Submission #1033472

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033472		PokemonMaster	Mutating DNA (IOI21_dna)	C++17	Compilation error	0 ms	0 KiB

dna

#include<bits/stdc++.h>
using namespace std;
#define int long long 
int n,q;
string a,b;
void init(string a,string b)
{
    cin>>a>>b;
}
int get_distance(int x,int y)
{
        string na="",nb="";
        map <char,int> mp1,mp2;
        for(int i=x;i<=y;i++)
        {
            na+=a[i];
            nb+=b[i];
        }
        string ca=na,cb=nb;
        sort(ca.begin(),ca.end());
        sort(cb.begin(),cb.end());
        if(ca!=cb)
        {
            return -1;
        }
        int cnt=0,res=0;
        while(na!=nb)
        {
            int ind=0;
            for(int j=cnt;j<=n;j++)
            {
                if(na[j]==nb[cnt])
                {
                    ind=j;
                    break;
                }
            }
            while(ind!=cnt)
            {
                swap(na[ind],na[ind-1]);
                ind--;
                res++;
            }
            cnt++;
        }
        return res;
}
signed main()
{
    ios::sync_with_stdio(0);
    cin>>n>>q;
    cin>>a>>b;
    for(int i=1;i<=q;i++)
    {
        int l,r;
        cin>>l>>r;
        cout<<get_distance(l,r)<<endl;
    }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccSwNIqJ.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccYkZOmJ.o:dna.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccSwNIqJ.o: in function `main':
grader.cpp:(.text.startup+0x39d): undefined reference to `get_distance(int, int)'
collect2: error: ld returned 1 exit status