ENG  RUSTimus Online Judge
Online Judge
Problems
Authors
Online contests
About Online Judge
Frequently asked questions
Site news
Webboard
Links
Problem set
Submit solution
Judge status
Guide
Register
Update your info
Authors ranklist
Current contest
Scheduled contests
Past contests
Rules
back to board

Discussion of Problem 1086. Cryptography

AC
Posted by Nguyen Mai Viet Vy 11 Sep 2022 14:32
source code:
#include <bits/stdc++.h>
using namespace std;
#define maxn 10000005
int n;
vector<int>a;
int b[maxn];
int CheckIsPrime(int n)
{
    if(n<2)
        return 0;
    else
    {
        if(n==2)
            return 1;
        else
        {
            if(!(n%2))
                return 0;
            else
            {
                int Sl=sqrt(n);
                for(int i=2;i<=Sl;++i)
                {
                    if(!(n%i))
                        return 0;
                }
            }
        }
    }
    return 1;
}
int main()
{
    ios_base::sync_with_stdio(NULL); cin.tie(0); cout.tie(0);
    cin>>n;
    for(int i=0;i<n;++i)
    {
        int t;
        cin>>t;
        a.push_back(t);
    }
    int ln=*max_element(a.begin(),a.end());
    int check=1;
    int i=2;
    while(ln)
    {
        if(CheckIsPrime(i))
        {
            b[check++]=i;
            ln--;
        }
        i++;
    }
    int size=a.size();
    for(int i=0;i<size;++i)
        cout<<b[a[i]]<<'\n';
    return 0;
}