Submission

Score: 0

User: UNJE0o

Problemset: ห้องสมุดเมือง 3M

Language: cpp

Time: 0.003 second

Submitted On: 2026-10-12 19:49:49

#include <bits/stdc++.h>
#define en '\n'
using namespace std;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    
    int n,x,y,B,A;cin >> n;
    set<int>s;
    vector<int>v;
    for(int i = 0;i < n;i++){
        cin >> x >> y;
        for(int j = x;j < y;j++){
            B = s.size();
            s.insert(j);
            A = s.size();
            if(A!=B)v.push_back(j);
        }
    }

    sort(v.begin(),v.end());
    // cout << v.size()/2 - 1;
    cout << v[v.size()/2 - 1];

}