oj.uz

Submission #899137

# Submission time Handle Problem Language Result Execution time Memory
899137 2024-01-05T14:00:28 Z penguin133 Kangaroo (CEOI16_kangaroo) C++17
6 / 100
 2000 ms 348 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

int ans = 0, P[10];

void solve(){
	int n, x, y; cin >> n >> x>> y;
	for(int i=1;i<=n;i++)P[i] = i;
	do{
		bool f = 1;
		if(P[1] != x || P[n] != y)f = 0;
		if(!f)continue;
		int st = -1;
		for(int i=2;i<=n;i++){
			int sg = (P[i] > P[i-1]);
			if(st == -1)st = sg;
			else if(st == sg)f = 0;
			st = sg;
		}
		if(f)ans++;
	}while(next_permutation(P + 1, P + n + 1));
	cout << ans;
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message

kangaroo.cpp:35:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   35 | main(){
      | ^~~~

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 -