Submission #682817

#	Time	Username	Problem	Language	Result	Execution time	Memory
682817		iskhakkutbilim	Gift (IZhO18_nicegift)	C++14	0 / 100	274 ms	44500 KiB

nicegift

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

#define int long long
#define ff first
#define ss second
#define all(a) a.begin(), a.end()
const int M = 1e9 + 7;
const int N = 1e6 + 1;

main(){
   ios::sync_with_stdio(0);
   cin.tie(0); cout.tie(0);
	int n, k; cin >> n >> k;
	int a[n];
	for(int i = 0;i < n; i++){
		cin >> a[i];
	}
	set<int> st(a, a + n);
	if(st.size() == 1){
		if(n%k!= 0){
			cout << -1;
		}else{
			cout << n / k << '\n';
			deque<int> q;
			for(int i = 0;i < n; i++) q.push_back(i);
			for(int i = 0;i < n / k; i++){
				cout << a[0] << ' ';
				int c = k;
				while(c--){
					cout << q.front()+1 << ' ';
					q.pop_front();
				}
				cout << '\n';
			}
		}
		return 0;
	}
	return 0;
}

Compilation message (stderr)

nicegift.cpp:11:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main(){
      | ^~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 12
• Subtask 4: 0 / 19
• Subtask 5: 0 / 51