Submission #468371

#	Time	Username	Problem	Language	Result	Execution time	Memory
468371		fun_day	Mutating DNA (IOI21_dna)	C++17	Compilation error	0 ms	0 KiB

dna

#include <bits/stdc++.h>
#define int long long

using namespace std;

int n;
vector<int> a , b , c , a_t , b_t , c_t , pref;

void init(string s , string t){
  n = (int)s.length();
  a.resize(n + 1); b.resize(n + 1); c.resize(n + 1); a_t.resize(n + 1); b_t.resize(n + 1); c_t.resize(n + 1); pref.resize(n + 1);
  for(int i = 0 ; i < n ; i++){
    pref[i+1] = pref[i] + (s[i] != t[i]);    
  }
  for(int i = 0 ; i < n ; i++){
    a[i + 1] = a[i] + (s[i] == 'A');
    a_t[i + 1] = a_t[i] + (t[i] == 'A');
    b[i + 1] = b[i] + (s[i] == 'T');
    b_t[i + 1] = b_t[i] + (t[i] == 'T');
    c[i + 1] = c[i] + (s[i] == 'C');
    c_t[i + 1] = c_t[i] + (t[i] == 'C');
  }
  return ;
}

int get_distance(int x , int y){
  if(a[y + 1] - a[x] == a_t[y + 1] - a_t[x] && b[y + 1] - b[x] == b_t[y + 1] - b_t[x] && c[y + 1] - c[x] == c_t[y + 1] - c_t[x]){
    int p = pref[y + 1] - pref[x];
    return (p + 1) / 2;
  }
  else return -1;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccPqn9OG.o: in function `main':
grader.cpp:(.text.startup+0x39d): undefined reference to `get_distance(int, int)'
collect2: error: ld returned 1 exit status