Submission #936644

#	Time	Username	Problem	Language	Result	Execution time	Memory
936644		Warinchai	Lutrija (COCI19_lutrija)	C++14	70 / 70	219 ms	432 KiB

lutrija

#include<bits/stdc++.h>
using namespace std;
bool check(long long x){
    if(x<2)return 0;
    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 if(check(a+2)&&check(b-2))cout<<4<<"\n"<<a<<" "<<a+2<<" "<<2<<" "<<b;
    else if(check(a-2)&&check(b+2))cout<<4<<"\n"<<a<<" "<<2<<" "<<b+2<<" "<<b;
    else if(check(a-2)&&check(b-2))cout<<3<<"\n"<<a<<" "<<2<<" "<<b;
    else if(check(a+2)&&check(b+2))cout<<5<<"\n"<<a<<" "<<a+2<<" "<<2<<" "<<b+2<<" "<<b;
    else cout<<-1;
}

• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 7 / 7
• Subtask 4: 7 / 7
• Subtask 5: 7 / 7
• Subtask 6: 7 / 7
• Subtask 7: 7 / 7
• Subtask 8: 7 / 7
• Subtask 9: 7 / 7
• Subtask 10: 7 / 7