제출 #938538

#제출 시각아이디문제언어결과실행 시간메모리
938538Hugo1729DNA 돌연변이 (IOI21_dna)C++17
0 / 100
24 ms3920 KiB
#include "dna.h"
#include <bits/stdc++.h>
using namespace std;
 
string a,b;
int n;
int prefa[100001]={0},prefb[100001]={0},prefm[100001]={0};
 
void init(string c, string d) {
  a=c;b=d;
  n=a.size();
  for(int i=0;i<n;i++){
    prefa[i+1]=prefa[i];
    prefb[i+1]=prefb[i];
    prefm[i+1]=prefm[i];
    if(a[i]=='A')prefa[i+1]++;
    if(b[i]=='A')prefb[i+1]++;
    if(a[i]==b[i])prefm[i+1]++;
  }
    
}
 
int get_distance(int x, int y) {
  int dista=prefa[y+1]-prefa[x];
  int distb=prefb[y+1]-prefb[x];
  int distm=prefm[y+1]-prefm[x];
 
  if(dista!=distb)return -1;
  else{
    return distm/2;
  }
}
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