Submission #485559

#	Time	Username	Problem	Language	Result	Execution time	Memory
485559		AkiYuu	Rima (COCI17_rima)	C++17	140 / 140	211 ms	78036 KiB

rima

#include <bits/stdc++.h>
#define task "GROUP"
#define ll long long
#define ld long double
#define pb(u) emplace_back(u)
#define ffw(i,a,b) for (ll i = a; i <= b; i++)
#define fbw(i,b,a) for (ll i = b; i >= a; i--)
#define adj(v,adj,u) for (auto v : adj[u])
#define rep(i,a) for (auto i : a)
#define reset(a) memset(a, 0, sizeof(a))
#define sz(a) a.size()
#define all(a) a.begin(),a.end()

using namespace std;

inline namespace FastIO {
	const int BSZ = 1<<15;
	char ibuf[BSZ]; int ipos, ilen;
	char nc() { //
		if (ipos == ilen) {
			ipos = 0; ilen = fread(ibuf,1,BSZ,stdin);
			if (!ilen) return EOF;
		}
		return ibuf[ipos++];
	}
	void readstr(string& x) {
		char ch; while (isspace(ch = nc()));
		do { x += ch; } while (!isspace(ch = nc()) && ch != EOF);
	}

	template<class T> void readnum(T& x){
		char ch; int sgn = 1;
		while (!isdigit(ch = nc())) if (ch == '-') sgn *= -1;
		x = ch-'0'; while (isdigit(ch = nc())) x = x*10+(ch-'0');
		x *= sgn;
	}
}

const int mxn = 1e6 + 5;
typedef pair<ll, ll> ii;

void fastio(){
	ios_base::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
//	freopen(task".inp", "r", stdin);
//	freopen(task".out", "w", stdout);
}


//                       _oo0oo_
//                      o8888888o
//                      88" . "88
//                      (| -_- |)
//                      0\  =  /0
//                    ___/`---'\___
//                  .' \|     |// '.
//                 / \|||  :  |||// \
//                / _||||| -:- |||||- \
//               |   | \\  -  /// |   |
//               | \_|  ''\---/''  |_/ |
//               \  .-\__  '-'  ___/-. /
//             ___'. .'  /--.--\  `. .'___
//          ."" '<  `.___\_<|>_/___.' >' "".
//         | | :  `- \`.;`\ _ /`;.`/ - ` : | |
//         \  \ `_.   \_ __\ /__ _/   .-` /  /
//     =====`-.____`.___ \_____/___.-`___.-'=====
//

int trie[3000006][30];
ll cnt = 0;
bool IsEnd[3000006];
int n;
int res = 0;

void add(string s){
    int node  = 0;
    for (char c : s){
        int x = c - 'a';
        if (trie[node][x] == 0 ) trie[node][x] = ++cnt;
        node = trie[node][x];
    }
    IsEnd[node] = 1;
}

int dp[3000006];

void dfs(int u){
    int v, max1 = 0,max2 = 0,child = 0;
    ffw(i,'a' - 'a', 'z' - 'a'){
        v = trie[u][i];
        if ( v == 0 ) continue;
        dfs(v);
        if (IsEnd[v]){
            child++;
            if (dp[v] >= max1){
                max2 = max1;
                max1 = dp[v];
            } else{
                if (dp[v] > max2)
                    max2 = dp[v];
            }
        }
    }
    dp[u] = max1 + child;
    res = max(res, max1 + max2 + child + IsEnd[u]);
}

void solve(){
    int n;
    cin >> n;
    ffw(i,1,n) {
        string s;
        cin >> s;
        reverse(all(s));
        add(s);
    }
    dfs(0);
    cout << res;
}

int main(){
	fastio();
	solve();
}

Compilation message (stderr)

rima.cpp:57:1: warning: multi-line comment [-Wcomment]
   57 | //                 / \|||  :  |||// \
      | ^

• Subtask 1: 140 / 140