Submission #855188

#	Time	Username	Problem	Language	Result	Execution time	Memory
855188		ThylOne	Palindrome-Free Numbers (BOI13_numbers)	C++14	38.33 / 100	1094 ms	600 KiB

numbers

#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
bool isfree(ll n){
	string re = to_string(n);
	if(re[0]==re[1])return false;
	for(int i=2;i<re.size();i++){
		if(re[i]==re[i-1] || re[i]==re[i-2]){
			return false;
		}
	}
	return true;
}
signed main(){
	ll a,b;
	cin>>a>>b;
	int cnt=0;
	for(ll i=a;i<=b;i++){
		cnt+=isfree(i);
	}
	cout<<cnt<<endl;
	return 0;
}

Compilation message (stderr)

numbers.cpp: In function 'bool isfree(ll)':
numbers.cpp:8:15: 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=2;i<re.size();i++){
      |              ~^~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 13.333333333333334 / 75