#include <stdio.h>
#include <math.h>
int main() {
printf("%f\n", floor(0.60));
printf("%f\n", floor(0.40));
printf("%f\n", floor(5));
printf("%f\n", floor(5.1));
printf("%f\n", floor(-5.1));
printf("%f\n", floor(-5.9));
return 0;
}