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Submission #861736

# Submission time Handle Problem Language Result Execution time Memory
861736 2023-10-16T21:19:10 Z Cyber_Wolf Kamenčići (COCI21_kamencici) C++17
70 / 70
 109 ms 501364 KB 
#include <bits/stdc++.h>

using namespace std;

#define lg long long 

const lg N = 400;

lg dp[N][N][N], pref[N];
lg n, k;
string s;

lg solve(lg l, lg r, lg o)
{
	if(o >= k)	return 0;
	if(pref[l-1]+pref[n]-pref[r]-o >= k)	return 1;
	auto&ret = dp[l][r][o];
	if(~ret)	return ret;
	if((l-1+n-r)%2)
	{
		ret = min(solve(l+1, r, o), solve(l, r-1, o));
	}
	else{
		ret = max(solve(l+1, r, o+(s[l-1] == 'C')), solve(l, r-1, o+(s[r-1] == 'C')));
	}
	// cout << l << ' ' << r << ' ' << o << '\n';
	// cout << ret << '\n';
	return ret;
}

int main()
{
	cin >> n >> k;
	cin >> s;
	for(int i = 1; i <= n; i++)
	{
		pref[i] = pref[i-1]+(s[i-1] == 'C');
	}
	memset(dp, -1, sizeof(dp));
	cout << (solve(1, n, 0) ? "DA" : "NE") << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 105 ms 501228 KB Output is correct
2 Correct 97 ms 501156 KB Output is correct
3 Correct 103 ms 501316 KB Output is correct
4 Correct 92 ms 501332 KB Output is correct
5 Correct 92 ms 501332 KB Output is correct
6 Correct 91 ms 501300 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 105 ms 501228 KB Output is correct
2 Correct 97 ms 501156 KB Output is correct
3 Correct 103 ms 501316 KB Output is correct
4 Correct 92 ms 501332 KB Output is correct
5 Correct 92 ms 501332 KB Output is correct
6 Correct 91 ms 501300 KB Output is correct
7 Correct 92 ms 501328 KB Output is correct
8 Correct 90 ms 501180 KB Output is correct
9 Correct 90 ms 501332 KB Output is correct
10 Correct 89 ms 501168 KB Output is correct
11 Correct 91 ms 501196 KB Output is correct
12 Correct 93 ms 501252 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 105 ms 501228 KB Output is correct
2 Correct 97 ms 501156 KB Output is correct
3 Correct 103 ms 501316 KB Output is correct
4 Correct 92 ms 501332 KB Output is correct
5 Correct 92 ms 501332 KB Output is correct
6 Correct 91 ms 501300 KB Output is correct
7 Correct 92 ms 501328 KB Output is correct
8 Correct 90 ms 501180 KB Output is correct
9 Correct 90 ms 501332 KB Output is correct
10 Correct 89 ms 501168 KB Output is correct
11 Correct 91 ms 501196 KB Output is correct
12 Correct 93 ms 501252 KB Output is correct
13 Correct 91 ms 501332 KB Output is correct
14 Correct 109 ms 501180 KB Output is correct
15 Correct 93 ms 501188 KB Output is correct
16 Correct 105 ms 501328 KB Output is correct
17 Correct 98 ms 501364 KB Output is correct
18 Correct 91 ms 501328 KB Output is correct