Submission #862214

#	Time	Username	Problem	Language	Result	Execution time	Memory
862214		TAhmed33	Kamenčići (COCI21_kamencici)	C++98	70 / 70	58 ms	169900 KiB

Main

#include <bits/stdc++.h>
using namespace std;
int dp[351][351][351];
int arr[351];
int n, k;
int ans (int l, int r, int c, int c2) {
	if (c == k || c2 == k) return 1;
	int &ret = dp[l][r][c];
	if (ret != -1) return ret;
	int x = r - l + 1; ret = 0;
	if ((x & 1) == (n & 1)) {
		ret |= !ans(l + 1, r, c + arr[l], c2);
		ret |= !ans(l, r - 1, c + arr[r], c2);
	} else {
		ret |= !ans(l + 1, r, c, c2 + arr[l]);
		ret |= !ans(l, r - 1, c, c2 + arr[r]);
	}
	return ret;
}
int main () {
	memset(dp, -1, sizeof(dp));
	cin >> n >> k;
	for (int i = 1; i <= n; i++) {
		char x; cin >> x; arr[i] = (x == 'C');
	}
	cout << (ans(1, n, 0, 0) ? "DA\n" : "NE\n");
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 40 / 40