제출 #1161583

#제출 시각아이디문제언어결과실행 시간메모리
1161583antonnDiversity (CEOI21_diversity)C++20
0 / 100
0 ms328 KiB
#include <bits/stdc++.h>

#define F first
#define S second
 
using namespace std;
using ll = long long;
using pi = pair<int, int>;
using vi = vector<int>;
 
template<class T> bool ckmin(T& a, T b) { return b < a ? a = b, true : false; }
template<class T> bool ckmax(T& a, T b) { return a < b ? a = b, true : false; }

const int N = 3e5 + 7;

int a[N];

ll get(vector<int> v) {
    int n = v.size();
    ll ans = 0;
    for (int i = 0; i < n; ++i) {
        set<int> s;
        for (int j = i; j < n; ++j) {
            s.insert(v[j]);
            ans += s.size();
        }
    }
    return ans;
}

int main() {
    ios::sync_with_stdio(0); cin.tie(0);
    
    int n, q; cin >> n >> q;
    for (int i = 1; i <= n; ++i) cin >> a[i];
    
    for (int i = 1; i <= q; ++i) {
        int l, r; cin >> l >> r;
        vector<int> v;
        for (int j = l; j <= r; ++j) v.push_back(a[j]);
        sort(v.begin(), v.end());
        
        vector<int> rv = v;
        reverse(rv.begin(), rv.end());
        
        ll ans = min(get(v), get(rv));
        cout << ans << "\n";
    }
}

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