oj.uz

Submission #211598

# Submission time Handle Problem Language Result Execution time Memory
211598 2020-03-20T19:03:35 Z VEGAnn Nice sequence (IZhO18_sequence) C++14
0 / 100
 5 ms 384 KB 
#include <bits/stdc++.h>
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")
#define ft first
#define sd second
#define all(x) x.begin(),x.end()
#define sz(x) ((int)x.size())
#define pll pair<ll, ll>
#define MP make_pair
#define PB push_back
using namespace std;
typedef long long ll;
const int N = 200100;
vector<int> ts;
int n, m, len, mrk[N], pf[N];
bool cyc;

void dfs(int v){
    if (cyc) return;

    mrk[v] = 1;

    if (v >= m){
        if (mrk[v - m] == 0)
            dfs(v - m);
        else if (mrk[v - m] == 1){
            cyc = 1;
            return;
        }
    }

    if (v + n <= len){
        if (mrk[v + n] == 0)
            dfs(v + n);
        else if (mrk[v + n] == 1){
            cyc = 1;
            return;
        }
    }

    mrk[v] = 2;
}

bool ok(){
    fill(mrk, mrk + len + 1, 0);
    cyc = 0;

    for (int i = 0; i <= len && !cyc; i++)
        if (mrk[i] == 0)
            dfs(i);

    return !cyc;
}

void DFS(int v){
    mrk[v] = 1;

    if (v >= m){
        if (mrk[v - m] == 0)
            DFS(v - m);
    }

    if (v + n <= len){
        if (mrk[v + n] == 0)
            DFS(v + n);
    }

    ts.PB(v);
}


int main(){
#ifdef _LOCAL
    freopen("in.txt","r",stdin);
#else
    ios_base::sync_with_stdio(0); cin.tie(0);
#endif // _LOCAL

    int qq; cin >> qq;

    for (; qq; qq--){
        cin >> n >> m;

        int l = 0, r = (n + m) * 2;

        while (l < r){
            int md = (l + r + 1) >> 1;
            len = md;

            if (ok())
                l = md;
            else r = md - 1;
        }

        cout << l << '\n';
        len = l;
        fill(mrk, mrk + len + 1, 0);
        fill(pf, pf + len + 1, -1);
        ts.clear();

        for (int i = 0; i <= len; i++)
            if (!mrk[i])
                DFS(i);

        for (int v : ts){
            int mx = -1;

            if (v >= m)
                mx = max(mx, pf[v - m]);

            if (v + n <= len)
                mx = max(mx, pf[v + n]);

            pf[v] = mx + 1;
        }

        for (int i = 1; i <= len; i++)
            cout << pf[i] - pf[i - 1] << " ";
        cout << '\n';
    }

    return 0;
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Ok
2 Incorrect 5 ms 384 KB All the numbers must be nonzero
3 Halted 0 ms 0 KB -

Subtask #2
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB All the numbers must be nonzero
2 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Ok
2 Correct 5 ms 384 KB Ok
3 Incorrect 4 ms 384 KB All the numbers must be nonzero
4 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB All the numbers must be nonzero
2 Halted 0 ms 0 KB -

Subtask #5
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Ok
2 Incorrect 5 ms 384 KB All the numbers must be nonzero
3 Halted 0 ms 0 KB -

Subtask #6
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Ok
2 Incorrect 5 ms 384 KB All the numbers must be nonzero
3 Halted 0 ms 0 KB -

Subtask #7
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Ok
2 Incorrect 5 ms 384 KB All the numbers must be nonzero
3 Halted 0 ms 0 KB -