Submission #166864

#	Time	Username	Problem	Language	Result	Execution time	Memory
166864		Eae02	Genetics (BOI18_genetics)	C++14	19 / 100	2084 ms	43000 KiB

genetics

#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;

bitset<4101> dna[4101];

int diff[4101][4101];

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	
	int n, m, k;
	cin >> n >> m >> k;
	
	for (int i = 0; i < n; i++) {
		string ln; cin >> ln;
		for (int j = 0; j < m; j++) {
			if (ln[j] == 'A')
				dna[i].set(j);
		}
	}
	
	for (int a = 0; a < n; a++) {
		for (int b = a + 1; b < n; b++) {
			diff[a][b] = (dna[a] ^ dna[b]).count();
		}
	}
	
	for (int a = 0; a < n; a++) {
		bool allK = true;
		for (int b = 0; b < n; b++) {
			if (b != a && diff[min(a, b)][max(a, b)] != k) {
				allK = false;
				break;
			}
		}
		if (allK) {
			cout << (a + 1) << "\n";
			return 0;
		}
	}
	
	cout << "?\n";
	return 1;
}

• Subtask 1: 0 / 27
• Subtask 2: 19 / 19
• Subtask 3: 0 / 28
• Subtask 4: 0 / 26