uva 573 

 1 #include<stdio.h>
 2 
 3 int main()
 4 {
 5     float  day , ih , dc,H ,U , D, F,sliding;
 6     while(scanf("%f%f%f%f",&H,&U,&D,&F) && H){
 7         day = 1 ;
 8         ih  = 0 ;
 9         dc = U;
10         sliding = U * F /100 ;
11     while(1)
12     {
13        ih += dc ;
14        if(ih>H){printf("success on day %.0f\n",day) ; break;}
15        ih -= D ;
16        if(ih< 0){printf("failure on day %.0f\n",day) ; break;}
17        dc-= sliding ;
18        if( dc < 0 ) dc = 0 ;
19        day++;
20     }
21     }
22     return 0 ;
23 }

 

posted @ 2013-11-18 22:16  shaughn  阅读(128)  评论(0)  编辑  收藏  举报