Submission #197669

#	Time	Username	Problem	Language	Result	Execution time	Memory
197669		Sakamotoo	Type Printer (IOI08_printer)	C++14	100 / 100	248 ms	119840 KiB

printer

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
 
typedef tree < long long ,  null_type ,  less<long long> ,  rb_tree_tag ,  tree_order_statistics_node_update > ordered_set;
 
#define mp make_pair
#define fi first
#define se second
 
//mt19937 rng(time(NULL)); //int
mt19937_64 rng(time(NULL)); //Long Long
//shuffle(a.begin(),a.end(),rng); //shuffle
//rng(); //random
 
struct node{
	node *c[30];
	int val=0;
	int awal=0;
	node *b;
	int cnt=0;
	int maxi=0;
};
 
node *root= new node;
 
void ins(string s){
	node *now=root;
	for(int i=0; i<s.size(); i++){
		int ind=s[i]-'a'+1;
		if(now->c[ind]==NULL){
			now->c[ind]=new node;
			now->c[ind]->b=now;
		}
		now=now->c[ind];
		now->val=1;
		now->maxi=max(now->maxi,(int)s.size()-i);
	}
	now->cnt++;
}
 
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL); cout.tie(NULL);
	
	int n;
	cin>>n;
	root->awal=1;
	for(int i=1; i<=n; i++){
		string s;
		cin>>s;
		ins(s);
	}
	int pri=0;
	node *now=root;
	vector<char> v; 
	while(true){
		int ind=0;
		int lol=1e9;
		for(int i=1; i<=26; i++){
			if(now->c[i]==NULL){
				
			}else if(now->c[i]->val>0&&now->c[i]->maxi<lol){
				ind=i;
				lol=now->c[i]->maxi;
			}
		}
		if(now->cnt>0){
			now->cnt--;
			v.push_back('P');
			pri++;
		}else if(ind==0){
			v.push_back('-');
			now=now->b;
		}else {
			v.push_back('a'+ind-1);
			now=now->c[ind];
			now->val--;
		}
		if(pri==n) break; 
	}
	cout<<v.size()<<endl;
	for(int i=0; i<v.size(); i++){
		printf("%c\n",v[i]);
	}
}

Compilation message (stderr)

printer.cpp: In function 'void ins(std::__cxx11::string)':
printer.cpp:31:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<s.size(); i++){
               ~^~~~~~~~~
printer.cpp: In function 'int main()':
printer.cpp:85:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<v.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