Submission #878170

#	Time	Username	Problem	Language	Result	Execution time	Memory
878170		vjudge1	Genetics (BOI18_genetics)	C++17	46 / 100	2037 ms	27600 KiB

genetics

#include <bits/stdc++.h>
using namespace std;

#define ll long long 
#define pb push_back

#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2")

const int N = 4100 + 4;

int n, m, k;
string s[N];
bitset<N << 2> tmp, b[N];

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    cin >> n >> m >> k;
    for (int i = 0; i < n; ++i) {
        cin >> s[i];
        for (int j = 0; j < m; ++j) {
            if (s[i][j] == 'A') {
                b[i][j] = true;
            }
            else if (s[i][j] == 'G') {
                b[i][j + m] = true;
            }
            else if (s[i][j] == 'C') {
                b[i][j + 2 * m] = true;
            }
            else if (s[i][j] == 'T') {
                b[i][j + 3 * m] = true;
            }
        }
    }

    for (int i = 0; i < n; ++i) {
        int cntOk = 0;
        for (int j = 0; j < n; ++j) {
            if (i == j) {
                continue;
            }
            tmp = b[i] ^ b[j];
            cntOk += (tmp.count() == (k << 1));
        }
        if (cntOk == n - 1) {
            cout << i + 1;
            return 0;
        }
    }

    return 0;
}

Compilation message (stderr)

genetics.cpp: In function 'int main()':
genetics.cpp:46:35: warning: comparison of integer expressions of different signedness: 'std::size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   46 |             cntOk += (tmp.count() == (k << 1));
      |                       ~~~~~~~~~~~~^~~~~~~~~~~

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