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Submission #838954

# Submission time Handle Problem Language Result Execution time Memory
838954 2023-08-28T10:27:09 Z rahidilbayramli Kangaroo (CEOI16_kangaroo) C++17
6 / 100
 2000 ms 300 KB 
#include<bits/stdc++.h>
#define ll long long
#define ld long double
#define vi vector<int>
#define vl vector<ll>
#define all(v) v.begin(), v.end()
#define pb push_back
#define f first
#define s second
#define pii pair<int, int>
#define pll pair<ll, ll>
using namespace std;
int main()
{
    ll n, cs, cf, i, j, ans = 0, k = 0;
    cin >> n >> cs >> cf;
    int v[n+1];
    for(i = 1; i <= n; i++)
        v[i] = i;
    while(next_permutation(v+1, v+n+1))
    {
        k = 0;
        if(v[1] == cs && v[n] == cf)
        {
            k = 2;
            for(i = 2; i <= n - 1; i++)
            {
                if((v[i] > v[i-1] && v[i] > v[i+1]) || (v[i] < v[i-1] && v[i] < v[i+1]))
                    k++;
            }
            if(k == n)
                ans++;
            ans %= 1000000007;
        }
    }
    cout << ans << "\n";
}

Compilation message

kangaroo.cpp: In function 'int main()':
kangaroo.cpp:15:22: warning: unused variable 'j' [-Wunused-variable]
   15 |     ll n, cs, cf, i, j, ans = 0, k = 0;
      |                      ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 0 ms 300 KB Output is correct

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 0 ms 300 KB Output is correct
3 Execution timed out 2066 ms 212 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 0 ms 300 KB Output is correct
3 Execution timed out 2066 ms 212 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 0 ms 300 KB Output is correct
3 Execution timed out 2066 ms 212 KB Time limit exceeded
4 Halted 0 ms 0 KB -