hdu 1302(简单模拟题）

1 #define _CRT_SECURE_NO_WARNINGS
2 #include<iostream>
3 #include<cstdio>
4 #include<cmath>
5 using namespace std;
6
7 int main(){
8     double h,u,d,f;
9     while(~scanf("%lf",&h)&&h){
10         scanf("%lf%lf%lf",&u,&d,&f);
11         int day=0;
12         bool flag=true;
13         double dist=0,s=u*f/100;
14         while(1){
15             day++;
16             dist+=u;
17             if(dist>h)break;
18             dist-=d;
19             if(dist<0){flag=false;break;};
20             u-=s;
21             if(u<0)u=0;
22         }
23         if(flag){
24             printf("success on day %d\n",day);
25         }else
26             printf("failure on day %d\n",day);
27     }
28     return 0;
29 }