Submission #960543

#	Time	Username	Problem	Language	Result	Execution time	Memory
960543		LM1	Rima (COCI17_rima)	C++14	70 / 140	365 ms	218752 KiB

rima

#include <bits/stdc++.h>
#define int long long
using namespace std;
const int N=5e5+5,M=3e6+5;
int t,n,dp[M],fix[M][26],ans=1,cn,cnt[M];
vector<int>v[M];
string s;
void add(string s){
	int cur=0;
	for(int i=0;i<(int)s.size();i++){
		int c=s[i]-'a';
		if(!fix[cur][c]){
			cn++;
			fix[cur][c]=cn;
			v[cur].push_back(fix[cur][c]);
		}
		cur=fix[cur][c];
	}
	cnt[cur]++;
}
void dfs(int st,int p){
	if(v[st].size()==0 and st>0){
		dp[st]=1;
		return;
	}
	int mx=0;
	vector<int>v1;
	for (int i:v[st]){
		if (i==p)continue;
		dfs(i,st);
		mx=max(mx,dp[i]);
		if(dp[i])v1.push_back(dp[i]);
	}
	sort(v1.begin(),v1.end());
	if(v1.size()>=2)ans=max(ans,v1.back()+v1[v1.size()-2]+(int)v1.size()-2);
	ans=max(ans,mx+(int)v1.size()-(!cnt[st]));
	if(cnt[st])dp[st]=mx+1+v1.size()-min((int)v1.size(),(int)1);
	else dp[st]=0;
}
main(){
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>s;
		reverse(s.begin(),s.end());
		add(s);
	}
	dfs(0,0);
	cout<<ans;
}

Compilation message (stderr)

rima.cpp:40:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   40 | main(){
      | ^~~~

• Subtask 1: 70 / 140