oj.uz

Submission #685400

# Submission time Handle Problem Language Result Execution time Memory
685400 2023-01-24T10:01:20 Z annie2018 Secret Permutation (RMI19_permutation) C++17
0 / 100
 0 ms 208 KB 
#include <bits/stdc++.h>
#include "permutation.h"
using namespace std;
vector <int> ans;
void get(vector<int> &q, int n)
{
    vector <int> a(n);
    for (int i = 1; i <= n; i++)
        a[i - 1] = i;
    bool f = 1;
    do
    {
        f = 1;
        for (int i = 0; i < n - 1; i++)
            if (abs(a[i + 1] - a[i]) != q[i])
                f = 0;
        if (abs(a[0] - a[n - 1]) != q[n - 1])
            f = 0;
        if (f){
            /*for (int i = 0; i < n; i++)
                cout << a[i] << ' ';
            cout << "\n";*/
            ans = a;
            return;
        }
    }
    while (next_permutation(a.begin(), a.end()));
}

void solve(int n) {
    srand(chrono::steady_clock::now().time_since_epoch().count());
    vector <int> v;
    for (int i = 1; i <= n; i++)
        v.push_back(i);
    random_shuffle(v.begin(), v.end());
    vector <int> q(n);
    for(int i = 0; i < n; i++)
    {
        q[i] = query(v);
        rotate(v.begin(),v.begin()+1,v.end());
    }
    int sum = 0;
    for(int i = 0; i < n; i++)
        sum += q[i];
    sum /= (n - 1);
    for(int i = 0; i < n; i++)
        q[i] = (sum - q[i]);
    rotate(q.begin(), q.begin() + 1, q.end());
    /*for (int i = 0; i < n; i++)
        cout << q[i] << ' ';
    cout << "\n";*/
    //ans.assign(n, 0);
    get(q, n);
    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
0.0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 208 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 208 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0.0 / 50.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 208 KB Output isn't correct
2 Halted 0 ms 0 KB -