Submission #464824

#	Time	Username	Problem	Language	Result	Execution time	Memory
464824		TheScrasse	Nivelle (COCI20_nivelle)	C++17	110 / 110	44 ms	620 KiB

nivelle

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

#define nl "\n"
#define nf endl
#define ll long long
#define pb push_back
#define _ << ' ' <<

#define INF (ll)1e18
#define mod 998244353
#define maxn 100010

ll i, i1, j, k, k1, t, n, m, res, flag[10], a, b;
ll l, r, f[36];
array<ll, 3> rs;
string s;

array<ll, 3> mxx(array<ll, 3> a, array<ll, 3> b) {
    if (a[0] * (b[2] - b[1] + 1) < b[0] * (a[2] - a[1] + 1)) return a;
    return b;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    #if !ONLINE_JUDGE && !EVAL
        ifstream cin("input.txt");
        ofstream cout("output.txt");
    #endif

    cin >> n >> s; s = '#' + s; rs = {1, 0, 0};

    for (i = 1; i <= 26; i++) {
        for (j = 0; j <= 25; j++) f[j] = 0;
        l = 1; r = 0; k = 0;
        while (l <= n) {
            if (r == n || k > i) {
                m = (ll)s[l] - 'a';
                f[m]--; l++;
                if (f[m] == 0) k--;
            } else {
                r++; m = (ll)s[r] - 'a';
                f[m]++;
                if (f[m] == 1) k++;
            }
            if (k <= i) rs = mxx(rs, {i, l, r});
        }
    }

    cout << rs[1] _ rs[2] << nl;

    return 0;
}

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