Submission #1363574

#	Time	Username	Problem	Language	Result	Execution time	Memory
1363574		yavor_ptv	Mutating DNA (IOI21_dna)	C++20	0 / 100	12 ms	2860 KiB

dna

// SUBTASK 1 -> 3
#include <bits/stdc++.h>
#include "dna.h"
//#include "grader.cpp"

using namespace std;

string a, b;
vector <int> pref;

void init(string A, string B)
{
    a = A;
    b = B;
    int n = a.size();
    pref.clear();
    pref.resize(n);

    for (int i = 0; i < n; i++)
    {
        if (a[i] != b[i])
        {
            pref[i] = i > 0 ? pref[i - 1] + 1 : 1;
        }
        else pref[i] = i > 0 ? pref[i - 1] : 0;
    }
}

int get_distance(int x, int y)
{
    int br = x > 0 ? pref[y] - pref[x - 1] : pref[y];
    return br % 2 == 0 ? br / 2 : -1;
}



/*
6 3
ATACAT
ACTATA
1 3
4 5
3 5


2
1
-1
*/

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