Submission

Score: 0

User: lazybw_

Problemset: ห้องสมุดเมือง 3M

Language: cpp

Time: 0.003 second

Submitted On: 2025-07-05 11:53:17

#include <bits/stdc++.h>

using namespace std;
using ll = long double;
#define fll(x) for(ll i = 0; i < x; i++)
ll l, r, s = 0;

/* AHHHHHHHHHHHHHHHHHH */
int main() {ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); ll n; cin>>n; vector<ll> v; fll(n) cin>>l>>r, v.push_back((l+r-1)/2); for (auto k : v) s+=k; cout<<ceil(s/n);return 0;}