제출 #704762

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
704762		pcc	Lutrija (COCI19_lutrija)	C++14	14 / 70	139 ms	276 KiB

lutrija

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

#define ll long long
bool isp(ll k){
    if(k == 0)return false;
    if(k == 1)return false;
    for(ll i = 2;i*i<=k;i++){
        if(k%i == 0)return false;
    }
    return true;
}
map<ll,ll> mp;
int main(){
    ll a,b;
    cin>>a>>b;
    vector<ll> ans;
    bool rev = false;
    if(a>b){
        rev = true;
        swap(a,b);
    }
    ans.push_back(a);
    if(a == 2){
        if(isp(b+2)&&isp(b+2-a))ans = {2,b+2,b};
        else if(isp(b-2)&&isp(b-2-a))ans = {2,b-2,b};
        else{
            cout<<-1;
            return 0;
        }
    }
    else{
        ans.clear();
        for(ll i = a;i<=b&&isp(i);i+=2){
            ans.push_back(i);
        }
        if(ans.back() != b){
            ans.clear();
        }
        if(ans.empty()){
            if(isp(a-2)&&isp(b-2))ans = {a,2,b};
        }
    }
    if(ans.empty()||ans.back() != b){
        cout<<-1;
        return 0;
    }
    if(rev)reverse(ans.begin(),ans.end());
    cout<<ans.size()<<'\n';
    for(auto &i:ans)cout<<i<<' ';
    return 0;
}

• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 0 / 7
• Subtask 4: 0 / 7
• Subtask 5: 0 / 7
• Subtask 6: 0 / 7
• Subtask 7: 0 / 7
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• Subtask 10: 0 / 7