Submission #696294

#	Time	Username	Problem	Language	Result	Execution time	Memory
696294		bachhoangxuan	Rima (COCI17_rima)	C++17	140 / 140	310 ms	144608 KiB

rima

// Judges with GCC >= 12 only needs Ofast
// #pragma GCC optimize("O3,no-stack-protector,fast-math,unroll-loops,tree-vectorize")
// MLE optimization
// #pragma GCC optimize("conserve-stack")
// Old judges
// #pragma GCC target("sse4.2,popcnt,lzcnt,abm,mmx,fma,bmi,bmi2")
// New judges. Test with assert(__builtin_cpu_supports("avx2"));
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
// Atcoder
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma")
#include<bits/stdc++.h>
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_real_distribution<> pp(0.0,1.0);
#define int long long
#define ld long double
#define pii pair<int,int>
#define piii pair<int,pii>
#define fi first
#define se second
const int inf=1e18;
const int mod=998244353;
const int mod2=1e9+7;
const int maxn=200005;
const int maxq=500005;
const int maxl=20;
const int maxa=1000005;
int power(int a,int n){
    int res=1;
    while(n){
        if(n&1) res=res*a%mod;
        a=a*a%mod;n>>=1;
    }
    return res;
}
int res=0;
struct node{
    node *c[26];
    node(){for(int i=0;i<26;i++) c[i]=nullptr;}
    int ok=0,dp=0;
    void cal(){
        int ans=ok,Max1=1,Max2=1;
        for(int i=0;i<26;i++){
            if(c[i]==nullptr) continue;
            c[i]->cal();
            if(c[i]->ok==0) continue;
            ans++;
            if(c[i]->dp>Max1){Max2=Max1;Max1=c[i]->dp;}
            else if(c[i]->dp>Max2) Max2=c[i]->dp;
        }
        dp=ans+Max1-1;
        res=max(res,ans+Max1+Max2-2);
    }

}*root;
void add(string s){
    node *cur=root;
    for(char ch:s){
        if(cur->c[ch-'a']==nullptr) cur->c[ch-'a']=new node();
        cur=cur->c[ch-'a'];
    }
    cur->ok=1;
}
void solve(){
    root=new node();
    int n;cin >> n;
    for(int i=1;i<=n;i++){
        string s;cin >> s;reverse(s.begin(),s.end());
        add(s);
    }
    root->cal();
    cout << res << '\n';
}
signed main(){
    //freopen("RIMA.INP","r",stdin);
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    int test=1;//cin >> test;
    while(test--) solve();
}

• Subtask 1: 140 / 140