Submission #473711

#	Time	Username	Problem	Language	Result	Execution time	Memory
473711		Sarah_Mokhtar	Genetics (BOI18_genetics)	C++14	46 / 100	461 ms	29544 KiB

genetics

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define read freopen("acpc.in","r",stdin);
#define LESSGO ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
const ll N=1801,M=505,OO=1e16,mod=1e9+9;
int n,m,d,onB[N],offB[N],dis[N];
string a[N];
int solve(){
    for(int i=0;i<n;++i){
        int cnt=0;
        for(int j=0;j<n;++j){
            if(i==j) continue;
            int diff=0;
            for(int k=0;k<m;++k){
                if(a[i][k]!=a[j][k]) ++diff;
            }
            if(diff==d) ++cnt;
        }
        if(cnt==n-1) return i+1;
    }
    return 0;
}
int main(){
    cin>>n>>m>>d;
    for(int i=0;i<n;++i) cin>>a[i];
    if(n<=100){
        cout<<solve()<<"\n";
        return 0;
    }
    bitset<N>s[N];
    for(int i=0;i<n;++i){
        for(int j=0;j<m;++j){
            if(a[i][j]=='A') s[i][j]=1;
        }
    }
    
    for(int i=0;i<n;++i){
        int cnt=0;
        for(int j=0;j<n;++j){
            if(i==j) continue;
            bitset<N>tmp=(s[i]^s[j]);
            if(tmp.count()==d) ++cnt;
        }
        if(cnt==n-1){
            cout<<i+1<<"\n";
            return 0;
        }
    }



}

Compilation message (stderr)

genetics.cpp: In function 'int main()':
genetics.cpp:43:27: warning: comparison of integer expressions of different signedness: 'std::size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   43 |             if(tmp.count()==d) ++cnt;
      |                ~~~~~~~~~~~^~~

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