#include <random>
#include <iostream>
using namespace std;
 
int main(void) {
    // Solver solve;
 
    mt19937 mteng;
    uniform_real_distribution<double> uniRealD;
 
    double randomNum;
 
    for (int index = 0; index < 10; index++){
        randomNum = uniRealD(mteng);
	std::cout << randomNum << '\n';
 
        if(randomNum<0.5)
            cout<<index<<" no. random number is: "<<randomNum<<endl;
        else
            cout<<"number generate is not in range"<<endl;
    }
 
    return 0;
}
 

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