Submission #996784

#	Time	Username	Problem	Language	Result	Execution time	Memory
996784		overwatch9	Mutating DNA (IOI21_dna)	C++17	0 / 100	167 ms	2372 KiB

dna

#include "dna.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
string A, B;
void init(std::string a, std::string b) {
	A = a;
	B = b;
}
int get_distance(int x, int y) {
	string a = A.substr(x, y - x + 1);
	string b = B.substr(x, y - x + 1);
	sort(a.begin(), a.end());
	sort(b.begin(), b.end());
	if (a != b)
		return -1;
	a = A.substr(x, y - x + 1);
	b = B.substr(x, y - x + 1);
	vector <int> ord = {0, 0, 1, 1, 2, 2};
	int ans = 1e9;
	do {
		int tp = 0;
		string tpb = b;
		for (int i = 0; i+1 < 3; i++) {
			if (a == b)
				break;
			swap(tpb[ord[i]], tpb[ord[i+1]]);
			tp++;
		}
		if (a == tpb)
			ans = min(ans, tp);
	} while (next_permutation(ord.begin(), ord.end()));
	return ans;
}

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