66分求大佬援助!!!

P1217 [USACO1.5] 回文质数 Prime Palindromes

jiangyixuan_eason @ 2024-08-29 13:07:10

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

bool isPrime(int n){
    bool x=true;
    for(int i=2;i<n;i++){
        if(n%i==0){
            x=false;
            break;
        }
    }
    return x;
}
bool palindromes(int n){
    string s1=to_string(n);
    string s2=to_string(n);
    reverse(s1.begin(),s1.end());
    if(s1 == s2){
        return true;
    }
    return false;
    int j=s1.size();
    int m=n%10*pow(10,j-1);
    for(int i=1;i<j;i++){
        int t=pow(10,i);
        m+=n/t%10*pow(10,j-1-i);
    }
    if(m==n){
        return true;
    }
    else{
        return false;
    }
}
int main(){
    int a,b;
    cin >>a>>b;
    for(int i=a;i<=b;i++){
        if(isPrime(i)){
            if(palindromes(i)){
            cout <<i<<endl;
            }
        }
    }
    return 0;
}

by chengjindong @ 2024-08-29 13:35:03


by chengjindong @ 2024-08-29 13:35:28

蟹蟹,回了


by jiangyixuan_eason @ 2024-08-29 13:50:22

已关


by 202312900205fjc @ 2024-09-02 21:01:47

@chengjindong 大佬


by chengjindong @ 2024-09-03 16:47:19

@202312900205fjc 啊?


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