Brush questions - Luogu -p1150 Peter's smoke

P1150 Peter The smoke of -C Language

1、 subject

2、 The problem solving process

(1) for the first time while Insufficient conditions in the loop , Should be surplus >=k
result ：

Code ：

// Luogu  P1150 Peter The smoke of 
#include <stdio.h>
int main() {
    
	int n;//Peter The original number of cigarettes 
	int k;//k(k>1) A cigarette butt can be exchanged for a new cigarette 
	int sum=0;//Peter The number of cigarettes you can smoke 
	int exchange;// The number that can be exchanged 
	int surplus;// The number of cigarettes remaining that have not been exchanged 
	//int i = 1;
	scanf_s("%d %d", &n, &k);
	sum = n;// Original smoke number 
	exchange = n / k;// The number of cigarettes that can be exchanged 
	sum = sum + exchange;
	surplus = n - exchange * k+ exchange;// Number of cigarettes remaining 
	while (surplus > k) {
    
		exchange = surplus / k;// Number of cigarettes exchanged 
		sum = sum + exchange;
		surplus = surplus - exchange * k + exchange;
		//printf(" Implemented section %d Time \n", i);
		//i++;
	}
	printf("%d", sum);

	return 0;
}

(2) The second time
result ：

Code ：

// Luogu  P1150 Peter The smoke of 
#include <stdio.h>
int main() {
    
	int n;//Peter The original number of cigarettes 
	int k;//k(k>1) A cigarette butt can be exchanged for a new cigarette 
	int sum=0;//Peter The number of cigarettes you can smoke 
	int exchange;// The number that can be exchanged 
	int surplus;// The number of cigarettes remaining that have not been exchanged 
	//int i = 1;
	scanf("%d %d", &n, &k);
	sum = n;// Original smoke number 
	exchange = n / k;// The number of cigarettes that can be exchanged 
	sum = sum + exchange;
	surplus = n - exchange * k+ exchange;// Number of cigarettes remaining 
	while (surplus >= k) {
    
		exchange = surplus / k;// Number of cigarettes exchanged 
		sum = sum + exchange;
		surplus = surplus - exchange * k + exchange;
		//printf(" Implemented section %d Time \n", i);
		//i++;
	}
	printf("%d", sum);
	return 0;
}