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Cod sursa(job #131563)
#include <iostream>
#include <fstream>
#include <vector>
#include <set>
#include <algorithm>
using namespace std;
int S(0),
N(0);
vector<int> v;
int ord[1000000];
void print_back(int s, ostream &os) {
for (int i(0); i < N; ++i)
for (int j(0); j < N; ++j)
for (int k(0); k < N; ++k)
if (v[i] + v[j] + v[k] == s) {
os << v[i] << " " << v[j] << " " << v[k];
return;
}
}
int main(int argc, char *argv[]) {
FILE *fin = fopen("loto.in", "r");
fscanf(fin, "%d %d", &N, &S);
v.reserve(N);
for (int i(0); i < N; ++i)
fscanf(fin, "%d", &v[i]);
fclose(fin);
sort(v.begin(), v.end());
set<int> sume;
int n(0);
for (int i(0); i < N; ++i) {
for (int j(0); j < N; ++j) {
for (int k(0); k < N; ++k) {
if (sume.find(v[i] + v[j] + v[k]) == sume.end()) {
sume.insert(v[i] + v[j] + v[k]);
ord[n++] = v[i] + v[j] + v[k];
}
}
}
}
//for (set<int>::iterator it = sume.begin(); it != sume.end(); ++it) {
for (int i(0); i < n; ++i) {
if (sume.find(S - ord[i]) != sume.end()) {
ofstream fout("loto.out");
print_back(ord[i], fout);
fout << " ";
print_back(S - ord[i], fout);
fout << endl;
fout.close();
return 0;
}
//sume.erase(it);
}
ofstream fout("loto.out");
fout << -1 << endl;
fout.close();
return 0;
}