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Cod sursa(job #991968)
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <queue>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <fstream>
using namespace std;
const string file = "lacate";
const string infile = file + ".in";
const string outfile = file + ".out";
const int INF = 0x3f3f3f3f;
int N;
int main()
{
fstream fin(infile.c_str(), ios::in);
fin >> N;
fin.close();
fstream fout(outfile.c_str(), ios::out);
fout << (N* (N - 1))/2 << " " << (N - 1) << "\n";
vector<vector<int> > keys;
keys.resize(N);
for(int i = 0; i < N; i++)
keys[i].reserve(N - 1);
int contor = 1;
for(int i = 0; i < N; i++)
{
for(int j = i + 1; j < N; j++)
{
keys[i].push_back(contor);
keys[j].push_back(contor);
contor++;
}
}
for(int i = 0; i < N; i++)
{
copy(keys[i].begin(), keys[i].end(), ostream_iterator<int>(fout, " "));
fout << "\n";
}
fout.close();
}