Submission #1173094

#	Time	Username	Problem	Language	Result	Execution time	Memory
1173094		Hanksburger	Genetics (BOI18_genetics)	C++20	100 / 100	460 ms	132460 KiB

genetics

#include <bits/stdc++.h>
#define int long long
using namespace std;
int a[4105][4105], cnt[4105][4], w[4105];
signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    srand(time(0));
    int n, m, k, sum=0;
    cin >> n >> m >> k;
    for (int i=1; i<=n; i++)
    {
        w[i]=rand();
        sum+=w[i];
        for (int j=1; j<=m; j++)
        {
            char x;
            cin >> x;
            a[i][j]=(x=='A'?0:(x=='C'?1:(x=='G'?2:3)));
            cnt[j][a[i][j]]+=w[i];
        }
    }
    for (int i=1; i<=n; i++)
    {
        int num=0;
        for (int j=1; j<=m; j++)
            num+=sum-cnt[j][a[i][j]];
        if (num==k*(sum-w[i]))
            cout << i;
    }
}

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