Submission #1141852

#	Time	Username	Problem	Language	Result	Execution time	Memory
1141852		FZ_Laabidi	Mutating DNA (IOI21_dna)	C++20	Compilation error	0 ms	0 KiB

dna

#include<bits/stdc++.h>
#define int long long
using namespace std;
int n, q; 
string a, b; 
void init(string a, string b){}
int get_distance(int x, int y){
    int dist = y-x+1;
    string s1="", s2="";
    map<int, int> freq1, freq2;
    for(int i = x; i<=y; i++){
        s1.push_back(a[i]);
        s2.push_back(b[i]);
        freq1[a[i]]++;
        freq2[b[i]]++;
    }
    for(char c: s1){
        if(freq1[c]!=freq2[c])return -1;
    }

    int maxi = dist-1;
    for(int i=0; i<dist; i++)if(s1[i]==s2[i])maxi--;
    return maxi;
}

signed main(){
    int sum =0;
    cin>>n>>q;
    cin >>a>>b;
    for(int i=0; i<n; i++){
        int x, y; cin >>x>>y;
        cout <<get_distance(x, y)<< endl;
    }
    
    
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccCwF8An.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccBHCjnv.o:dna.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccCwF8An.o: in function `main':
grader.cpp:(.text.startup+0x39a): undefined reference to `get_distance(int, int)'
collect2: error: ld returned 1 exit status