#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;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
432 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
190 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
190 ms |
404 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
219 ms |
404 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
181 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |