Submission #1061167

#	Time	Username	Problem	Language	Result	Execution time	Memory
1061167		belgianbot	Type Printer (IOI08_printer)	C++17	100 / 100	59 ms	31944 KiB

printer

    #include <bits/stdc++.h>
    #define int long long
    using namespace std;
     
    vector<char> ans, letters;
    vector<vector<pair<int,int>>> adj;
    void dfs(int curr) {
    	
    	sort(adj[curr].begin(), adj[curr].end());
    	//if (adj[curr].empty()) ans.push_back('P');
    	for (auto x : adj[curr]) {
    		ans.push_back(letters[x.second]);
    		dfs(x.second);
    		if (letters[x.second] != 'P') ans.push_back('-');
    	}
    }
    signed main() {
    	ios::sync_with_stdio(false);
    	cin.tie(0);
    	int N; cin >> N;
    	vector<string> words(N);
    	
    	for (int i = 0; i < N; i++) cin >> words[i];
    	sort(words.begin(), words.end());
    	
    	int cnt = 1;
    	letters.resize(N * 21 + 1);
    	adj.resize(N * 20 + 1);
    	for (int i = 0; i < N; i++) {
    		int pos = 0;
    		for (int j = 0; j < words[i].length(); j++) {
    			bool exist = false;
    			for (int k = 0; k < adj[pos].size(); k++) {
    				auto x = adj[pos][k];
    				if (letters[x.second] == words[i][j]) {
						int left = (int)words[i].length() - j - 1;
    					if (left > adj[pos][k].first) adj[pos][k].first = left;
    					pos = x.second;
    					exist = true;
    					break;
    				}
    			}
    			if (!exist) {
    				adj[pos].push_back({(int)words[i].length() - j - 1, cnt});
    				letters[cnt] = words[i][j];
    				pos = cnt;
    				cnt++;
    			}
    		}
    		adj[pos].push_back({0, cnt});
    		letters[cnt] = 'P';
    		cnt++;
    	}
    	dfs(0);
    	int m = ans.size();
    	for (int i = m-1; ans[i] == '-'; i--) {
    		ans.pop_back();
    	}
    	m = ans.size(); cout << m << '\n';
    	for (int i = 0; i < m; i++) cout << ans[i] << '\n';
    	
    	return 0;
    }

Compilation message (stderr)

printer.cpp: In function 'int main()':
printer.cpp:31:25: 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]
   31 |       for (int j = 0; j < words[i].length(); j++) {
      |                       ~~^~~~~~~~~~~~~~~~~~~
printer.cpp:33:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |        for (int k = 0; k < adj[pos].size(); k++) {
      |                        ~~^~~~~~~~~~~~~~~~~

• 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