Submission #1028076

#	Time	Username	Problem	Language	Result	Execution time	Memory
1028076		earlyamazon	Savez (COCI15_savez)	C++14	0 / 120	77 ms	47344 KiB

savez

#include <bits/stdc++.h>
using namespace std;

#define int long long

const int mn = 5e5+7;
const int mod1 = 1e9+7;
const int mod2 = 1e9+9;
const int p1 = 269;
const int p2 = 271;
int32_t n,wyn;
string t[mn];
vector<int> hpref[mn];
map<int32_t, int32_t> dp;
int pot[mn];

int32_t main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie();
    cin>>n;
    pot[0] = 1;
    for (int i = 1; i < mn; i++){
        pot[i] = pot[i-1]*p1%mod1;
    }
    for (int i = 0; i < n; i++){
        cin>>t[i];
        hpref[i].resize(t[i].size()+1);
        hpref[i][0] = 0;
        for (int j = 1; j <= (int)t[i].size(); j++){
            hpref[i][j] = (hpref[i].back()*p1+t[i][j-1])%mod1;
        }
        int32_t mx = 0;
        for (int j = 1; j <= (int)t[i].size(); j++){
            int h = hpref[i][j];
            if (h == (hpref[i][t[i].size()]-((hpref[i][t[i].size()-j]*pot[j])%mod1)+mod1)%mod1){
                mx = max(mx, dp[h]);
            }
        }
        mx++;
        wyn = max(wyn, mx);
        dp[hpref[i].back()] = mx;
        // cout<<hpref[i].size()<<" "<<hpref[i].back().first<<" "<<hpref[i].back().second<<" "<<mx<<"\n";
    }
    cout<<wyn<<"\n";
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 12
• Subtask 3: 0 / 12
• Subtask 4: 0 / 12
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