Submission #1212317

#	Time	Username	Problem	Language	Result	Execution time	Memory
1212317		StefanSebez	Genetics (BOI18_genetics)	C++20	46 / 100	2058 ms	31180 KiB

genetics

#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pb push_back
#define ll long long
#define ld long double
#pragma GCC target("popcnt")
const int N=4110;
mt19937 rng(time(0));
int n,m,K;
string s[N];
bool was[N];
int dist[N][N];
int Get(int i,int j){
	if(dist[i][j]) return dist[i][j];
	int res=0;
	for(int k=0;k<m;k++) if(s[i][k]!=s[j][k]) res++;
	return dist[i][j]=res;
}
bitset<N>bt[4][N];
int GET(int i,int j){
	int res=0;
	for(int k=0;k<4;k++){
		res+=(bt[k][i]&bt[k][j]).count();
	}
	return m-res;
}
int main(){
    scanf("%i%i%i",&n,&m,&K);
    for(int i=0;i<n;i++) cin>>s[i];
    for(int i=0;i<n;i++){
		for(int j=0;j<m;j++){
			if(s[i][j]=='A') bt[0][i][j]=1;
			if(s[i][j]=='C') bt[1][i][j]=1;
			if(s[i][j]=='G') bt[2][i][j]=1;
			if(s[i][j]=='T') bt[3][i][j]=1;
		}
    }
    /*for(int ct=1;ct<=n;ct++){
		vector<int>temp;
		for(int i=0;i<n;i++) temp.pb(i);
		shuffle(temp.begin(),temp.end(),rng);
		vector<int>ind;
		bool broke=false;
		for(auto i:temp){
			if(!was[i]){
				for(auto j:ind){
					if(Get(i,j)!=K){
						was[i]=was[j]=true;
						broke=true;
					}
				}
				ind.pb(i);
			}
			if(broke) break;
		}
		if(ind.size()==1) break;
    }*/
    for(int i=0;i<n;i++){
		for(int j=i+1;j<n;j++){
			if(GET(i,j)!=K) was[i]=was[j]=true;
		}
    }
    int res=0;
    for(int i=0;i<n;i++) if(!was[i]) res=i;
    res++;
    printf("%i\n",res);
    return 0;
}

Compilation message (stderr)

genetics.cpp: In function 'int main()':
genetics.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     scanf("%i%i%i",&n,&m,&K);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 27 / 27
• Subtask 2: 19 / 19
• Subtask 3: 0 / 28
• Subtask 4: 0 / 26