【CF】 A. New Year Candles

Through the tunnel

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The question and A. Vasya and Socks Very much alike , Almost the same idea .

A. Vasya and Socks

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e6 + 10;
int a,b;
int main(){
    
	cin >> a >> b;
	int ans = a + a / b;
	int u = a / b;
	int r = a % b;
	while(u != 0){
    
		if(r != 0){
    
			u += r;
		}
		r = u % b;
		u /= b;
		ans += u;
	}
	cout << ans << endl;
	
	return 0;
}