Submission #868766

#	Time	Username	Problem	Language	Result	Execution time	Memory
868766		Pring	Nivelle (COCI20_nivelle)	C++14	110 / 110	56 ms	1620 KiB

nivelle

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

#define int long long
#define fs first
#define sc second
#define mp make_pair
typedef pair<int, int> pii;
typedef pair<pii, int> p3i;

const int MXN = 100005, MXC = 26;
int n;
string s;
deque<int> dq[MXC];
pii ans;
double x = 3000000000000000000.0;

void miku() {
    cin >> n >> s;
    for (int i = 0; i < n; i++) {
        dq[s[i] - 'a'].push_back(i);
    }
    for (int i = 0; i < MXC; i++) dq[i].push_back(-1);
    for (int i = 0; i < n; i++) {
        vector<int> v;
        for (int j = 0; j < MXC; j++) if (dq[j].front() != -1) v.push_back(dq[j].front());
        v.push_back(n);
        sort(v.begin(), v.end());
        // cout << i << endl;
        // for (auto &j : v) cout << j << ' ';
        // cout << endl;
        for (int j = 1; j < v.size(); j++) {
            double xx = (double) j / (v[j] - i);
            if (xx < x) {
                x = xx;
                ans = mp(i, v[j]);
            }
        }
        dq[s[i] - 'a'].pop_front();
    }
    cout << ans.fs + 1 << ' ' << ans.sc << endl;
}

int32_t main() {
    cin.tie(0) -> sync_with_stdio(false);
    miku();
    return 0;
}

Compilation message (stderr)

nivelle.cpp: In function 'void miku()':
nivelle.cpp:32:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |         for (int j = 1; j < v.size(); j++) {
      |                         ~~^~~~~~~~~~

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