Submission #879416

#	Time	Username	Problem	Language	Result	Execution time	Memory
879416		dimashhh	Nice sequence (IZhO18_sequence)	C++17	76 / 100	1205 ms	56948 KiB

sequence

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e6 + 10, MOD = 998244353;
#define int long long
int timer = 1,pref[N],n,m,used[N];
vector<int> g[N],ord;
bool ok = false;
void dfs(int v){
    used[v] = 1;
    for(int to:g[v]){
        if(used[to] == 1){
            ok = false;
        }
        if(!used[to]){
            dfs(to);
        }
    }
    used[v] = 2;
    ord.push_back(v);
}
bool can(int len){
    
    for(int i = 1;i <= len; i++){
        if(i - m >= 0){
            g[i - m].push_back(i);
        }
        if(i - n >= 0){
            g[i].push_back(i - n);
        }
    }
    for(int i = 0;i <= len;i++){
        if(!used[i]){
            dfs(i);
        }
    }
    reverse(ord.begin(),ord.end());
    for(auto i:ord){
        pref[i] = timer++;
    }
    bool res = ok;
    ok = true;
    timer = 1;
    ord.clear();
    for(int i = 0;i <= len;i++){
        g[i].clear();
    }
    for(int i = 0;i <= len;i++){
        used[i] = 0;
    }
    return res;
}
void test(){
    cin >> n >> m;
    int l = 0,r = 5e5;
    while(r - l > 1){
        int mid = (l + r) >> 1;
        if(can(mid)){
            l = mid;
        }else{
            r = mid;
        }
    }
    can(l);
    cout << l << '\n';
    for(int i = 1;i <= l;i++){
        cout << pref[i] - pref[i - 1] << ' ';
    }
    cout << '\n';
}
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int T = 1;
    cin >> T;
    for (int i = 1; i <= T; i++)
    {
        test();
    }
}

• 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: 0 / 24