Submission #535943

#	Time	Username	Problem	Language	Result	Execution time	Memory
535943		groshi	Genetics (BOI18_genetics)	C++17	100 / 100	146 ms	36224 KiB

genetics

#include<iostream>
#include <stdlib.h>
#include <time.h>
using namespace std;
long long litery[30][6000];
long long los[6000];
string t[6000];
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    srand(time(0));
    long long n,m,k;
    cin>>n>>m>>k;
    long long suma_ogolna=0;
    for(int i=1;i<=n;i++)
    {
        los[i]=rand()%1000000000;
        suma_ogolna+=los[i];
    }
    for(int i=1;i<=n;i++)
    {
        cin>>t[i];
        for(int j=0;j<m;j++)
            litery[t[i][j]-'A'][j]+=los[i];
    }
    for(int i=1;i<=n;i++)
    {
        long long suma=0;
        for(int j=0;j<m;j++)
            suma+=litery[t[i][j]-'A'][j]-los[i];
        if((suma_ogolna-los[i])*(m-k)==suma)
        {
            cout<<i;
            return 0;
        }
    }
    return 0;
}

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