https://vjudge.net/problem/Gym-102680D/origin
https://vjudge.net/contest/396206#problem/D
Hooray! It's time for the obligatory problem concerning the random mathematical properties of an arbitrary number! And since today is the 1st Brookfield Computer Programming Challenge, this year's number is 1!
One is a pretty unique number. Of course, it is the multiplicative identity (that is x*1 = x), as well as the smallest natural number. It is sometimes called the loneliest number, the maximum value of Random.nextDouble(), the magnitude of any unit vector, and the only positive number that is a valid digit in any base, as well as power of 2 itself (20=120=1, oh joy!). It is also both the second and third Fibonacci number (0, 1, 1, 2, 3, 5, 8...). In fact, it is the only number to appear a prime number of times in the Fibonacci sequence.
Speaking of primes, whether or not 1 is a prime number has been discussed quite fervently among mathematicians. A prime is a number with exactly two unique natural factors. A composite number is a number with more than two unique natural factors. 7, for example, has factors of 1 and 7, but no others, making it prime. 9 has factors of 1, 3, and 9, making it composite. 1, however, is only divisible by 1, and is therefore neither prime nor composite. Interestingly, 1 is the only number with this property.
Given nn natural numbers, decide whether each of them is prime, composite, or neither. Be careful that your program finishes execution within 5 seconds for any valid input.
Input
The first line will contain an integer nn, the number of natural numbers to compute. nn lines follow, each containing a single integer qiqi
1≤n≤1001≤n≤100
1≤qi≤2∗1091≤qi≤2∗109
Output
Output nn lines, each containing either "Prime", "Composite", or "Neither", depending on the state of each number.
Example
4 9 1 2017 1000000007
Composite Neither Prime Prime
Note
9 has 3 factors: 1,3, and 9, and is therefore composite.
1 is discussed in the problem statement.
2017 only has factors of 1 and itself, and is therefore prime.
1000000007 also happens to be prime for the same reason.
#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<bitset>
#include<cassert>
#include<cctype>
#include<cmath>
#include<cstdlib>
#include<ctime>
#include<deque>
#include<iomanip>
#include<list>
#include<map>
#include<queue>
#include<set>
#include<stack>
#include<vector>
#include <vector>
#include <iterator>
#include <utility>
#include <sstream>
#include <limits>
#include <numeric>
#include <functional>
using namespace std;
#define gc getchar()
#define mem(a) memset(a,0,sizeof(a))
#define debug(x) cout<<"debug:"<<#x<<" = "<<x<<endl;
#define ios ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int,int> pii;
typedef char ch;
typedef double db;
const double PI=acos(-1.0);
const double eps=1e-6;
const int inf=0x3f3f3f3f;
//const int maxn=1e5+10;
const int maxn = 5010;
//const int maxm=100+10;
const int N=1e6+10;
const int mod=1e9+7;
bool isPrime(int Check)
{
int min = Check < sqrt(Check)+1 ? Check : sqrt(Check)+1;
for(int i = 2;i<min;i++)
{
if(Check % i == 0)
{
return 0;
}
}
return 1;
}
int main()
{
int T = 0;
cin >> T;
while(T--)
{
int Check;
cin >> Check;
if(Check == 1)
{
cout << "Neither" << endl;
continue;
}
if( isPrime(Check) )
{
cout << "Prime" << endl;
}
else
{
cout << "Composite" << endl;
}
}
return 0;
}