Submission #1099875

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099875		horezushol	Type Printer (IOI08_printer)	C++17	100 / 100	222 ms	96640 KiB

printer

#include<bits/stdc++.h>
#define F first
#define S second
#define SZ(x) int((x).size())
const char nl = '\n';
using ll = long long;
using namespace std;

const int N = 25000 * 21;
int nam = 0;
int n;
int trie[N][27];
int dep[N][27];
bool stop[N];

void add(string s) {
	int x = 0;
	for (auto c : s) {
		if (!trie[x][c-'a']) {
			trie[x][c-'a'] = ++nam;
		}
		dep[x][c-'a'] = max(dep[x][c-'a'], SZ(s));
		x = trie[x][c-'a'];
	}
	stop[x] = true;
}

vector<char> res;
int fine = 0;
void dfs(int x) {
	if (stop[x]) {
		res.push_back('P');
		fine ++;
	}
	vector<int> topo(26, 0);
	iota(topo.begin(), topo.end(), 0);
	sort(topo.begin(), topo.end(), [&](int a, int b) {
		return dep[x][a] < dep[x][b];
	});
	for (auto c : topo) {
		if (!trie[x][c]) {
			continue;
		}
		res.push_back(c + 'a');
		dfs(trie[x][c]);
	}
	if (fine != n) {
		res.push_back('-');
	}
}

void verkefni() {
	cin >> n;
	for (int i = 0; i < n; i ++) {
		string s; cin >> s;
		add(s);
	}
	dfs(0);
	cout << SZ(res) << nl;
	for (auto el : res) {
		cout << el << nl;
	}
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int tst = 1;
// 	cin >> tst;
	while (tst --) {
		verkefni();
	}
}

• 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