Submission #909921

#	Time	Username	Problem	Language	Result	Execution time	Memory
909921		daoquanglinh2007	Nice sequence (IZhO18_sequence)	C++17	20 / 100	2049 ms	4700 KiB

sequence

#include <bits/stdc++.h>
using namespace std;
 
#define int long long
#define isz(a) (int)(a).size()
 
const int NM = 4e5, LIM = 1e6;
 
int T, N, M, k;
int sum[NM+5];
bool vis[NM+5];

void dfs(int u){
	vis[u] = 1;
	if (u-N >= 0){
		sum[u-N] = sum[u]+LIM;
		dfs(u-N);
	}
	if (u+M <= k){
		sum[u+M] = sum[u]+LIM;
		dfs(u+M);
	}
}
 
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin >> T;
	while (T--){
		cin >> N >> M;
		if (N%M == 0){
			cout << N-1 << '\n';
			for (int i = 1; i < N; i++) cout << 1 << ' ';
			cout << '\n';
			continue;
		}
		if (M%N == 0){
			cout << M-1 << '\n';
			for (int i = 1; i < M; i++) cout << -1 << ' ';
			cout << '\n';
			continue;
		}
		k = N+M-__gcd(N, M)-1;
		memset(vis, 0, sizeof(vis));
		for (int i = 0; i <= k; i++)
			if (!vis[i]){
				sum[i] = 0;
				dfs(i);
			}
		cout << k << '\n';
		for (int i = 1; i <= k; i++){
			cout << (sum[i]-sum[i-1] == 0 ? 1 : sum[i]-sum[i-1]) << ' ';
		}
		cout << '\n';
	}
	return 0;
}

• Subtask 1: 6 / 6
• Subtask 2: 0 / 9
• Subtask 3: 14 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 14
• Subtask 6: 0 / 18
• Subtask 7: 0 / 24