Submission #176036

#TimeUsernameProblemLanguageResultExecution timeMemory
176036LightningGift (IZhO18_nicegift)C++14
0 / 100
366 ms22636 KiB
//#pragma comment(linker, "/stack:200000000") //#pragma GCC optimize("O3") //#pragma GCC optimize("Ofast") //#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") //#pragma GCC optimize("unroll-loops") #include <iostream> #include <algorithm> #include <vector> #include <cmath> #include <set> #include <map> #include <iomanip> #include <stack> #include <queue> #include <deque> //#include <ext/pb_ds/assoc_container.hpp> //#include <ext/pb_ds/tree_policy.hpp> using namespace std; //using namespace __gnu_pbds; typedef long long ll; typedef pair <int, int> pii; //#define ordered_set tree<pii, null_type,less<pii>, rb_tree_tag,tree_order_statistics_node_update> // order_of_key (k) : Number of items strictly smaller than k . // find_by_order(k) : K-th element in a set (counting from zero). #define sz(a) (int)a.size() #define all(a) a.begin(), a.end() #define pb push_back #define ppb pop_back #define mkp make_pair #define F first #define S second #define show(a) cerr << #a <<" -> "<< a <<"\n" #define fo(a, b, c, d) for(int (a) = (b); (a) <= (c); (a) += (d)) #define foo(a, b, c ,d) for(int (a) = (b); (a) >= (c); (a) -= (d)) //#define int ll const int N = 1e6 + 5; int n, k; ll a[N]; int main () { ios_base::sync_with_stdio(false); cin.tie(NULL); cin >> n >> k; for(int i = 1; i <= n; ++i) { cin >> a[i]; } if(n % k != 0) { cout << -1; return 0; } cout << n / k <<"\n"; for(int i = 1; i <= n; i += k) { cout << a[i] <<" "; for(int j = i; j <= i + k - 1; ++j) { cout << j <<" "; } cout << "\n"; } return 0; } /* If you only do what you can do, You will never be more than you are now! ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ We must all suffer from one of two pains: the pain of discipline or the pain of regret. The difference is discipline weighs grams while regret weighs tons. */
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