Submission #448423

#	Time	Username	Problem	Language	Result	Execution time	Memory
448423		osmanallazov	Palindrome-Free Numbers (BOI13_numbers)	C++14	24.17 / 100	1098 ms	292 KiB

numbers

#include <bits/stdc++.h>
#define ll long long
using namespace std;
bool check(string s){
    for(int i=0;i<s.size();i++){
        string k="";
        k+=s[i];
        for(int j=i+1;j<s.size();j++){
            k+=s[j];
            string l=k;
            reverse(l.begin(),l.end());
            if(k==l){
                return false;
            }
        }
    }
    return true;
}
int main(){
    ll a,b,say=0;
    cin>>a>>b;
    for(int i=a;i<=b;i++){
        string s=to_string(i);
        if(check(s)){
            say++;
        }
    }
    cout<<say;
}

Compilation message (stderr)

numbers.cpp: In function 'bool check(std::string)':
numbers.cpp:5:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 |     for(int i=0;i<s.size();i++){
      |                 ~^~~~~~~~~
numbers.cpp:8:24: 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 j=i+1;j<s.size();j++){
      |                       ~^~~~~~~~~

• Subtask 1: 22.5 / 25
• Subtask 2: 1.6666666666666667 / 75