Submission #1120831

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120831		vjudge1	Palindrome-Free Numbers (BOI13_numbers)	C++14	42.50 / 100	1095 ms	508 KiB

numbers

//#pragma GCC optimize ("O1")
#include <bits/stdc++.h>

using namespace std;

#define endl '\n'
#define pb push_back
#define F first
#define S second
#define ll long long
//#define int ll
#define pii pair<int, int>
#define io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define M_PI 3.14159265358979323846
#define all(v) v.begin(), v.end()
#define pss pair<string, string>
#define no cout<<"NO"<<endl;
#define yes cout<<"YES"<<endl;
#define imp cout<<-1<<endl;
#define flu cout.flush();
#define Endl endl

const int N = 300009;
const int mod = 1e9+7;

bool pol(string s){
    string q=s;
    reverse(all(q));
    if(q==s){
        return true;
    }
    else{
        return false;
    }
}

bool haspo(int n){
    string s="";
    vector<int>a;
    while(n>0){
        a.pb(n%10);
        n=n/10;
    }
    reverse(all(a));
    for(int i : a){
        s=s+char(i+48);
    }
    n=s.size();
    for(int i=0; i<n; i++){
        for(int j=i+1; j<n; j++){
            string q="";
            for(int k=i; k<=j; k++){
                q+=s[k];
            }
            if(pol(q)){
                return false;
            }
        }
    }
    return true;
}

void solve(){
    int a, b;
    cin>>a>>b;
    int cnt=0;
    for(int i=a; i<=b; i++){
        if(haspo(i)){
            cnt++;
        }
    }
    cout<<cnt<<endl;
}

signed main(){
    //io;
    int t=1;
    //cin>>t;
    while(t--){
        solve();
    }
}

• Subtask 1: 22.5 / 25
• Subtask 2: 20 / 75