Submission #1095279

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095279		vjudge1	Genetics (BOI18_genetics)	C++17	100 / 100	78 ms	33996 KiB

genetics

#include <bits/stdc++.h>
// #ifndef ONLINE_JUDGE
// #include "/Users/quocbaonguyentran/Documents/VOI25/template/debug.cpp"
// #else
// #define debug(...) ;
// #endif
using namespace std;
#define endl "\n"
#define ll long long
mt19937 rng(chrono::high_resolution_clock().now().time_since_epoch().count());
#define rand(a, b) uniform_int_distribution<ll>(a, b)(rng)
ll n, m, k;
string s[4105];
int kc[4105][4105];
ll w[4105];
ll vt[30][4105];
char v[] = {'A', 'C', 'G', 'T'};
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> m >> k;
    ll sum = 0;
    for (int i = 1; i <= n; i++)
    {
        cin >> s[i];
        s[i] = " " + s[i];
        w[i] = rand(1000, 1e12);
        sum += w[i];
        for (int j = 1; j <= m; j++)
        {
            vt[s[i][j] - 'A'][j] += w[i];
        }
    }
    for (int i = 1; i <= n; i++)
    {
        ll ss = 0;
        for (int j = 1; j <= m; j++)
        {
            ss += vt[s[i][j] - 'A'][j] - w[i];
        }
        if (ss == (sum - w[i]) * (m - k))
        {
            cout << i;
            break;
        }
    }
}

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