Submission #542747

#	Time	Username	Problem	Language	Result	Execution time	Memory
542747		itiam	Lutrija (COCI19_lutrija)	C++11	70 / 70	178 ms	340 KiB

lutrija

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const char r=' ';
const char en='\n';

int prosti(ll a){
    if(a<=1)    return 0;
    for (ll i=2;i*i<=a;i++){
        if (a%i==0) return 0;
    }
    return 1;
}

int main(){
    ll a,b;
    cin >> a >> b;

    if (a==2){
        if (prosti(b+2)){
            cout << 3 << en << a << r << b+2 << r<< b;
            return 0;
        }
        if (prosti(b-2)){
            cout << 2 << en << a << r << b;
            return 0;
        }
        cout << -1;
        return 0;
    }
    if (b==2){
        if (prosti(a+2)){
            cout << 3 << en << a << r << a+2 << r<< b;
            return 0;
        }
        if (prosti(a-2)){
            cout << 2 << en << a << r << b;
            return 0;
        }
        cout << -1;
        return 0;
    }
    if (prosti(a+2)){
        if (prosti(b+2)){
            cout << 5 << en << a << r << a+2 << r << 2 << r<< b+2 << r<< b;
            return 0;
        }
        if (prosti(b-2)){
            cout << 4 << en << a << r << a+2 << r << 2 << r<< b;
            return 0;
        }
        cout << -1;
        return 0;
    }
    if (prosti(a-2)){
        if (prosti(b+2)){
            cout << 4 << en << a << r << 2 << r<< b+2 << r<< b;
            return 0;
        }
        if (prosti(b-2)){
            cout << 3 << en << a << r << 2 << r<< b;
            return 0;
        }
        cout << -1;
        return 0;
    }
    cout << -1;
    return 0;
}

• 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