Submission #473709

#	Time	Username	Problem	Language	Result	Execution time	Memory
473709		Blobo2_Blobo2	Genetics (BOI18_genetics)	C++17	0 / 100	99 ms	3916 KiB

genetics

/*
Editor: Abdelrahman Hossam
Nickname: Blobo2_Blobo2
IOI next year isA :)
*/
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,sse4.2,popcnt,abm,mmx,avx2")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-funroll-all-loops,-fpeel-loops,-funswitch-loops")

#include<bits/stdc++.h>
using namespace std;
//#define int long long
//#define int __int16_t
#define endl "\n"
#define all(v)  v.begin(),v.end()
#define gen(arr,n,nxt)  generate(arr,arr+n,nxt)
#define Blobo2_el_7akim_elly_3ayz_yro7_IOI_w_3ayz_yakol_jilaty ios_base::sync_with_stdio(false);cin.tie(0);
#define EPS 0.00000001

const int mo=1e9+7,INF=1e18;
int nxt(){int x;cin>>x;return x;}
int rand(int l, int r){
  static mt19937
  rng(chrono::steady_clock::now().time_since_epoch().count());

  uniform_int_distribution<int> ludo(l, r);
  return ludo(rng);
}
bitset<4100>ok;
//bitset<4100> a[4100];
vector<int>good,all;
bool vis[4100][4100];
unsigned long long a[4100][65];
int GETA(int x,int y){
    int CNT=0;
    for(int i=0;i<65;i++)
        CNT+=__builtin_popcountll((a[x][i]^a[y][i]));
    return CNT;
}
signed main(){
    Blobo2_el_7akim_elly_3ayz_yro7_IOI_w_3ayz_yakol_jilaty
    //freopen("in.txt","r",stdin);
    mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
    int n=nxt(),m=nxt(),k=nxt();
    string dna[n];
    bool hacheck_keda_7aga_bas = 0;
    for(int i=0;i<n;i++){
        cin>>dna[i];
        hacheck_keda_7aga_bas |= count(all(dna[i]),'G');
        hacheck_keda_7aga_bas |= count(all(dna[i]),'T');
    }
    if(hacheck_keda_7aga_bas){
        for(int i=0;i<n;i++)
            good.push_back(i),all.push_back(i);
        while(good.size()>1){
            shuffle(all(good),rng);
            shuffle(all(all),rng);
            for(int i=0;i<all.size();i++){
                if(good.back() == all[i])continue;
                int ok=0;
                for(int a=0;a<m;a++)
                    ok += (dna[all[i]][a] != dna[good.back()][a]);
                if(ok != k)
                    goto tooooooooooo;
            }
            cout<<good.back()+1;
            return 0;
            tooooooooooo:;
            good.pop_back();
        }
        cout<<good[0]+1;
    }
    else{
        for(int i=0;i<n;i++){
            for(int j=0;j<m;j++){
                unsigned long long z=((unsigned long long)1<<j%64);
                if(dna[i][j] == 'C')
                    a[i][j/64] = 1;
            }
        }
        for(int i=0;i<n;i++)
            good.push_back(i),all.push_back(i);
        while(good.size()>1){
            shuffle(all(good),rng);
            shuffle(all(all),rng);
            for(int i=0;i<all.size();i++){
                if(good.back() == all[i])continue;
                if(vis[all[i]][good.back()])continue;
                if(GETA(all[i],good.back()) != k)
                    goto toooooooooooo;
                vis[all[i]][good.back()]=1;
                vis[good.back()][all[i]]=1;
            }
            cout<<good.back()+1;
            return 0;
            toooooooooooo:;
            good.pop_back();
        }
        cout<<good[0]+1;
    }
    return 0;
}

Compilation message (stderr)

genetics.cpp:22:24: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   22 | const int mo=1e9+7,INF=1e18;
      |                        ^~~~
genetics.cpp: In function 'int main()':
genetics.cpp:60:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |             for(int i=0;i<all.size();i++){
      |                         ~^~~~~~~~~~~
genetics.cpp:78:36: warning: unused variable 'z' [-Wunused-variable]
   78 |                 unsigned long long z=((unsigned long long)1<<j%64);
      |                                    ^
genetics.cpp:88:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |             for(int i=0;i<all.size();i++){
      |                         ~^~~~~~~~~~~

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