Submission #1231318

#	Time	Username	Problem	Language	Result	Execution time	Memory
1231318		yixuan19	Mutating DNA (IOI21_dna)	C++20	21 / 100	29 ms	3180 KiB

dna

#include "dna.h"
#include <vector>
#include <iostream>
#include <unordered_map>
#define N 100001

using namespace std;
vector <int> s1;
vector <int> s2;

unordered_map <char,int> convert;


void init(std::string a, std::string b) {
    convert['A'] = 0;
    convert['C'] = 1;
    convert['T'] = 2;
	for (int i = 0; i < a.size(); ++i){
		s1.push_back(convert[a[i]]);
        s2.push_back(convert[b[i]]);
	}
}

int get_distance(int x, int y) {
    vector<int> occ1(3,0);
    vector<int> occ2(3,0);
    vector<int>section1;
    vector<int>section2;

    for (int i = x; i <= y; ++i){
        occ1[s1[i]]++;
        section1.push_back(s1[i]);
    }
    for (int i = x; i <= y; ++i){
        occ2[s2[i]]++;
        section2.push_back(s2[i]);
    }
    if (occ1 != occ2){
        return -1;
    }
    // for (int i: section1){
    //     cout<<i<<' ';
    // }cout<<endl;
    

    if (section1 == section2){
        return 0;
    }

   swap(section1[0], section1[1]);
   if (section1 == section2){
    return 1;
   }
   swap(section1[0], section1[1]);

   swap(section1[1], section1[2]);
   if (section1 == section2){
    return 1;
   }
   swap(section1[1], section1[2]);

   swap(section1[0], section1[2]);
   if (section1 == section2){
    return 1;
   }
   swap(section1[0], section1[2]);
   return 2;
}

• Subtask 1: 21 / 21
• Subtask 2: 0 / 22
• Subtask 3: 0 / 13
• Subtask 4: 0 / 28
• Subtask 5: 0 / 16