oj.uz

Submission #917187

# Submission time Handle Problem Language Result Execution time Memory
917187 2024-01-27T11:53:49 Z KiaRez Kangaroo (CEOI16_kangaroo) C++17
36 / 100
 2000 ms 199384 KB 
/*
    IN THE NAME OF GOD
*/
#include <bits/stdc++.h>

// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")

using namespace std;

typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef long double ld;

#define F                                      first
#define S                                      second
#define Mp                                     make_pair
#define pb                                     push_back
#define pf                                     push_front
#define size(x)                                ((ll)x.size())
#define all(x)                                 (x).begin(),(x).end()
#define kill(x)		                           cout << x << '\n', exit(0);
#define fuck(x)                                cout << "(" << #x << " , " << x << ")" << endl
#define endl                                   '\n'

const int N = 3e5+23, lg = 18;
ll Mod = 1e9+7; //998244353;

inline ll MOD(ll a, ll mod=Mod) {a%=mod; (a<0)&&(a+=mod); return a;}
inline ll poww(ll a, ll b, ll mod=Mod) {
    ll ans = 1;
    a=MOD(a, mod);
    while (b) {
        if (b & 1) ans = MOD(ans*a, mod);
        b >>= 1;
        a = MOD(a*a, mod);
    }
    return ans;
}

int ln, s, f, num, mark[205][205][205][2];
ll mp[205][205][205][2];

ll calc(int n, int i, int j, int flg=0) {
	num++;
	if(min(i, j)<=0 || max(i, j)>n || i==j) return 0;
	if(n==2) {
		if(i<j&&flg==0) return 1;
		if(i>j&&flg==1) return 1;
		return 0;
	}
	if(i > j) {
		if((n-1)%2 == 1) return calc(n, j, i, 1-flg);
		return calc(n, j, i, flg);
	}

	if(mark[n][i][j][flg] == 1) return mp[n][i][j][flg];
	
	ll res = 0;
	if(flg == 0) {
		if(i==j-1) {
			for(int k=i+1; k<=n-1; k++) res = MOD(res + calc(n-1, k, j-1, 1));
		} else {
			res = MOD(calc(n, i+1, j, 0) + calc(n-1, i, j-1, 1));
		}
	} else {
		res = MOD(res + calc(n, i-1, j, 1) + calc(n-1, i-1, j-1, 0));
	}
	mp[n][i][j][flg] = res, mark[n][i][j][flg] = 1;
	return res;
}

int main () {
	ios_base::sync_with_stdio(false), cin.tie(0);

	cin>>ln>>s>>f;
	cout<<MOD(calc(ln, s, f, 0) + calc(ln, s, f, 1));
	while(num > 200*200*20) cout<<0;

	return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 3 ms 19288 KB Output is correct
4 Correct 5 ms 28508 KB Output is correct
5 Correct 5 ms 28252 KB Output is correct
6 Correct 5 ms 28516 KB Output is correct
7 Correct 5 ms 26204 KB Output is correct
8 Correct 5 ms 28504 KB Output is correct
9 Correct 5 ms 28252 KB Output is correct
10 Correct 5 ms 28508 KB Output is correct
11 Correct 5 ms 28252 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 3 ms 19288 KB Output is correct
4 Correct 5 ms 28508 KB Output is correct
5 Correct 5 ms 28252 KB Output is correct
6 Correct 5 ms 28516 KB Output is correct
7 Correct 5 ms 26204 KB Output is correct
8 Correct 5 ms 28504 KB Output is correct
9 Correct 5 ms 28252 KB Output is correct
10 Correct 5 ms 28508 KB Output is correct
11 Correct 5 ms 28252 KB Output is correct
12 Execution timed out 2062 ms 199384 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 3 ms 19288 KB Output is correct
4 Correct 5 ms 28508 KB Output is correct
5 Correct 5 ms 28252 KB Output is correct
6 Correct 5 ms 28516 KB Output is correct
7 Correct 5 ms 26204 KB Output is correct
8 Correct 5 ms 28504 KB Output is correct
9 Correct 5 ms 28252 KB Output is correct
10 Correct 5 ms 28508 KB Output is correct
11 Correct 5 ms 28252 KB Output is correct
12 Execution timed out 2062 ms 199384 KB Time limit exceeded
13 Halted 0 ms 0 KB -