Submission #305328

#	Time	Username	Problem	Language	Result	Execution time	Memory
305328		FlashGamezzz	Rima (COCI17_rima)	C++17	28 / 140	618 ms	89936 KiB

rima

#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <fstream>
#include <algorithm>
#include <string>
#include <utility>
#include <vector>
#include <queue>

using namespace std;


int lets[1000000][26] = {}, inds[1000000] = {}, par[1000000], dp[500000] = {}, winds[500000], sz = 1, ind, ans = 0;
vector<string> strs;
string s;

void add(int c, int i){
	if (i == s.length()){
		inds[c] = ind+1; winds[ind] = c;
		return;
	}
	int l = int(s[s.length()-i-1])-97;
	if (lets[c][l] == 0){
		lets[c][l] = sz; par[sz] = c, sz++;
	}
	add(lets[c][l], i+1);
}
bool comp(string a, string b){
	if (a.length() == b.length()){
		return a < b;
	}
	return a.length() < b.length();
}

int main(){
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	int n; cin >> n;
	for (int i = 0; i < n; i++){
		string s; cin >> s;
		strs.push_back(s);
	}
	sort(strs.begin(), strs.end(), comp);
	for (int i = 0; i < n; i++){
		s = strs[i]; ind = i;
		add(0, 0);
	}
	dp[0] = 1;
	for (int i = 1; i < n; i++){
		int pi = par[winds[i]], fr = -1;
		dp[i] = 1;
		if (inds[pi] > 0){
			fr = inds[pi]-1;
		}
		for (int j = 0; lets[pi][j] != winds[i]; j++){
			if (inds[lets[pi][j]] > 0){
				fr = inds[lets[pi][j]]-1;
			}
		}
		if (fr > -1){
			dp[i] += dp[fr];
		}
		ans = max(ans, dp[i]);
	}
	cout << ans << endl;
}

Compilation message (stderr)

rima.cpp: In function 'void add(int, int)':
rima.cpp:19:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |  if (i == s.length()){
      |      ~~^~~~~~~~~~~~~

• Subtask 1: 28 / 140