# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
334960 | 2020-12-10T13:02:15 Z | amunduzbaev | Nice sequence (IZhO18_sequence) | C++14 | 0 ms | 0 KB |
#include <bits/stdc++.h> using namespace std; #define ff first #define ss second #define pb push_back #define mp make_pair #define ub upper_bound #define lb lower_bound #define ll long long #define ld long double #define pii pair<int, int> #define sz(x) (int)x.size() #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(),x.rend() #define prc(n) fixed << setprecision(n) #define fastios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0); #define pi acos(-1); const int inf = 1e9 + 7; const int N = 1e6 + 5; int len, n, m, pref[N]; bool vis[N]; vector<int>top; void dfs(int v){ vis[v] = 1; if(v - m >= 0 && !vis[v - m]) dfs(v - m); if(v + n <= len && !vis[v + n]) dfs(v + n); top.push_back(v); } bool check(int x){ len=x; top.clear(); for(int i = 0; i <= len; i++) vis[i] = 0; for(int i = 0; i <= len; i++) if(!vis[i]) dfs(i); for(int i = 0; i <= len; i++) pref[ top[i] ] = i; for(int i = 0; i <= len; i++){ if(i - m >= 0 && pref[i] <= pref[i - m]) return false; if(i + n <= len && pref[i] <= pref[i + n]) return false; } return true; } void solve(){ scanf("%d %d", &n, &m); int l = 0, r = 400000; while(l < r){ int mid = (l+r+1) >> 1; if(check(mid)) l = mid; else r = mid-1; } check(l); printf("%d\n", l); if(l){ for(int i=1;i<=l;i++) pritnf("%d ", pref[i] - pref[i-1]); printf("\n"); } return; } int main(){ int t; scanf("%d", &t); while(t--) solve(); return 0; }