Submission #1204603

#	Time	Username	Problem	Language	Result	Execution time	Memory
1204603		tamzid	Mutating DNA (IOI21_dna)	C++20	22 / 100	1594 ms	2376 KiB

dna

#include <bits/stdc++.h>
using namespace std;

string A, B;

void init(string a, string b) {
    A = a;
    B = b;
}

int get_distance(int x, int y) {
    // Count number of 'A's and 'T's
    int aA = 0, aT = 0, bA = 0, bT = 0;
    for (int i = x; i <= y; ++i) {
        if (A[i] == 'A') aA++;
        else aT++;
        if (B[i] == 'A') bA++;
        else bT++;
    }

    if (aA != bA || aT != bT)
        return -1;

    int mismatch = 0;
    for (int i = x; i <= y; ++i) {
        if (A[i] != B[i]) mismatch++;
    }

    if (mismatch % 2 != 0)
        return -1;

    return mismatch / 2;
}

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