Submission #888100

#	Time	Username	Problem	Language	Result	Execution time	Memory
888100		votranngocvy	Nivelle (COCI20_nivelle)	C++14	110 / 110	24 ms	952 KiB

nivelle

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

const int N = 1e5 + 5;
const int inf = 0x3f3f3f3f;
int a[N];

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++) {
        char x;
        cin >> x;
        a[i] = x - 'a';
    }
    double ans = inf;
    int L,R;
    for (int i = 1; i <= 26; i++) {
        vector<int>cnt(30,0);
        int l = 1,tmp = 0;
        for (int r = 1; r <= n; r++) {
            cnt[a[r]]++;
            if (cnt[a[r]] == 1) tmp++;
            while (tmp > i) {
                cnt[a[l]]--;
                if (cnt[a[l]] == 0) tmp--;
                l++;
            }
            if (tmp == i && (double)i / (double)(r - l + 1) < ans) {
                ans = (double)i / (double)(r - l + 1);
                L = l,R = r;
            }
        }
    }
    cout << L << " " << R << "\n";
}

Compilation message (stderr)

nivelle.cpp: In function 'int main()':
nivelle.cpp:37:30: warning: 'R' may be used uninitialized in this function [-Wmaybe-uninitialized]
   37 |     cout << L << " " << R << "\n";
      |                              ^~~~
nivelle.cpp:37:18: warning: 'L' may be used uninitialized in this function [-Wmaybe-uninitialized]
   37 |     cout << L << " " << R << "\n";
      |                  ^~~

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