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Cod sursa(job #496980)
#include<fstream>
#include<algorithm>
using namespace std;
ifstream f("loto.in");
ofstream g("loto.out");
int N;
struct suma
{ int val,x,y,z;
}v[1000001];
bool cmp(suma a,suma b)
{ return ( a.val<b.val );
}
bool search(int val,int &poz,int dr)
{ int mid,left,right;
left=1; right=dr;
while(left<=right)
{ mid=(left+right)/2;
if(v[mid].val==val) { poz=mid; return 1; }
if(v[mid].val>val) right=mid-1;
else left=mid+1;
}
return 0;
}
int main()
{ int S,i,j,k,x;
int a[101];
f>>N>>S;
for(i=1;i<=N;i++)
f>>a[i];
x=1;
for(i=1;i<=N;i++)
for(j=i;j<=N;j++)
for(k=j;k<=N;k++)
v[x].val=a[i]+a[j]+a[k] , v[x].x=a[i] , v[x].y=a[j] , v[x].z=a[k] , x++;
x--;
sort(v+1,v+x+1,cmp);
for(i=1;i<=N;i++)
if(search(S-v[i].val,j,x))
{ g<<v[i].x<<" "<<v[i].y<<" "<<v[i].z<<" "<<v[j].x<<" "<<v[j].y<<" "<<v[j].z; return 0; }
g<<-1;
f.close();
g.close();
return 0;
}