Submission #653997

#	Time	Username	Problem	Language	Result	Execution time	Memory
653997		Blagoj	Mutating DNA (IOI21_dna)	C++17	43 / 100	1564 ms	3772 KiB

dna

#include "dna.h"
#include <bits/stdc++.h>

using namespace std;

string a, b;

void init(std::string a1, std::string b1) 
{
	a = a1;
	b = b1;
}

int get_distance(int x, int y) {

	string c = a;
	int cnt = 0;
	bool possible = true;
	for (int i = x; i <= y; i++)
	{
		if (c[i] != b[i])
		{
			for (int j = i + 1; j <= y; j++)
			{
				if ((c[j] == b[i] && c[j] != b[j]) || (c[j] == b[i] && c[i] == b[j]))
				{
					swap(c[i], c[j]);
					cnt++;
					break;
				}
			}
			if (c[i] != b[i])
			{
				for (int j = i + 1; j <= y; j++)
				{
					if (c[j] == b[i] && c[j] != b[j])
					{
						swap(c[i], c[j]);
						cnt++;
						break;
					}
				}	
			}
			if (c[i] != b[i])
			{
				possible = false;
				break;
			}
		}
	}
	if (!possible)
	{
		return -1;
	}
	return cnt;
}

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