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#include <iostream>
#include <vector>
#include <utility>
#include <set>
#include <algorithm>

using namespace std;

bool comp(pair <int, pair<int, int>> a, pair <int, pair<int, int>> b) {
    if (a.second.second > b.second.second)
        return true;
    else if (a.second.second < b.second.second)
        return  false;
    else {
        if (a.second.first < b.second.first)
            return true;
        return false;
    }
}

int main() {

    int n;

    cin >> n;

    vector <pair < int, pair<int, int>>> v(n);

    for (int i = 0; i < n; i++) {
        int a, b;
        cin >> a >> b;

        v[i] = { i, {a, b} };
    }

    sort(v.begin(), v.end(), comp);


    set <int> s;

    for (int i = 1; i < 200001; i++)
        s.insert(i);

    vector <int> curr(n, -1);


    vector <int> st;
    long long ans = 0;
    //int c = 0;

    for (int i = 0; i < n; i++) {
        auto t = s.lower_bound(v[i].second.first);
        if (*t == v[i].second.first) {
            //c++;
            s.erase(v[i].second.first);
            curr[v[i].first] = t&;
            //st.push_back(v[i].first);
            v[i].first = -1;
            continue;
        }
        else if (t == s.begin()) {
            if (*t == v[i].second.first) {
                //c++;
                s.erase(v[i].second.first);
                curr[v[i].first] = *t;
                //st.push_back(v[i].first);
                v[i].first = -1;
            }
            else {
                ans += v[i].second.second;
            }
        }
        else {
            t--;
            s.erase(*t);
            curr[v[i].first] = *t;
            //st.push_back(v[i].first);
            v[i].first = -1;
        }
    }

    cout << ans << endl;


    for (int i = 0; i < n; i++)
        cout << curr[i] << " ";


    return 0;
}