/**
* author: DespicableMonkey
* created: 06.25.2021 16:56:34
* Potatoes FTW!
**/
#include<bits/stdc++.h>
using namespace std;
int cnt[2][3][100005];
int differs[100005];
int N;
void init(string a, string b) {
N = (a).size();
for(int i = 0; i < N; ++i)
++cnt[0][a[i] == 'A'? 0 : a[i] == 'T' ? 1 : 2][i],
++cnt[1][b[i] == 'A'? 0 : b[i] == 'T' ? 1 : 2][i],
differs[i] = a[i] != b[i];
for(int i = 0; i < 2; ++i)
for(int j = 0; j < 3; ++j)
partial_sum(cnt[i][j], cnt[i][j] + N, cnt[i][j]);
partial_sum(differs, differs + N, differs);
}
int get_distance(int x, int y) {
vector<vector<int>> cnts(2, vector<int>(3));
for(int i = 0; i < 2; ++i) {
for(int j = 0; j < 3; ++j) {
cnts[i][j] = cnt[i][j][y] - (x == 0 ? 0 : cnt[i][j][x-1]);
}
}
for(int i = 0; i < 3; ++i)
if(cnts[0][i] != cnts[1][i])
return -1;
long long need = differs[y] - (x == 0 ? 0 : differs[x - 1]);
return (need / 2 + !!(need&1));
}
int main() {
init("ATACAT", "ACTATA");
cout << get_distance(3, 5);
return 0;
}
Compilation message
/usr/bin/ld: /tmp/ccfVnvTz.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccHJWzgw.o:dna.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status
