Submission #550233

#	Time	Username	Problem	Language	Result	Execution time	Memory
550233		rafatoa	Mutating DNA (IOI21_dna)	C++17	Compilation error	0 ms	0 KiB

dna

#include <iostream>
#include <string>
#include <cassert>
using namespace std;

#define int long long

int n;
string ga, gb;

void init(string a, string b){
    ga = a; gb = b;
}

int get_distance(int x, int y){
    if(x == y){
        return (ga[x] == gb[x] ? 0 : -1);
    } else if(y-x == 1){
        if(ga[x] == gb[x] && ga[y] == gb[y]) return 0;
        if(ga[y] == gb[x] && ga[x] == gb[y]) return 1;
        else return -1;
    }
    return -1;
}

Compilation message (stderr)

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