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Cod sursa(job #857257)
#include <fstream>
using namespace std;
ifstream fo("energii.in");
ofstream go("energii.out");
int e[101],c[101],i,g,w,se;
void citire()
{
fo>>g>>w;
for(i=1;i<=g;i++)
{
fo>>e[i];
fo>>c[i];
}
fo.close();
}
void sortare()
{
int x,j;
for(i=1;i<g;i++)
for(j=i+1;j<=g;j++)
if(e[i]<e[j])
{
x=e[i];
e[i]=e[j];
e[j]=x;
x=c[i];
c[i]=c[j];
c[j]=x;
}
}
void sol()
{
int sw=0;
sortare();
for(i=1;i<=g;i++)
{
if(se<w)
se=se+e[i];
if(se>=w) {go<<c[i]; se=-1*c[i];sw=1;}
}
if(sw==0) go<<"-1";
}
int main()
{
citire();
sol();
go.close();
return 0;
}