제출 #936635

#제출 시각아이디문제언어결과실행 시간메모리
936635WarinchaiLutrija (COCI19_lutrija)C++14
0 / 70
1 ms600 KiB
#include<bits/stdc++.h>
using namespace std;
bool check(long long x){
    long long s=sqrt(x);
    for(long long i=2;i<=s;i++){
        if(x%i==0)return 0;
    }
    return 1;
}
int main(){
    long long a,b;cin>>a>>b;
    if(check(abs(b-a)))cout<<2<<"\n"<<a<<" "<<b;
    else if(a==2&&check(b+2))cout<<3<<"\n"<<a<<" "<<b+2<<" "<<b;
    else if(b==2&&check(a+2))cout<<3<<"\n"<<a<<" "<<a+2<<" "<<b;
    else cout<<-1;
}
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