#include <algorithm>
#include <utility>
#include <vector>
using namespace std;

bool less_p (pair <int, int> a, pair <int, int> b) {
    return a.second > b.second;
}

int main () {
    vector <pair <int, int> > p;
    sort (p.begin (), p.end (), less_p);

    
    return 0;
}