#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main()
{
    ll n;
    cin >> n;
    ll mn = 1e9, mx = -1;
    while (n-- > 0)
    {
        ll a, b;
        cin >> a >> b;
        mn = min(a, mn);
        mx = max(b, mx);
        cout << mn + mx << endl;
    }

    return 0;
}