Submission #803272

#	Time	Username	Problem	Language	Result	Execution time	Memory
803272		UmairAhmadMirza	Type Printer (IOI08_printer)	C++17	0 / 100	70 ms	41072 KiB

printer

#include <bits/stdc++.h>
using namespace std;
int const N=1e5+5;

struct node
{
	char ch;
	map<char,node*> mp;
	set<pair<int,node*>> adj;
	int dep=1;
	int cnt=0;
};
node* root;
void add(){
	string s;
	cin>>s;
	int i=0;
	node* cur=root;
	while(i<s.length()){
		if(cur->mp[s[i]]==NULL){
			cur->mp[s[i]]=new node();
			cur->mp[s[i]]->ch=s[i];
		}
		cur=cur->mp[s[i]];
		i++;
	}
	cur->cnt++;
}
int dep_set(node* rt){
	for(auto i:rt->mp){
		rt->dep=max(rt->dep,dep_set(i.second)+1);
		rt->adj.insert({i.second->dep,i.second});
	}
	return rt->dep;
}
vector<char> ans;
void dfs1(node* rt){
	for (int i = 0; i < rt->cnt; ++i)
		ans.push_back('P');
	for(auto i:rt->adj){
		ans.push_back(i.second->ch);
		dfs1(i.second);
		ans.push_back('-');
	}
}
int main(){
	int t;
	cin>>t;
	root=new node();
	for (int i = 0; i < t; ++i)
		add();
	dep_set(root);
	dfs1(root);
	int sz=ans.size();
	while(sz>0&&ans[sz-1]=='-'){
		ans.pop_back();
		sz--;
	}
	printf("%d",sz);
	for(char i:ans)
		printf("%c",i);
	return 0;
}

Compilation message (stderr)

printer.cpp: In function 'void add()':
printer.cpp:19:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |  while(i<s.length()){
      |        ~^~~~~~~~~~~

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