제출 #447219

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
447219		prvocislo	Genetics (BOI18_genetics)	C++17	100 / 100	382 ms	83080 KiB

genetics

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

ll my_rand() { return (rand() * 100000ll + rand() * 100ll + (ll)rand()); }
const string dna = "ACGT";
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, m, k;
    cin >> n >> m >> k;
    vector<vector<int> > v(n, vector<int>(m));
    vector<vector<ll> > sum(m, vector<ll>(4, 0));
    vector<ll> w(n);
    ll ans = 0;
    for (int i = 0; i < n; i++)
    {
        w[i] = my_rand();
        string s; cin >> s;
        for (int j = 0; j < m; j++)
        {
            v[i][j] = find(dna.begin(), dna.end(), s[j]) - dna.begin();
            for (int c = 0; c < 4; c++) if (c ^ v[i][j]) sum[j][c] += w[i];
        }
        ans += w[i] * (ll)k;
    }
    for (int i = 0; i < n; i++)
    {
        ll my = w[i] * (ll)k;
        for (int j = 0; j < m; j++) my += sum[j][v[i][j]];
        if (my == ans)
        {
            cout << i+1 << "\n";
            return 0;
        }
    }
    return 0;
}

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