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Cod sursa(job #228754)
#include<cstdio>
#include<algorithm>
using namespace std;
int a[101],k,i,n,s,sum[1000001],j,l=1,mid,st,dr;
struct poz{int sum,x,y,z;}p[1000001];
bool operator<(const poz &a, const poz &b)
{ return (a.sum<b.sum);}
int main()
{ freopen("loto.in","r",stdin);
freopen("loto.out","w",stdout);
scanf("%d%d",&n,&s);
for(i=1;i<=n;i++)
scanf("%d",&a[i]);
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
for(k=1;k<=n;k++)
p[l].sum=a[i]+a[j]+a[k],
p[l].x=i,p[l].y=j,p[l++].z=k;
l--;
sort(p,p+l);
for(i=1;i<=l;i++)
{ st=1,dr=l;
while(st<=dr)
{ mid=(st+dr)/2;
if(p[i].sum+p[mid].sum==s)
{ printf("%d %d %d %d %d %d",a[p[i].x],a[p[i].y],a[p[i].z],a[p[mid].x],a[p[mid].y],a[p[mid].z]);
return 0;
}
else if(p[i].sum+p[mid].sum>s)
dr=mid-1;
else
st=mid+1;
}
}
printf("-1");
return 0;
}