제출 #831780

#제출 시각아이디문제언어결과실행 시간메모리
831780MrDebooDNA 돌연변이 (IOI21_dna)C++17
0 / 100
31 ms6072 KiB
#include "dna.h"
#include "bits/stdc++.h"
using namespace std;
int n;
int g[3][3][100000];
string f="ACT";
void init(std::string a, std::string b) {
	n=a.size();
	for(int i=0;i<3;i++){
		for(int w=0;w<3;w++){
			for(int j=0;j<n;j++){
				if(a[j]==f[i]&&b[j]==f[w])g[i][w][j]++;
				if(j)g[i][w][j]+=g[i][w][j-1];
			}
		}
	}
}

int get_distance(int l, int r) {
	int G[3][3];
	for(int i=0;i<3;i++){
		for(int w=0;w<3;w++)G[i][w]=g[i][w][r]-(l==0?0:g[i][w][l-1]);
	}
	int ans=G[0][1]+G[1][2]+G[0][2]+G[1][0]+G[2][1]+G[2][0],a=n-ans*2-G[0][0]-G[1][1]-G[2][2];
	return ans+(a/3)*2;
}
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