#include<iostream> #include<cstdio> //scanf()\printf() #include<cstring> #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int sum=100000; for(int i=1;;i++){ if(sum>50000) sum-=sum*0.05; else sum-=5000; if(sum<5000){ cout<<i; break; } } return 0; }