Submission #1142025

#	Time	Username	Problem	Language	Result	Execution time	Memory
1142025		techvio	Mutating DNA (IOI21_dna)	C++20	43 / 100	1595 ms	2376 KiB

dna

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

string sa;
string sb;

void init(std::string a, std::string b) {
	sa = a;
	sb = b;
}

int get_distance(int x, int y) {
	string suba = sa.substr(x, y - x+1);
	string subb = sb.substr(x, y - x+1);
		int cca = 0, cta = 0, caa = 0, ccb = 0, ctb = 0, cab = 0;
		for (char c : suba) {
			if (c == 'A') caa++;
			else if (c == 'T') cta++;
			else cca++;
		}
		for (char c : subb) {
			if (c == 'A') cab++;
			else if (c == 'T') ctb++;
			else ccb++;
		}
		int c = 0;
		if (ccb != cca || cab != caa || ctb != cta) return -1;
		else {
			for (int i = 0; i < suba.size(); i++) if (suba[i] != subb[i]) c++;
			int ans = (c+1) / 2;
			return ans;
		}
	return 0;
}

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