Submission #554592

#	Time	Username	Problem	Language	Result	Execution time	Memory
554592		new_acc	Genetics (BOI18_genetics)	C++14	0 / 100	33 ms	36912 KiB

genetics

#include<bits/stdc++.h>
#define fi first
#define se second
#define pitem item*
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef vector<ll> vl;
const int N=1e6+10;
const int SS=1<<19;
const int INFi=2e9;
const ll INFl=1e13;
const ll mod2=998244353;
const ll mod=1e9+7;
const ll mod3=1000696969;
const ll p=70032301;
const ull p2=913;
const int L=20;
string s[N];
int n,m,k;
bitset<N>ok;
bool check(int a){
	bool res=1;
	for(int i=1;i<=n;i++){
		if(a==i) continue;
		int il=0;
		for(int j=0;j<m;j++) if(s[i][j]!=s[a][j]) il++;
		if(il!=k) res=0;
	}
	return res;
}
void solve(){
	cin>>n>>m>>k;
	for(int i=1;i<=n;i++) cin>>s[i];
	if(check(1)){
		cout<<1<<"\n";
		return;
	}
	int p=0;
	for(int i=2;i<=n;i++){
		int il=0;
		for(int j=0;j<m;j++) if(s[i][j]!=s[1][j]) il++;
		if(il==k) ok[i]=1,p=i;;
	}
	if(check(p)){
		cout<<p<<"\n";
		return;
	}
	vi kand;
	for(int i=2;i<p;i++){
		int il=0;
		for(int j=0;j<m;j++) if(s[i][j]!=s[p][j]) il++;
		if(il==k and ok[i]) kand.push_back(i);
	}
	if(kand.size()==2){
		if(check(kand[0])) cout<<kand[0]<<"\n";
		else cout<<kand[1]<<"\n";
		return;
	}
	if(kand.size()==1){
		cout<<kand[0]<<"\n";
		return;
	}
	if(s[kand[0]]!=s[kand[1]]){
		if(s[kand[1]]==s[kand[2]]) cout<<kand[0]<<"\n";
		else cout<<kand[1]<<"\n";
		return;
	}
	for(int i=1;i<kand.size();i++){
		if(s[kand[i]]!=s[kand[0]]){
			cout<<kand[i]<<"\n";
			return;
		}
	}
}
int main(){
	ios_base::sync_with_stdio(0),cin.tie(0);
	solve();
}

Compilation message (stderr)

genetics.cpp: In function 'void solve()':
genetics.cpp:70:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |  for(int i=1;i<kand.size();i++){
      |              ~^~~~~~~~~~~~

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