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Cod sursa(job #932416)
#include <fstream>
#include <algorithm>
using namespace std;
ifstream f("loto.in");
ofstream g("loto.out");
int a,b,i,j,k,m,n,an,bn,cn,w[200],l,sol,v[1000005];
bool CautaBin(int x)
{
int st=1,dr=l,mij;
while(st<=dr)
{
mij=(st+dr)/2;
if(x==v[mij])return true;
else
if(x<v[mij])dr=mij-1;
else st=mij+1;
}
return false;
}
int main()
{
f>>a>>b;
for (i=1;i<=a;++i)
f>>w[i];
for (i=1;i<=a;++i)
for (j=1;j<=a;++j)
for (k=1;k<=a;++k)
v[++l]=w[i]+w[j]+w[k];
sort(v+1,v+l+1);
for (i=1;i<=l;++i)
if(CautaBin(b-v[i]))
{
sol=v[i];
break;
}
if (sol)
{
for (i=1;i<=a;++i)
for (j=1;j<=a;++j)
for (k=1;k<=a;++k)
if (w[i]+w[j]+w[k]==sol)
{
g<<w[i]<<" "<<w[j]<<" "<<w[k]<<" ";
i+=a;j+=a;k+=a;
}
for (i=1;i<=a;++i)
for (j=1;j<=a;++j)
for (k=1;k<=a;++k)
if (w[i]+w[j]+w[k]==b-sol)
{
g<<w[i]<<" "<<w[j]<<" "<<w[k]<<" ";
i+=a;j+=a;k+=a;
}
g<<'\n';
return 0;
}
g<<"-1\n";
return 0;
}