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Cod sursa(job #862673)
#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 sol()
{
int mi=0,sw=0,s=0,s2=0;
for(i=1;i<=g;i++)
{
if(e[i]>=w) {mi=c[i]; sw=1;}
else
s=s+e[i];
s2=s2+c[i];
if(s>=w) {mi=s2; sw=1; s=0; s2=0;}
if(mi<c[i]) mi=c[i];
}
if(sw==0) go<<"-1";
else
go<<mi;
}
int main()
{
citire();
sol();
go.close();
return 0;
}