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#include<bits/stdc++.h>
using namespace std;
bool cmp(tuple<int, int, int>p1, tuple<int, int, int>p2)
{
return get<2>(p1) > get<2>(p2);
}
int main()
{
long long int N;
long long int M;
cin >> N >> M;
vector<tuple<int, int,int>>v;
for (long long int i = 0; i < N; i++)
{
int A, B;
cin >> A >> B;
v.push_back(tuple<int,int,int>(A,B,A-B));
}
long long int sum = 0;
long long int count = 0;
sort(v.begin(), v.end(), cmp);
for (vector<tuple<int, int,int>>::iterator it = v.begin(); it != v.end(); it++)
{
&nbs...
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