Submission #635005

#	Time	Username	Problem	Language	Result	Execution time	Memory
635005		drkarlicio2107	Nice sequence (IZhO18_sequence)	C++14	100 / 100	1998 ms	84636 KiB

sequence

#include <bits/stdc++.h>
using namespace std;
int vis [400010];  long long int  c=0; long long int n, m;
vector < int > g [400010];
vector < long long int > ans;
long long int  o [400010];
int vis2 [400010];
int vis3 [400010];
void dfs ( int  x,  long long int  d){
	if (vis [x]) return ;
	vis [x]=1;
	if (x+n<=d){
		g [x+n].push_back (x); //dfs (x+n, d); 
	}
	if (x+m<=d){
		g [x].push_back (x+m); dfs (x+m, d);
	}
	return ;
}
void dfs2 ( int  v) {
    vis2[v]=1;
    for ( long long int  u : g[v]) {
        if (!vis2[u]) dfs2(u);
    }
    ans.push_back(v);
    return ;
}

void is_cycle ( long long int  x) {
	if (vis3 [x]==1){
		c=1; return ;
	}
	if (vis3 [x]) return ;
	vis3 [x]=1;
	for ( long long int  u : g[x]) is_cycle (u);
	vis3 [x]=2;
	return ;
}

void sort_top( long long int  d) {
    memset (vis2, 0, sizeof vis2); ans.clear();
    for ( long long int  i=0; i<=d; i++) {
        if (!vis2[i])
            dfs2(i);
    }
    reverse(ans.begin(), ans.end());
    return ;
}
 long long int  ok ( long long int  d){
	memset (vis, 0, sizeof vis);  
	memset (vis3, 0, sizeof vis3); 
	c=0;
	for ( long long int  i=0; i<400010; i++) g [i].clear();
	for ( long long int  i=0; i<=d; i++){
		if (!vis [i]) dfs (i, d);
	}
	for ( long long int  i=1; i<=d; i++) is_cycle (i);
	if (c) return 0;
	sort_top (d);
	return 1;
}
int  main(){
	 long long int  t; cin >> t;
	while (t--){
		ans.clear ();
		cin >> n >> m;
		ok (n+m-__gcd(n,m)-1);
		int lo=n+m-__gcd(n,m)-1;
		cout << lo << endl;
		if (lo==0) continue;
		 long long int  pr=0;
		for ( long long int  i=0; i<=lo; i++){
			if (ans [lo]==0) break;
			pr--;
		}
		for ( long long int  i=0; i<=lo; i++){
			//cout << ans [i] << " ";
			o [ans [i]]=pr; pr++;
		}
		for ( long long int  i=1; i<lo+1; i++){
			//cout << o [i] << "x";
			cout << o [i]-o [i-1] << " ";
		}
		cout << endl;
	}
	return 0;
}

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