Estimation of population carrying capacity of Olympiad Earth in primary schools

Water problem, the direct column equation then solves can. Assuming a growth rate of one Earth's resources V, then the largest population is the rate at which these populations consume resources at a speed of V is the number. So: A*v-a*x=b*v-b*y can solve the answer.

#include <iostream>#include<cstdio>usingnamespace  std; Double  int  main () {    scanf ("%lf%lf%lf%lf", &x,&a ,&y,&b);    printf ("%.2f", (x*a-y*b)/(A-b));}

Estimation of population carrying capacity of Olympiad Earth in primary schools