Submission #716238

#	Time	Username	Problem	Language	Result	Execution time	Memory
716238		kidlin	Mutating DNA (IOI21_dna)	C++17	Compilation error	0 ms	0 KiB

dna

#include "dna.h"
#include<bits/stdc++.h>
#define int long long
#define endul endl
using namespace std;
const int val = 1e3+5;
const int inf  = 2*(1e9+5);
const int mod = 1000000007;
int a[val];
int b[val];
void solve()
{
    int n,q;
    cin >> n >> q;
    string s,t;
    cin >> s >> t;
    for(int i=0;i<q;i++)
    {
        int x,y;
        cin >> x >> y;
        int T0=0,C0=0,A0=0,T1=0,A1=0,C1=0;
            int res=0;
        for(int j=x;j<=y;j++)
        {
            if(s[j]=='T') T0++;
            if(s[j]=='C') C0++;
            if(s[j]=='A') A0++;
            if(t[j]=='T') T1++;
            if(t[j]=='C') C1++;
            if(t[j]=='A') A1++;
            if(s[j]!=t[j]) res++;
        }
        if(T0!=T1 || C0!=C1 || A1!=A0)
        {
            cout << -1 << endl;
        }
        else
        {
            if(res%2==0) cout << res/2 << endl;
            else cout << res/2+1 << endl;
        }
    }
}
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t=1;
    //cin >> t;
    while(t--)
    {
        solve();
    }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccU1vD9c.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccLMA0ea.o:dna.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccU1vD9c.o: in function `main':
grader.cpp:(.text.startup+0x366): undefined reference to `init(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
/usr/bin/ld: grader.cpp:(.text.startup+0x39d): undefined reference to `get_distance(int, int)'
collect2: error: ld returned 1 exit status