Submission #223481

#	Time	Username	Problem	Language	Result	Execution time	Memory
223481		NONAME	Nivelle (COCI20_nivelle)	C++17	110 / 110	41 ms	768 KiB

nivelle

#include <bits/stdc++.h>
#include <time.h>
//#include <random>
#define sz(x) int(x.size())
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
#define N 100500 / 100
#define oo ll(1e16)
#define pii pair <int, int>
#define pll pair <ll, ll>
#define ft first
#define sd second
#define pb push_back
#define ppb pop_back
#define el '\n'
#define elf endl
#define base ll(1e9 + 7)
#define re return
#define nins 4294967295
using namespace std;
typedef long long ll;
typedef long double ld;

//mt19937 rnd(0);

void solve() {
    int n, lst[30] {}, res = 1, l = 1, r = 1;
    set <int> st;
    st.clear();
    string s;
    st.insert(0);

    cin >> n;
    cin >> s;

    for (int i = 1; i <= n; i++) {
        int c = s[i - 1] - 'a';

        if (lst[c])
            st.erase(-lst[c]);
        st.insert(-i);
        lst[c] = i;

        int cur = 0;

        for (set <int> :: iterator it = st.begin(); it != st.end(); it++) {
            if (cur && (cur * (r - l + 1) < (i + (*it)) * res)) {
                l = -(*it) + 1;
                r = i;
                res = cur;
            }
            cur++;
        }
    }

    cout << l << ' ' << r;
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #ifdef _LOCAL
        in("input.txt");

        int t = 1;
//        cin >> t;
        for (int i = 1; i <= t; i++) {
            cout << "Test #" << i << elf;

            clock_t start_time = clock();

            solve();

            cerr.precision(4); cerr << fixed;
            cerr << elf;
            cerr << "Time :: " << ld(clock() - start_time) / CLOCKS_PER_SEC << elf;

            cout << elf;
        }
    #else
        int t = 1;
//        cin >> t;

        while (t--) {
            solve();
            cout << el;
        }
    #endif
}

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