Hacker Cups and Balls

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

int main()
{
    int n, m;
    cin >> n >> m;

    vector<int> v(n);
    for(int i = 0; i < n; i++){
        int num;
        cin >> num;
        v[i] = num;
    }

    vector<pair<int, int>> c(m);
    for(int i = 0; i < m; i++){
        int a, b;
        cin >> a >> b;
        a--; b--;
        c[i] = {a, b};
    }
    int skipTo = 0;
    for(int i = m - 1; i >= 0; i--){
        int a = c[i].first;
        int b = c[i].second;
        if((a == 0 && b == n - 1) || (a == n - 1 && b == 0)){
            skipTo = i;
            break;
        }
    }

    for(int i = skipTo; i < m; i++){
        int a = c[i].first;
        int b = c[i].second;
        if(a > b){
            sort(v.begin() + b, v.begin() + a + 1);
            reverse(v.begin() + b, v.begin() + a + 1);
        }else{
            sort(v.begin() + a, v.begin() + b + 1);
        }
    }

    cout << v[n / 2];
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: TIME LIMIT EXCEEDED

Test 15

Verdict: TIME LIMIT EXCEEDED

Test 16

Verdict: TIME LIMIT EXCEEDED

Test 17

Verdict: TIME LIMIT EXCEEDED

Test 18

Verdict: TIME LIMIT EXCEEDED

Test 19

Verdict: TIME LIMIT EXCEEDED

Test 20

Verdict: TIME LIMIT EXCEEDED

Test 21

Verdict: TIME LIMIT EXCEEDED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: TIME LIMIT EXCEEDED

Test 24

Verdict: TIME LIMIT EXCEEDED

Test 25

Verdict: ACCEPTED

Test 26

Verdict: ACCEPTED