<ans[i]<<'\n';	
	}
}

Compilation message (stderr)

printer.cpp: In function 'int main()':
printer.cpp:48:17: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   48 |   if(s[i].size()==longest){
      |      ~~~~~~~~~~~^~~~~~~~~
printer.cpp:53:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |   for(int j=0; j<s[i].size(); j++){
      |                ~^~~~~~~~~~~~
printer.cpp:70:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |  for(int i=0; i<ans.size(); i++){
      |               ~^~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10