oj.uz

Submission #685441

# Submission time Handle Problem Language Result Execution time Memory
685441 2023-01-24T11:08:15 Z annie2018 Secret Permutation (RMI19_permutation) C++17
100 / 100
 2029 ms 416 KB 
#include <bits/stdc++.h>
#include "permutation.h"
using namespace std;
int n;
vector <int> fin(257), v, a(257), q(257);
bitset <257> used;
void get (int x)
{
    used[a[x]] = 1;
    if (x == n && abs(a[1] - a[x]) == q[n])
    {
        vector <int> 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]);
        }
        /*for (int i = 0; i < ret.size(); i++)
            cout << ret[i] << ' ';
        cout << "\n";*/
        answer(ret);
        exit(0);
    }
    else
    {
        int one = a[x] - q[x], two = a[x] + q[x];
        if (one > 0 && one <= n && !used[one] && abs(one - a[x]) == q[x])
        {
            a[x + 1] = one;
            get(x + 1);
        }
        if (two > 0 && two <= n && !used[two] && abs(two - a[x]) == q[x])
        {
            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());
    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[n + 1] = 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 < n + 2; i++)
        cout << q[i] << ' ';
    cout << "\n";*/
    //get(q, n);
    for (int i = 1; i <= n; i++)
    {
        for (int i2 = 1; i2 <= n; i2++)
            a[i2] = 0;
        a[1] = i;
        used.reset();
        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 0 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 0 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 0 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 0 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 1 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 208 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 0 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 0 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 1 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 208 KB Output is correct
17 Correct 134 ms 300 KB Output is correct
18 Correct 13 ms 208 KB Output is correct
19 Correct 17 ms 308 KB Output is correct
20 Correct 307 ms 416 KB Output is correct
21 Correct 58 ms 300 KB Output is correct
22 Correct 18 ms 296 KB Output is correct
23 Correct 18 ms 296 KB Output is correct
24 Correct 2029 ms 292 KB Output is correct
25 Correct 194 ms 300 KB Output is correct
26 Correct 61 ms 292 KB Output is correct