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Cod sursa(job #446604)
#include <stdio.h>
#include<algorithm>
using namespace std;
long i,j,k,n,nv,A[102],v[1000002],ok,S;
long BS(long x,long L,long R)
{
long m=(L+R)/2;
if(L<R)
{
if(x<v[m]) return BS(x,L,m);
else
if(v[m]<x) return BS(x,m+1,R);
else return 1;
}
else return 0;
}
void afisare(long sum)
{
long i,j,k,ok;
freopen("loto.out","w",stdout);
ok=1;
for(i=1;i<=n;i++)
{
for(j=i;j<=n;j++)
{
for(k=j;k<=n;k++)
if(A[i]+A[j]+A[k]==sum)
{
ok=0;
printf("%ld %ld %ld ",A[i],A[j],A[k]);
break;
}
if(ok==0) break;
}
if(ok==0) break;
}
ok=1;
for(i=1;i<=n;i++)
{
for(j=i;j<=n;j++)
{
for(k=j;k<=n;k++)
if(A[i]+A[j]+A[k]==S-sum)
{
ok=0;
printf("%ld %ld %ld\n",A[i],A[j],A[k]);
break;
}
if(ok==0) break;
}
if(ok==0) break;
}
}
int main()
{
freopen("loto.in","r",stdin);
scanf("%ld%ld",&n,&S);
for(i=1;i<=n;i++)
scanf("%ld",&A[i]);
nv=0;
for(i=1;i<=n;i++)
for(j=i;j<=n;j++)
for(k=j;k<=n;k++)
v[++nv]=A[i]+A[j]+A[k];
sort(v+1,v+nv+1);
ok=0;
v[++nv]=S;
for(i=1;i<=nv;i++)
if(v[i]<=S-v[i])
{
ok=BS(S-v[i],i,nv);
if(ok==1)
{
afisare(v[i]);
return 0;
}
}
else
{
freopen("loto.out","w",stdout);
printf("-1\n");
return 0;
}
return 0;
}