Submission

Score: 0

User: sulinx

Problemset: ห้องสมุดเมือง 3M

Language: cpp

Time: 0.002 second

Submitted On: 2026-02-14 10:28:00

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

int main(){
    int n, x, y;
    cin >> n;

    set<int> lib;
    for(int i = 0; i < n; i++){
        cin >> x >> y;
        for(int j = x; j < y; j++){
            lib.insert(j);
        }
    }
    auto it = lib.begin();
    advance(it, lib.size() / 2);
    cout << *it - 1;
}