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  1. #include <cstdio>
  2.  
  3. int main()
  4. {
  5.     double p = 0; scanf( "%lf", &p );
  6.     double k = 0; scanf( "%lf", &k ); k /= 100; //перевод процентов в вид для расчетов
  7.     double t = 0; scanf( "%lf", &t );
  8.     int years = 0;
  9.  
  10.     if ( (p*(1 + k)-t) < p ) //если прирост не компенсирует вырубку
  11.     {
  12.          while( p > 0 )
  13.         {
  14.             p = p * ( 1 + k ) - t;
  15.             years++;
  16.         }
  17.     printf( "%d", years );
  18.     }
  19.  
  20.     else 
  21.      {
  22.      	printf("Никогда: система гармонична. ");
  23.      }
  24.     return 0;
  25. }
Success #stdin #stdout 0s 3348KB
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stdin
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Standard input is empty
stdout
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Никогда: система гармонична.
https://ideone.com/JYT0zx
Ю3.44
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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