Submission #934355

#	Time	Username	Problem	Language	Result	Execution time	Memory
934355		AtabayRajabli	Mutating DNA (IOI21_dna)	C++17	0 / 100	23 ms	2832 KiB

dna

#include "dna.h"
#include <bits/stdc++.h>

const int sz = 1e5 + 5;
int p[sz];
void init(std::string a, std::string b) 
{
	for(int i = 0; i < a.size(); i++)
	{
		p[i + 1] = p[i] + int(a[i] != b[i]);
	}
}

int get_distance(int x, int y) {
	x++, y++;
	int v = p[y] - p[x - 1];
	if(v % 2)return -1;
	return v / 2;
}

Compilation message (stderr)

dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:8:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |  for(int i = 0; i < a.size(); i++)
      |                 ~~^~~~~~~~~~

• Subtask 1: 0 / 21
• Subtask 2: 0 / 22
• Subtask 3: 0 / 13
• Subtask 4: 0 / 28
• Subtask 5: 0 / 16