oj.uz

Submission #685443

# Submission time Handle Problem Language Result Execution time Memory
685443 2023-01-24T11:10:36 Z annie2018 Secret Permutation (RMI19_permutation) C++17
100 / 100
 3610 ms 428 KB 
#include <bits/stdc++.h>
#include "permutation.h"
using namespace std;
int n;
vector <int> ans, v, a, q;
vector <bool> used;
void get (int x)
{
    used[a[x]] = 1;
    if (x == n && abs(a[1] - a[x]) == q[n])
    {
        vector <int> fin(n + 1), ret;
        for(int i = 1;i <= n; i++)
        {
            fin[v[i - 1]] = a[i];
        }
        for(int i = 1; i <= n; i++)
        {
            ret.push_back(fin[i]);
        }
        answer(ret);
        exit(0);
    }
    else
    {
        int one = a[x] - q[x], two = a[x] + q[x];
        if (one > 0 && one <= n && !used[one])
        {
            a[x + 1] = one;
            get(x + 1);
        }
        if (two > 0 && two <= n && !used[two])
        {
            a[x + 1] = two;
            get(x + 1);
        }
    }
    used[a[x]] = 0;
    a[x] = 0;
}
void solve(int nn)
{
    n = nn;
    srand(chrono::steady_clock::now().time_since_epoch().count());
    for (int i = 1; i <= n; i++)
        v.push_back(i);
    random_shuffle(v.begin(), v.end());
    //vector <int> q(n);
    q.resize(n + 1);
    for(int i = 1; i <= n; i++)
    {
        rotate(v.begin(), v.begin() + 1, v.end());
        q[i] = query(v);
    }
    rotate(v.begin(), v.begin() + 1, v.end());
    int sum = 0;
    for(int i = 1; i <= n; i++)
        sum += q[i];
    sum /= (n - 1);
    for(int i = 1; i <= n; i++)
        q[i] = (sum - q[i]);
    q.push_back(q[1]);
    for(int i = 1; i <= n; i++)
        q[i] = q[i + 1];
    /*for (int i = 0; i < v.size(); i++)
        cout << v[i] << ' ';
    cout << "\n";
    for (int i = 0; i < q.size(); i++)
        cout << q[i] << ' ';
    cout << "\n";*/
    //get(q, n);
    for (int i = 1; i <= n; i++)
    {
        a.assign(n + 1, 0);
        a[1] = i;
        used.assign(n + 1, 0);
        get(1);
    }
    //answer(ans);
}

Compilation message

stub.cpp: In function 'int query(int*)':
stub.cpp:15:9: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |   fscanf(stdin, "%d", &x);
      |   ~~~~~~^~~~~~~~~~~~~~~~~
stub.cpp: In function 'int main(int, char**)':
stub.cpp:48:9: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |   fscanf(stdin, "%d", &N);
      |   ~~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 2 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 208 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 2 ms 336 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 2 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 208 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 2 ms 336 KB Output is correct
17 Correct 133 ms 424 KB Output is correct
18 Correct 8 ms 288 KB Output is correct
19 Correct 28 ms 296 KB Output is correct
20 Correct 808 ms 428 KB Output is correct
21 Correct 9 ms 288 KB Output is correct
22 Correct 28 ms 208 KB Output is correct
23 Correct 138 ms 304 KB Output is correct
24 Correct 3610 ms 300 KB Output is correct
25 Correct 55 ms 284 KB Output is correct
26 Correct 20 ms 292 KB Output is correct