fishTank

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int length, width, height;
    double percent, result, volume;
    scanf("%d %d %d %lf", &length, &width, &height, &percent);

    volume = length * width * height * 0.001;
    result = volume * (1 - percent * 0.01);
    printf("%.3f", result);

    return 0;
}