Submission #1205500

#	Time	Username	Problem	Language	Result	Execution time	Memory
1205500		tamzid	Mutating DNA (IOI21_dna)	C++20	Compilation error	0 ms	0 KiB

dna

#include <bits/stdc++.h>
#include "dna.h"
using namespace std;

string A,B;
vector<int> a_T,a_A,b_T,b_A,diff;

void init(std::string a, std::string b) {
	A = a;
	B = b;
	a_A.resize(A.size()+1,0);
	b_A.resize(A.size()+1,0);
	b_T.resize(A.size()+1,0);
	a_T.resize(A.size()+1,0);
	diff.resize(A.size()+1,0);
	for(int i=0;i<A.size();++i)
	{
		a_A[i+1]+=a_A[i];
		a_T[i+1]+=a_T[i];
		b_A[i+1]+=b_A[i];
		b_T[i+1]+=b_T[i];
		diff[i+1]+=diff[i];
		if(A[i] == 'A')
			++a_A[i+1];
		else
			++a_T[i+1];
		if(B[i] == 'A')
			++b_A[i+1];
		else
			++b_T[i+1];
		if(A[i] != B[i])
		{
			++diff[i+1];
		}
	}
}

bool check()
{
	return count(A.begin(),A.end(),'C') + count(B.begin(),B.end(),'C') > 0;
}

int get_distance(int x, int y) {
	if(y - x <=2 && check())
	{
		if(y - x == 0)
		{
			if(A[x] == B[x])
				return 0;
			else
				return -1;
		}
		else if(y - x == 1)
		{
			if((A[x] == B[x] && A[x+1] == B[x+1]))
				return 0;
			if((A[x] == B[x+1] && A[x+1] == B[x]))
				return 1;
			return -1;
		}
		else
		{
			int at = a_T[y+1] - a_T[x];
	int aa = a_A[y+1] - a_A[x];
	int bt = b_T[y+1] - b_T[x];
	int ba = b_A[y+1] - b_A[x];
	int difff = diff[y+1] - diff[x];
	if(difff & 1)
		return -1;
	if(at != bt || aa != ba)
		return -1;
	return difff / 2;
	}
}

Compilation message (stderr)

dna.cpp: In function 'int get_distance(int, int)':
dna.cpp:74:2: error: expected '}' at end of input
   74 | }
      |  ^
dna.cpp:43:32: note: to match this '{'
   43 | int get_distance(int x, int y) {
      |                                ^
dna.cpp:74:2: warning: control reaches end of non-void function [-Wreturn-type]
   74 | }
      |  ^