Submission #1215585

#	Time	Username	Problem	Language	Result	Execution time	Memory
1215585		cz_dani	Mutating DNA (IOI21_dna)	C++20	22 / 100	1597 ms	2376 KiB

dna

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

string s, t;

void init(std::string a, std::string b) {
	s=a;
	t=b;
}

int get_distance(int x, int y) {
	int sa = 0, st = 0, ta = 0, tt = 0;
	for (int i = x; i <= y; i++) {
		if (s[i]=='A')sa++;
		else st++;
		if (t[i]=='A')ta++;
		else tt++;
	}
	if (sa!=ta) {
		return -1;
	}
	int ans = 0;
	for (int i = x; i <= y; i++) {
		if (s[i]!=t[i])ans++;
	}
	return ans/2;
}

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