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  1. #include <stdio.h>
  2.  
  3. int main()
  4. {
  5.     int t=0;
  6.     float a , b;
  7.     float aChanges, bChanges;
  8.     scanf("%f %f\n%f %f",&a,&b,&aChanges,&bChanges);
  9.     if (b>a && bChanges>aChanges)
  10.     {
  11.         printf("-1");
  12.     }
  13.     else
  14.     {
  15.         while(a*aChanges<b*bChanges)
  16.         {
  17.             a=a*aChanges;
  18.             b=b*bChanges;
  19.         t=t+1;
  20.         }
  21.         printf("%d",t);
  22.     }
  23.     return 0;
  24. }
  25.  
Success #stdin #stdout 0s 5268KB
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https://ideone.com/RMmPn5
language:
C (gcc 8.3)
created:
12 hours ago
visibility:
public

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