Submission #922062

#	Time	Username	Problem	Language	Result	Execution time	Memory
922062		Syrius	Type Printer (IOI08_printer)	C++14	100 / 100	124 ms	99536 KiB

printer

#include <bits/stdc++.h>
using namespace std;
 
//#define int long long
#define ll long long
#define ff first
#define ss second
#define pint pair < int , int >
#define fast ios_base::sync_with_stdio(NULL); cin.tie(NULL)
 
const int inf = 1e9 + 9;
const int mxn = 1e6 + 2;
const int mod = 1e9 + 7;

struct node {
	bool ends , path;
	node *branch[26];
	node () {
		ends = path = 0;
		for (int i = 0; i < 26; i++) branch[i] = NULL;
	}
};

void insert(node *root , string s) {
	for (int i = 0; i < s.size(); i++) {
		int id = s[i] - 'a';
		if (root -> branch[id] == NULL) root -> branch[id] = new node();
		root = root -> branch[id];
	}
	root -> ends = 1;
}

void createpath(node *root , string s) {
	for (int i = 0; i < s.size(); i++) {
		int id = s[i] - 'a';
		root -> branch[id] -> path = 1;
		root = root -> branch[id];
	}
}

vector < char > ans;
void print(node *root) {
	
	node *go = NULL;
	char add;
	if (root -> ends) ans.push_back('P');
	for (int i = 0; i < 26; i++) {
		if (root -> branch[i] == NULL) continue;
		if (root -> branch[i] -> path) {
			go = root -> branch[i];
			add = i + 'a';
			continue;	
		}
		ans.push_back(i + 'a');
		print(root -> branch[i]);
		ans.push_back('-');
	}
	
	if (go != NULL) {
		ans.push_back(add);
		print(go);
	}
}

int main() {
	
	int n;
	cin >> n;
	
	node *root = new node();
	string mx;
	int sz = 0;
	
	for (int i = 0; i < n; i++) {
		string s;
		cin >> s;
		insert(root , s);
		if (s.size() > sz) {
			mx = s;
			sz = s.size();
		}
	}
	
	createpath(root , mx);
	
	print(root);
	cout << ans.size() << '\n';
	for (int i = 0; i < ans.size(); i++) cout << ans[i] << '\n';
	return 0;
}

Compilation message (stderr)

printer.cpp: In function 'void insert(node*, std::string)':
printer.cpp:25:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for (int i = 0; i < s.size(); i++) {
      |                  ~~^~~~~~~~~~
printer.cpp: In function 'void createpath(node*, std::string)':
printer.cpp:34:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |  for (int i = 0; i < s.size(); i++) {
      |                  ~~^~~~~~~~~~
printer.cpp: In function 'int main()':
printer.cpp:78:16: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   78 |   if (s.size() > sz) {
      |       ~~~~~~~~~^~~~
printer.cpp:88:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |  for (int i = 0; i < ans.size(); i++) cout << ans[i] << '\n';
      |                  ~~^~~~~~~~~~~~

• 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