제출 #704766

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
704766		ancuber1031	Lutrija (COCI19_lutrija)	C++14	14 / 70	43 ms	296 KiB

lutrija

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

#define int long long
#define endl '\n'

bool is_prime(int x) {
    if (x == 2) return 1;
    if (x%2 == 0 || x == 1) return 0;
    for (int i = 3; i*i <= x; i += 2) {
        if (x%i == 0) return 0;
    }
    return 1;
}

signed main() {
    int a, b; cin>>a>>b;
    if (is_prime(abs(a-b))) {
        cout<<2<<endl;
        cout<<a<<' '<<b<<endl;
    } else if (is_prime(a+b)) {
        cout<<3<<endl;
        cout<<a<<' '<<(a+b)<<' '<<b<<endl;
    } else if (is_prime(a-2) && is_prime(b-2)) {
        cout<<3<<endl;
        cout<<a<<' '<<2<<' '<<b<<endl;
    } else if (is_prime(a+2) && is_prime(abs(a+2-b))) {
        cout<<3<<endl;
        cout<<a<<' '<<a+2<<' '<<b<<endl;
    } else if (is_prime(a-2) && is_prime(abs(a-2-b))) {
        cout<<3<<endl;
        cout<<a<<' '<<a-2<<' '<<b<<endl;
    } else {
        cout<<-1<<endl;
    }
    return 0;
}

• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 0 / 7
• Subtask 4: 0 / 7
• Subtask 5: 0 / 7
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• Subtask 10: 0 / 7