import java.util.Scanner;
 
class comparacaoPopulacao { //Início da Classe
	public static void main(String[] args) { //Início da Função main
        double paisA = 90000000; //declaração de variáveis        
        double paisB = 200000000; //declaração de variáveis       
        int calcularAnos = 0; //declaração de variáveis
        while(paisA < paisB){ 
            paisA += ((paisA * 3.0) / 100.0); //calculando habitantes com taxa anual de 3%
            paisB += ((paisB * 1.5) / 100.0); // calculando habitantes com taxa anual de 1,5%
            calcularAnos++; //contador de anos para o país A se igualar ao país B
        }
        System.out.println("São necessários " + calcularAnos + " anos"); //Imprimindo resultado
    } //Fim da função main
} //Fim da classe
 
 
 
 

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