Submission #753266

#	Time	Username	Problem	Language	Result	Execution time	Memory
753266		boyliguanhan	Genetics (BOI18_genetics)	C++17	100 / 100	1184 ms	137832 KiB

genetics

#include<bits/stdc++.h>
#define int long long
#define X d[i][j]
#define F(i,j,k) for(int i=j;i<k;++i)
using namespace std;
int n, m, k, tot, sum[4101][4], d[4101][4101], w[4101];
signed main() {
    cin >> n >> m >> k;
    mt19937 rng(12874);
    F(i,1,n+1){
        char c; tot+=w[i]=rng();
        F(j,0,m){
            cin >> c;
            if(c=='C')X=1;
            if(c=='G')X=2;
            if(c=='T')X=3;
            sum[j][X]+=w[i];
        }
    }
    F(i,1,n+1){
        int x = 0;
        F(j,0,m){
            x+=tot-sum[j][X];
        }
        if(x==k*(tot-w[i]))
            cout << i << '\n';
    }
}

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