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Cod sursa(job #141072)
#include<fstream>
#include<vector>
#include<algorithm>
using namespace std;
int n,m,i,j;
pair<int,int> a[100001];
pair<int,int> res;
bool isrez(int mij,pair<int,int> &res)
{
int nr=0,m1=0;
for(i=0;i<n && m1<m;++i)
{
j=0;
while(j+2*a[i].second<=mij && m1<m){j+=2*a[i].second;m1+=a[i].first;}
if(j) nr++;
}
if(m1<m) return false;
res.first=mij;
res.second=nr;
return true;
}
pair<int,int> b_search(int i,int j)
{
if(i>j) return make_pair(0,0);
pair<int,int> res;
int mij=(i+j)/2;
if(isrez(mij,res)){
pair<int,int> res2;
res2=b_search(i,mij-1);
if(res2.first==0) return res;
else return res2;}
else
return b_search(mij+1,j);
}
int main()
{
ifstream f("garaj.in");
ofstream g("garaj.out");
f>>n>>m;
for(i=0;i<n;++i)
f>>a[i].first>>a[i].second;
sort(&a[0],&a[n]);
res=b_search(1,1000);
g<<res.first<<" "<<res.second<<endl;
g.close();
}