Submission #701339

#	Time	Username	Problem	Language	Result	Execution time	Memory
701339		fdnfksd	Rima (COCI17_rima)	C++14	14 / 140	212 ms	151828 KiB

rima

#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<int,int>
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=int;
const ll maxN=5e5+10;
const ll inf=1e18;
const ll mod=1e9+7;
struct TrieNode
{
    ll val;
    TrieNode* child[26];
    TrieNode()
    {
        val=0;
        for(int i=0;i<26;i++) child[i]=nullptr;
    }
};
TrieNode *root=new TrieNode();
void add(string s,ll val)
{
    auto p=root;
    ll n=s.size()-1;
    for(int i=1;i<n;i++)
    {
        if(p->child[s[i]-'a']==nullptr)
        {
            p->child[s[i]-'a']=new TrieNode();
        }
        p=p->child[s[i]-'a'];
    }
    p->val=max(p->val,val);
    for(int i=n;i<=n;i++)
    {
        if(p->child[s[i]-'a']==nullptr)
        {
            p->child[s[i]-'a']=new TrieNode();
        }
        p=p->child[s[i]-'a'];
    }
    p->val=max(p->val,val);
}
ll get(string s)
{
    auto p=root;
    ll ans=0;
    ll n=s.size()-1;
    for(int i=1;i<n;i++)
    {
        if(p->child[s[i]-'a']==nullptr)
        {
            p->child[s[i]-'a']=new TrieNode();
        }
        p=p->child[s[i]-'a'];
    }
    ans=max(ans,p->val);
    for(int i=n;i<=n;i++)
    {
        if(p->child[s[i]-'a']==nullptr)
        {
            p->child[s[i]-'a']=new TrieNode();
        }
        p=p->child[s[i]-'a'];
    }
    ans=max(ans,p->val);
    return ans;
}
ll n;
string s[maxN];
void solve()
{
    cin >> n;
    ll ans=0;
    for(int i=1;i<=n;i++)
    {
        cin >> s[i];
        reverse(s[i].begin(),s[i].end());
        s[i]=' '+s[i];
        ll x=get(s[i])+1;
        ans=max(ans,x);
        add(s[i],x);
    }
    cout << ans;
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Compilation message (stderr)

rima.cpp:9:14: warning: overflow in conversion from 'double' to 'll' {aka 'int'} changes value from '1.0e+18' to '2147483647' [-Woverflow]
    9 | const ll inf=1e18;
      |              ^~~~

• Subtask 1: 14 / 140