#include <stdio.h>

int main() {
    double num1=0,num2=0;
    scanf("%lf %lf", &num1, &num2);
    printf("%f\n",num1+num2);
    printf("%f\n",num1-num2);
    printf("%f\n",num1*num2);
    printf("%f",num1/num2);
    return 0;
}