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Cod sursa(job #808772)
#include<cstdio>
#include<algorithm>
using namespace std;
int sume[1000000],a[110],i,j,n,k,l,u,s;
int cautare(int val)
{
int st=1,dr=u,m;
while(st<=dr)
{
m=(st+dr)/2;
if(sume[m]==val)
return 1;
if(val>sume[m])
st=m+1;
else
dr=m-1;
}
if(sume[m]==val) return 1;
return 0;
}
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=i;j<=n;j++)
for(k=j;k<=n;k++)
sume[++u]=a[i]+a[j]+a[k];
sort(sume+1,sume+u+1);
for(int ind=1;ind<=n;ind++)
if(cautare(s-sume[ind]))
{
for(i=1;i<=n;i++)
for(j=i;j<=n;j++)
for(k=j;k<=n;k++)
if(sume[ind]==a[i]+a[j]+a[k]) printf("%d %d %d",a[i],a[j],a[k]);
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-sume[ind]) printf(" %d %d %d",a[i],a[j],a[k]);
return 0;
}
return 0;
}