Submission #838963

#	Time	Username	Problem	Language	Result	Execution time	Memory
838963		Alfraganus	Mutating DNA (IOI21_dna)	C++17	0 / 100	21 ms	10844 KiB

dna

#include "dna.h"
// #include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;

vector<vector<int>> a1, a2, as, bs;
void init(string a, string b)
{
	int n = a.size();
	for (int i = 0; i < n; i++)
	{
		if (a[i] == 'T')
			a[i] = 'B';
		if (b[i] == 'T')
			b[i] = 'B';
	}
	a1.resize(3, vector<int>(3));
	as.resize(3, vector<int>(n + 1));
	bs.resize(3, vector<int>(n + 1));
	for (int i = 0; i < n; i++)
	{
		as[i + 1] = as[i];
		as[i + 1][a[i] - 'A']++;
		bs[i + 1] = bs[i];
		bs[i + 1][b[i] - 'A']++;
		a1[b[i] - 'A'][a[i] - 'A']++;
	}
}

int get_distance(int x, int y)
{
	if (as[y][0] - as[x - 1][0] == bs[y][0] - bs[x - 1][0] && as[y][1] - as[x - 1][1] == bs[y][1] - bs[x - 1][1] && as[y][2] - as[x - 1][2] == bs[y][2] - bs[x - 1][2])
	{
		int ans = y - x + 1;
		for (int i = 0; i < 3; i++)
			for (int j = 0; j < 3; j++)
				ans -= min(a1[i][j], a1[j][i]);
		return ans;
	}
	return 0;
}

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