Submission #153146

#	Time	Username	Problem	Language	Result	Execution time	Memory
153146		Swan	Genetics (BOI18_genetics)	C++14	100 / 100	1317 ms	19064 KiB

genetics

#include <bits/stdc++.h>
#define stop system("pause")
#define INP freopen("input.txt","r",stdin)
#define OUTP freopen("solve1.txt","w",stdout)
using namespace std;

typedef long long ll;

const int maxn = 4111;

int cnt[maxn][5];
int n,m,k;

struct st{
    string s;
    int id;
    st(string a,int b){
        s = a;
        id = b;
    }
};

bool cmp(string& a,string& b){
    int res = 0;
    for(int i(0); i < a.size();i++){
        if(a[i]!=b[i])res++;
    }
    return res == k;
}

int get_num(char c){
    if(c == 'A')return 0;
    if(c == 'C')return 1;
    if(c == 'T')return 2;
    return 3;
}

main()
{
    ios_base::sync_with_stdio(0);
    cin >> n >> m >> k;
    int need = (n-1)*k;
    vector<st> v;
    for(int i(0); i < n;i++){
        string s; cin >> s;
        v.push_back({s,i});
        for(int j(0); j < s.size();j++){
            cnt[j][get_num(s[j])]++;
        }
    }
    mt19937 gen(0);
    shuffle(v.begin(),v.end(),gen);
    //cout << endl;
    //for(int i(0); i < n;i++)cout << v[i].s << endl;
    for(int i(0); i < n;i++){
        int all = 0;
        for(int j(0); j < v[i].s.size();j++){
            int now = get_num(v[i].s[j]);
            for(int e(0); e < 4;e++){
                if(e == now)continue;
                all+=cnt[j][e];
            }
        }
        //cout << i+1 << ' ' << all << ' ' << need << endl;
        if(all!=need)continue;
        bool f = 1;
        for(int j(0); j < n;j++){
            if(i == j)continue;
            if(!cmp(v[i].s,v[j].s)){
                f = 0;
                break;
            }
        }
        if(f){
            cout << v[i].id+1;
            return 0;
        }
    }
    return 0;
}
/*
*/

Compilation message (stderr)

genetics.cpp: In function 'bool cmp(std::__cxx11::string&, std::__cxx11::string&)':
genetics.cpp:25:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i(0); i < a.size();i++){
                   ~~^~~~~~~~~~
genetics.cpp: At global scope:
genetics.cpp:38:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
genetics.cpp: In function 'int main()':
genetics.cpp:47:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j(0); j < s.size();j++){
                       ~~^~~~~~~~~~
genetics.cpp:57:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j(0); j < v[i].s.size();j++){
                       ~~^~~~~~~~~~~~~~~

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