Submission #709531

#	Time	Username	Problem	Language	Result	Execution time	Memory
709531		stevancv	Genetics (BOI18_genetics)	C++14	46 / 100	2043 ms	53640 KiB

genetics

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 4100 + 5;
const int inf = 1e9;
const int mod = 1e9 + 7;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, m, k;
    cin >> n >> m >> k;
    vector<string> s(n);
    map<string, int> mp;
    for (int i = 0; i < n; i++) {
        cin >> s[i];
        mp[s[i]]++;
    }
    if (n <= 100 && m <= 100) {
        for (int i = 0; i < n; i++) {
            if (mp[s[i]] > 1) continue;
            map<string, int> bio;
            int moze = 1;
            for (int j = 0; j < n; j++) {
                if (i == j || bio[s[j]] == 1) continue;
                int r = 0;
                for (int p = 0; p < m; p++) {
                    if (s[i][p] != s[j][p]) r += 1;
                    if (r > k || r + m - p - 1 < k) {
                        moze = 0;
                        break;
                    }
                }
                if (moze == 0) break;
                bio[s[j]] = 1;
            }
            if (moze == 0) continue;
            cout << i + 1 << en;
            return 0;
        }
    }
    bitset<N> b[n];
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            if (s[i][j] == 'A') b[i][j] = 0;
            else b[i][j] = 1;
        }
    }
    for (int i = 0; i < n; i++) {
        int moze = 1;
        for (int j = 0; j < n; j++) {
            if (i == j) continue;
            bitset<N> c = b[i] ^ b[j];
            if (c.count() != k) {
                moze = 0;
                break;
            }
        }
        if (moze == 1) {
            cout << i + 1 << en;
            return 0;
        }
    }
    return 0;
}

Compilation message (stderr)

genetics.cpp: In function 'int main()':
genetics.cpp:59:27: warning: comparison of integer expressions of different signedness: 'std::size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   59 |             if (c.count() != k) {
      |                 ~~~~~~~~~~^~~~

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