Submission #1142551

#	Time	Username	Problem	Language	Result	Execution time	Memory
1142551		sam12345678910112	Mutating DNA (IOI21_dna)	C++20	Compilation error	0 ms	0 KiB

dna

 #include<bits/stdc++.h>
using namespace std;
# define ll long long
string A ,B;
ll f[100003];
ll fra[100003];
ll frt[100003];
ll fra2[100003];
ll frt2[100003];
void init(string a, string b){
    string A=a;
    string B=b;
    for(int so=0;so<A.size();so++){
        f[so]=0;
        if(so!=0){f[so]+=f[so];}
        if(A[so]!=B[so]){ f[so]+=1;}
        if(A[so]=='T'){frt[so]=0;frt[so]+=1+frt[max(so-1,0)];}
          if(A[so]=='A'){fra[so]=0;fra[so]+=1+fra[max(so-1,0)];}
           if(B[so]=='T'){frt2[so]=0;frt2[so]+=1+frt2[max(so-1,0)];}
          if(B[so]=='A'){fra2[so]=0;fra2[so]+=1+fra2[max(so-1,0)];}
    }
}
ll get_distance(ll x, ll y){
    if(frt[y]-frt[x]==frt2[y]-frt2[x]&&fra[y]-fra[x]==fra2[y]-fra2[x]){return f[y]-f[x];}
    else{ return -1;}
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccT8Fypq.o: in function `main':
grader.cpp:(.text.startup+0x39a): undefined reference to `get_distance(int, int)'
collect2: error: ld returned 1 exit status