Submission #844469

#	Time	Username	Problem	Language	Result	Execution time	Memory
844469		vjudge1	Nivelle (COCI20_nivelle)	C++17	110 / 110	27 ms	712 KiB

nivelle

/* Author : Mychecksdead  */
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
const int N = 1e6+100, M = 1e5+10, K = 18;


int n, ansl = 0, ansr = 0;
string s;
double best = 2;
void solve(){
  cin >> n >> s;
  s = " " + s;
  for(int j = 1; j <= 26; ++j){
    vector<int> a(26);
    int c = 0, l = 1;
    for(int i = 1; i <= n; ++i){
      if(a[s[i] - 'a'] == 0) c++;
      a[s[i] - 'a']++;
      while(c > j){
        a[s[l] - 'a']--;
        if(a[s[l] - 'a'] == 0) c--;
        l++;
      }
      if((double) c / (i-l+1) < best){
        best = (double) c / (i-l+1);
        ansl = l;
        ansr = i;
      }
    }
  }
  cout << ansl << ' ' << ansr;
}


int main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int tt = 1, aa;
  // freopen("in.txt", "r", stdin);
  // freopen("out.txt", "w", stdout);
  // cin >> tt;
  while(tt--){
    solve();
    // en;
  }
  cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
  return 0;
}

Compilation message (stderr)

nivelle.cpp: In function 'int main()':
nivelle.cpp:43:15: warning: unused variable 'aa' [-Wunused-variable]
   43 |   int tt = 1, aa;
      |               ^~

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