Submission #1104185

#	Time	Username	Problem	Language	Result	Execution time	Memory
1104185		qrn	Nivelle (COCI20_nivelle)	C++14	110 / 110	151 ms	768 KiB

nivelle

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

template<class ISqr, class T>
ISqr& operator>>(ISqr& is, vector<T>& v) { for (auto& x : v) is >> x; return is; }

#define SPEED                     \
    ios_base::sync_with_stdio(0); \
    cin.tie(NULL);                \
    cout.tie(NULL);

template <typename T>
void show(vector<T> &v) {
  for (T i : v) {
    cout << i << ' ';
  }
  cout << endl;
}
 

#define pb push_back
#define ins insert
#define fi first
#define se second
 
#define endl "\n"
#define ALL(x) x.begin(), x.end()
#define sz(x) x.size()
#define int long long
#define _ << " " <<
#define no cout << "No" << endl;
#define yes cout << "Yes" << endl;
#define impos cout << -1 << endl;

#define vi vector<int>
#define pii pair<int,int>
#define vpii vector<pii>

const int inf = 2e18;
const int sze = 5005;


void solve() {                          
    int n; string s;
    cin >> n >> s;
    s = '$' + s;
    int l = 0, r = 0, ans = 0;
    for(int sze = 1; sze <= 26; sze++) {
        map<int,int>cnt;
        int cur = 0, curl = 1 ;
        for(int i = 1; i <= n; i++) {
            cnt[s[i]]++;
            if(cnt[s[i]] == 1) cur++;

            while(cur > sze) {
                cnt[s[curl]]--;
                if(cnt[s[curl]] == 0) cur--;
                curl++;
            }

            if(ans * (i - curl + 1) > cur * (r - l + 1) || l == 0) {
                l = curl; r = i; ans = cur;
            }
        }
    }
    cout << l << " " << r << endl;
}

signed main(){
    SPEED;
    int t = 1;
    // cin >> t;
    for(int cs = 1; cs <= t; cs++) {
        solve();
    }
}

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