zoj1710

#include <iostream>using namespace std;int main(){    double fHeightOfWell, fUpDistance, fDownDistance, fFatigueFactor;    int nDay;    while (1)    {        cin >> fHeightOfWell >> fUpDistance >> fDownDistance >> fFatigueFactor;        if (fHeightOfWell == 0)        {            break;        }        else        {            double nFatigueDistance = (double)fUpDistance * fFatigueFactor / 100;                       double nHeightFromBottom = 0;            nDay = 0;            do            {                nDay++;                nHeightFromBottom += fUpDistance;                               if (nHeightFromBottom > fHeightOfWell)                {                    break;                }                else                {                    nHeightFromBottom -= fDownDistance;                    fUpDistance -= nFatigueDistance;                    if (fUpDistance < 0)                    {                        fUpDistance = 0;                    }                }            } while (nHeightFromBottom >= 0);            if (nHeightFromBottom > 0)            {                cout << "success on day " << nDay << endl;            }            else            {                cout << "failure on day " << nDay << endl;            }        }    }    return 0;}