Submission #1104186

#	Time	Username	Problem	Language	Result	Execution time	Memory
1104186		Fikrat_Asadzadeh	Nivelle (COCI20_nivelle)	C++14	110 / 110	145 ms	844 KiB

nivelle

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

#define ll long long
#define FORI(i, n) for(ll i = 0; i < n; i++)
#define FOR(i, n) for(ll i = 1; i <= n; i++)
typedef vector<ll> vl;
typedef set<ll> setl;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define pll pair<ll, ll>
#define db double
#define nll cout << "\n"
#define nl "\n"
#define sync ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);

const ll INF = 1e9 + 7;
const int MAX = 3e5 + 5;
ll n, m, k;
// ll a, b;
ll a[MAX];
void solve(){
    cin >> n;
    string s;
    cin >> s;
    s = " " + s;
    ll l = 0, r = 0, best = 0;
    for(ll dis = 1; dis <= 26; dis++){
        map < char, ll > cnt;
        ll sum = 0, lx = 1;
        FOR(i, n){
            cnt[s[i]]++;
            if(cnt[s[i]] == 1)sum++;
            while(sum > dis){
                cnt[s[lx]]--;
                if(cnt[s[lx]] == 0)sum--;
                lx++;
            }
            if(l == 0 || best * (i - lx + 1) > sum * (r - l + 1)){
                l = lx, r = i, best = sum;
            }
        }
    }
    cout << l << " " << r << nl;
}
signed main(){
    sync;
    ll t = 1;
    // cin >> t;   
    while(t--) {
        solve();
    }
}

• Subtask 1: 7 / 7
• Subtask 2: 17 / 17
• Subtask 3: 13 / 13
• Subtask 4: 25 / 25
• Subtask 5: 48 / 48