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Submission #984023

# Submission time Handle Problem Language Result Execution time Memory
984023 2024-05-16T09:21:48 Z irmuun Kangaroo (CEOI16_kangaroo) C++17
6 / 100
 2000 ms 348 KB 
#include<bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

const ll mod=1e9+7;

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    ll n,cs,cf;
    cin>>n>>cs>>cf;
    vector<ll>v(n);
    iota(all(v),1);
    ll ans=0;
    do{
        if(v[0]!=cs||v[n-1]!=cf) continue;
        bool ok=true;
        for(ll i=1;i<n-1;i++){
            if(max(v[i-1],v[i+1])<v[i]||min(v[i-1],v[i+1])>v[i]) continue;
            ok=false;
        }
        if(ok) ans++;
    }while(next_permutation(all(v)));
    cout<<ans;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Execution timed out 2076 ms 348 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Execution timed out 2076 ms 348 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Execution timed out 2076 ms 348 KB Time limit exceeded
4 Halted 0 ms 0 KB -