Submission #10786584


Source Code Expand

Copy
// includes
#include <bits/stdc++.h>
using namespace std;

// macros
#define pb emplace_back
#define mk make_pair
#define FOR(i, a, b) for(int i=(a);i<(b);++i)
#define rep(i, n) FOR(i, 0, n)
#define rrep(i, n) for(int i=((int)(n)-1);i>=0;i--)
#define irep(itr, st) for(auto itr = (st).begin(); itr != (st).end(); ++itr)
#define irrep(itr, st) for(auto itr = (st).rbegin(); itr != (st).rend(); ++itr)
#define whole(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define bit(n) (1LL<<(n))
// functions
template <typename T> void unique(T& c){c.erase(std::unique(c.begin(), c.end()), c.end());}
template <class T>bool chmax(T &a, const T &b){if(a < b){a = b; return 1;} return 0;}
template <class T>bool chmin(T &a, const T &b){if(a > b){a = b; return 1;} return 0;}
template <typename T> istream &operator>>(istream &is, vector<T> &vec){for(auto &v: vec)is >> v; return is;}
template <typename T> ostream &operator<<(ostream &os, const vector<T>& vec){for(int i = 0; i < vec.size(); i++){ os << vec[i]; if(i + 1 != vec.size())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const unordered_set<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T>& st){for(auto itr = st.begin(); itr != st.end(); ++itr){ os << *itr; auto titr = itr; if(++titr != st.end())os << " ";} return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p){os << "(" << p.first << ", " << p.second << ")"; return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os << "(" << itr->first << ", " << itr->second << ")"; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}
template <typename T1, typename T2> ostream &operator<<(ostream &os, const unordered_map<T1, T2> &mp){for(auto itr = mp.begin(); itr != mp.end(); ++itr){ os << "(" << itr->first << ", " << itr->second << ")"; auto titr = itr; if(++titr != mp.end())os << " "; } return os;}
//  types
using ll = long long int;
using P = pair<int, int>;
// constants
const int inf = 1e9;
const ll linf = 1LL << 50;
const double EPS = 1e-10;
const int mod = 1000000007;
const int dx[4] = {-1, 0, 1, 0};
const int dy[4] = {0, -1, 0, 1};
// io
struct fast_io{
  fast_io(){ios_base::sync_with_stdio(false); cin.tie(nullptr); cout << fixed << setprecision(20);}
} fast_io_;

struct tri{
  ll a, b, c;
  tri(){}
  tri(ll a, ll b, ll c): a(a), b(b), c(c){}
};

int main(int argc, char const* argv[])
{
  ll n, k; cin >> n >> k;
  if(2 * k > n + 1){
    cout << -1 << endl;
    return 0;
  }
  vector<tri> res; res.reserve(n);
  set<ll> st;
  rep(i, n)st.insert(k + 2 * n + i);
  for(ll i = 0; ; i++){
    if(k + i + n + k - 1 >= k + 2 * n)break;
    ll sum = k + i + k + i + n + k - 1;
    auto itr = st.lower_bound(sum);
    sum = *itr;
    st.erase(itr);
    res.pb(k + i, k + i + n + k - 1, sum);
  }
  for(ll i = n - k + 1; ; i++){
    if(i + k - 1 >= n + k - 1)break;
    ll sum = k + i + k + i + k - 1;
    auto itr = st.lower_bound(sum);
    sum = *itr;
    st.erase(itr);
    res.pb(k + i, k + i + k - 1, sum);
  }
  //assert(sz(res) == n);
  rep(i, n){
    cout << res[i].a << " " << res[i].b << " " << res[i].c << "\n";
  }
  cout << flush;
  return 0;
}

Submission Info

Submission Time
Task E - Non-triangular Triplets
User fumiphys
Language C++14 (GCC 5.4.1)
Score 700
Code Size 3925 Byte
Status AC
Exec Time 53 ms
Memory 9344 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 700 / 700
Status
AC × 2
AC × 38
Set Name Test Cases
Sample sample01.txt, sample02.txt
All sample01.txt, sample02.txt, in01.txt, in02.txt, in03.txt, in04.txt, in05.txt, in06.txt, in07.txt, in08.txt, in09.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in29.txt, in30.txt, in31.txt, in32.txt, in33.txt, in34.txt, sample01.txt, sample02.txt
Case Name Status Exec Time Memory
in01.txt AC 49 ms 8832 KB
in02.txt AC 48 ms 9088 KB
in03.txt AC 49 ms 8960 KB
in04.txt AC 50 ms 9216 KB
in05.txt AC 46 ms 8576 KB
in06.txt AC 45 ms 8448 KB
in07.txt AC 48 ms 8832 KB
in08.txt AC 45 ms 8704 KB
in09.txt AC 45 ms 8448 KB
in10.txt AC 51 ms 9216 KB
in11.txt AC 46 ms 8448 KB
in12.txt AC 47 ms 8576 KB
in13.txt AC 53 ms 9216 KB
in14.txt AC 45 ms 8192 KB
in15.txt AC 47 ms 8320 KB
in16.txt AC 49 ms 8960 KB
in17.txt AC 50 ms 9088 KB
in18.txt AC 40 ms 7424 KB
in19.txt AC 43 ms 8192 KB
in20.txt AC 50 ms 9088 KB
in21.txt AC 1 ms 256 KB
in22.txt AC 1 ms 256 KB
in23.txt AC 51 ms 9088 KB
in24.txt AC 1 ms 256 KB
in25.txt AC 25 ms 5120 KB
in26.txt AC 23 ms 4736 KB
in27.txt AC 11 ms 2560 KB
in28.txt AC 17 ms 3712 KB
in29.txt AC 1 ms 256 KB
in30.txt AC 1 ms 256 KB
in31.txt AC 51 ms 9344 KB
in32.txt AC 1 ms 256 KB
in33.txt AC 1 ms 256 KB
in34.txt AC 1 ms 256 KB
sample01.txt AC 1 ms 256 KB
sample02.txt AC 1 ms 256 KB