zoj1494

简单题

#include <iostream>using namespace std;int main(){    while(1)    {        int num,u,d,dist = 0,time = 0;        cin >> num >> u >> d;        if(num == 0)            break;        while(1)        {            time ++;            dist += u;            if(dist >= num)                break;            time ++;            dist -= d;        }        cout << time << endl;    }    return 0;}