Submission #1142023

#	Time	Username	Problem	Language	Result	Execution time	Memory
1142023		mehdiba	DNA 돌연변이 (IOI21_dna)	C++20	0 / 100	1602 ms	916236 KiB

dna

#include "dna.h"
#include <bits/stdc++.h>
#define endl '\n'
#define pb push_back
#define F first
#define S second
#define all(v) v.begin(), v.end()
#define allr(v) v.rbegin(), v.rend()
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
string a, b;
unordered_map<string, bool> vis;

int dfs(string x, string t, int cnt){
	if(vis[x]) return -1;
	vis[x] = 1;
	if(x == t) return cnt;
	string t1 = x, t2 = x, t3 = x;
	swap(t1[0], t1[1]);
	int c1 = dfs(t1, t, cnt + 1);
	swap(t2[0], t2[2]);
	int c2 = dfs(t2, t, cnt + 1);
	swap(t3[1], t3[2]);
	int c3 = dfs(t3, t, cnt + 1);
	if(c1 == -1 && c2 == -1 && c3 == -1) return -1;
	return max(c1, max(c2, c3));
}

void init(string A, string B){
	a = A;
	b = B;
}

int get_distance(int x, int y){
	string aa = a.substr(x, y), bb = b.substr(x, y);
	return dfs(aa, bb, 0);
}

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