Submission #100202

#	Time	Username	Problem	Language	Result	Execution time	Memory
100202		sofhiasouza	Rima (COCI17_rima)	C++14	42 / 140	710 ms	30772 KiB

rima

#include <bits/stdc++.h>
#define MAXN 500010
#define pb push_back
#define inf 0x3f3f3f3f
using namespace std;

int n, dp[MAXN], sizes[3000010];
vector < string > vet;

inline bool cmp(string a, string b)
{
	if(a.size() > b.size()) return true;
	else if(a.size() < b.size()) return false;
	return a < b;
}

inline int func(int i)
{
	//cout << i << endl;
	if(i == n-1) return 1;
	if(dp[i] != -1) return dp[i];

	string eu = vet[i];
	eu.pop_back();
	int r = 1;
	if(vet[i+1].size() - 1 == eu.size())
	{
		string k = vet[i+1];
		k.pop_back();
		if(k == eu) r = func(i+1) + 1;
		//cout << k << endl;
	}
	int ind = sizes[eu.size()];
	//cout << ind << endl;
	if(ind != -1 and vet[ind].size() == eu.size())
	{
		if(vet[ind] == eu) r = max(r, func(ind) + 1);
	}
	return dp[i] = r;
}

int main()
{
	cin >> n;
	memset(dp, -1, sizeof dp);
	memset(sizes, -1, sizeof sizes);
	for(int i = 0 ; i < n ; i++)
	{
		string s;
		cin >> s;
		reverse(s.begin(), s.end());
		vet.pb(s);
	}
	sort(vet.begin(), vet.end(), cmp);
	for(int i = 0 ; i < n ; i++)
	{
		//cout << vet[i] << endl;
		if(sizes[vet[i].size()] == -1) sizes[vet[i].size()] = i;
	}
	//cout << sizes[3] << ' ' << sizes[4] << endl;
	int resp = 0;
	for(int i = 0 ; i < n ; i++)
	{
		resp = max(resp, func(i));
	//	cout << i << ' ' << resp << endl;
	}
	cout << resp << endl;
}

• Subtask 1: 42 / 140