Submission #777778

#	Time	Username	Problem	Language	Result	Execution time	Memory
777778		TheSahib	Genetics (BOI18_genetics)	C++14	47 / 100	1588 ms	18416 KiB

genetics

#include <bits/stdc++.h>
#pragma GCC target("popcnt")


#define ll long long
#define oo 1e9
#define pii pair<int, int>

using namespace std;


bitset<4100> st[4100];

void solve(){
    int n, m, k; scanf("%d%d%d", &n, &m, &k);
    for (int i = 0; i < n; i++)
    {
        getchar();
        for (int j = 0; j < m; j++)
        {
            char c = getchar();
            st[i][j] = (c == 'C');
        }
    }
    vector<int> v;
    v.resize(n);
    iota(v.begin(), v.end(), 0);
    srand(time(0));
    random_shuffle(v.begin(), v.end());
    for (int i:v)
    {
        bool pos = true;
        for (int j:v)
        {
            if(i == j) continue;
            if((st[i] ^ st[j]).count() != k){
                pos = false;
                break;
            }
        }
        if(pos){
            cout << i + 1 << '\n';
            return;
        }
    }
    
}

int main()
{
    solve();
}

Compilation message (stderr)

genetics.cpp: In function 'void solve()':
genetics.cpp:36:40: warning: comparison of integer expressions of different signedness: 'std::size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |             if((st[i] ^ st[j]).count() != k){
      |                ~~~~~~~~~~~~~~~~~~~~~~~~^~~~
genetics.cpp:15:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     int n, m, k; scanf("%d%d%d", &n, &m, &k);
      |                  ~~~~~^~~~~~~~~~~~~~~~~~~~~~

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