sgu 113. Nearly prime numbers 素數

113. Nearly prime numbers

time limit per test: 0.25 sec. 
memory limit per test: 4096 KB

Nearly prime number is an integer positive number for which it is possible to find such primes P1 and P2 that given number is equal to P1*P2. There is given a sequence on N integer positive numbers, you are to write a program that prints “Yes” if given number is nearly prime and “No” otherwise.

Input

Input file consists of N+1 numbers. First is positive integer N (1£N£10). Next N numbers followed by N. Each number is not greater than 109. All numbers separated by whitespace(s).

Output

Write a line in output file for each number of given sequence. Write “Yes” in it if given number is nearly prime and “No” in other case.

Sample Input

1
6

Sample Output

Yes

#include <bits/stdc++.h>

using namespace std;

bool is_p(int x){
    for(int i=2;i*i<=x;i++){
        if(x%i==0){
            return false;
        }
    }
    return true;
}

void solve(){
    int n;
    scanf("%d",&n);
    while(n--){
        int a;
        scanf("%d",&a);
        bool f=0;
        for(int i=2;i*i<=a;i++){
            if(a%i==0&&is_p(i)&&is_p(a/i)){
                f=1;
                break;
            }
        }
        printf("%s\n",f?"Yes":"No");
    }

}

int main(){
    solve();
    return 0;
}