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Cod sursa(job #168978)
#include<stdio.h>
#include<stdlib.h>
#define NMAX 101
int n;
int S, v[NMAX], trei[NMAX * NMAX * NMAX];
int i,j,k,st=1,dr;
void pivot(int s,int d,int &m)
{
int ps=0,pd=1,aux;
while(s<d)
{if(trei[s]>=trei[d]) {aux=trei[s]; trei[s]=trei[d]; trei[d]=aux;
aux=ps; ps=pd; pd=aux;} s+=ps; d-=pd;}
m=s;}
int Q_Sort(int s,int d)
{ int m;
if(s<d) {pivot(s,d,m);
Q_Sort(s,m-1);
Q_Sort(m+1,d);} }
int scout(int val)
{
for(i=1; i<=n; i++)
for(j=1; j<=n; j++)
for(k=1; k<=n; k++)
if(v[i] + v[j] + v[k] == val)
{ printf("%d %d %d ",v[i],v[j],v[k]);
return 0; }
return -1;}
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",&v[i]);
for(i=1; i<=n; i++)
for(j=1; j<=n; j++)
for(k=1; k<=n; k++) trei[++dr] = v[i] + v[j]+ v[k];
Q_Sort(1,dr);
while(n)
{
for(; trei[st] + trei[dr] > S && st<dr; dr--);
if( trei[st] + trei[dr] == S)
{ scout(trei[st]); scout(trei[dr]); printf("\n"); return 0;}
if(st==dr) break;
for(; trei[st] + trei[dr] < S && st<dr; st++);
}
printf("-1\n");
return 0; }