제출 #1061647

#제출 시각아이디문제언어결과실행 시간메모리
1061647amine_arouaDNA 돌연변이 (IOI21_dna)C++17
100 / 100
135 ms43196 KiB
#include "dna.h" #include<bits/stdc++.h> using namespace std; int code(char c) { if(c == 'A') return 0; if(c == 'C') return 1; return 2; } vector<vector<vector<int>>> pref; vector<vector<vector<int>>> occ; void init(std::string a, std::string b) { int n = (int)a.size(); pref.assign(n + 1 , vector<vector<int>>(3 , vector<int>(3 , 0))); occ = pref; a = '.' + a; b = '.' + b; for(int i = 1 ; i <= n ; i++) { for(int j = 0 ; j < 3 ; j++) { occ[i][0][j] = occ[i - 1][0][j]; occ[i][1][j] = occ[i - 1][1][j]; for(int k = 0 ;k < 3 ; k++) { pref[i][j][k]+=pref[i - 1][j][k]; } } occ[i][0][code(a[i])]++; occ[i][1][code(b[i])]++; pref[i][code(a[i])][code(b[i])]++; } } int get_distance(int x, int y) { x++ , y++; for(int i = 0 ; i < 3 ; i++) { if(occ[y][0][i] - occ[x - 1][0][i] != occ[y][1][i] - occ[x - 1][1][i]) { return -1; } } vector<int> r; int ans = 0; for(int i = 0 ; i < 3 ; i++) { for(int j = i + 1 ; j < 3 ; j++) { int a = pref[y][i][j] - pref[x - 1][i][j] , b = pref[y][j][i] - pref[x - 1][j][i]; if(a > b) swap(a , b); ans+=a; b-=a; r.push_back(b); } } for(int i = 0 ;i< min((int)r.size() , 2) ; i++) { ans+=r[i]; } return ans; }
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